WO2018126150A1

WO2018126150A1 - Polymer dental dam clamp and related assemblies and methods

Info

Publication number: WO2018126150A1
Application number: PCT/US2017/068979
Authority: WO
Inventors: Sigal Jacobson Shagan; Pedro URRUTIA FABIAN
Original assignee: Novo Dent LLC
Current assignee: Novo Dent LLC
Priority date: 2016-12-29
Filing date: 2017-12-29
Publication date: 2018-07-05
Anticipated expiration: 2019-06-29

Abstract

A device for retaining a dental dam includes a flexible clamp including a central portion for receiving at least one tooth of a subject. Dental dam assemblies and methods for forming and using the clamps in dental dam assemblies are also disclosed.

Description

POLYMER DENTAL DAM CLAMP AND

RELATED ASSEMBLIES AND METHODS

PRIORITY CLAIM

This application claims the benefit of the filing date of United States Provisional

Patent Application Serial No. 62/440,189, filed December 29, 2016, for "POLYMER DENTAL DAM CLAMP AND RELATED ASSEMBLIES AND METHODS," the disclosure of which is hereby incorporated herein in its entirety by this reference. TECHNICAL FIELD

The disclosure relates generally to the field of dental devices and related assemblies and methods. In particular, the disclosure relates to a flexible retaining device that couples with a portion of a subject's mouth (e.g., teeth), such as a polymer dental clamp, for retaining a dental dam, and related assemblies and methods.

BACKGROUND

Dental dams are employed in many dental procedures. The rubber dental dam is known in the art and has been utilized in dentistry since 1864. It comprises a thin, flexible piece of rubber employed to isolate one or more teeth during various dental procedures. The purpose for using the rubber dental dam is to provide an optimum working environment for the dentist while protecting the patient during operative procedures.

The dam minimizes or eliminates saliva from the field of operation and may mildly retract the soft tissue around the tooth. Most procedures in operative dentistry are performed more efficiently by employing a dental dam, as it assures a dry working area during all steps of the procedure. Another advantage to operating in a dry field is that dental restorative materials do not develop their full properties in a wet operating environment. The rubber dam then permits a dentist to obtain the expected physical properties of materials because of the dry field.

The dental dam also protects the patient and the practitioner. The rubber dental dam protects the patient from the possibility of aspirating or swallowing debris. In addition, the dam will permit prompt recovery of any instruments dropped during the operative procedure. The dental dam also affords the practitioner protection from any infectious disease that may be present in the subject's mouth. To employ a dental dam, the dam may first be placed around and attached to a YOUNG™ holder, which is a frame for the dental dam. Holes are subsequently punched in the dam such that each hole corresponds to a tooth for placement thereover. The dental dam is then lubricated to facilitate the passing of the dam through the tooth/crown contact points. Alternatively, the holes may be punched first, the dam is installed over the teeth and is then stretched over the frame. In either order, the dental dam then must be stabilized using a retainer.

A metal retainer clamp is the most common form of stabilizing a dental dam and consists of four prongs and two jaws connected by a bow. The problem with utilizing the metal retainer clamp is that the clamp is not ideally configured for a specific tooth. Due to the variation in teeth across a single mouth, from sharp, thin incisors to broad, wide molars, many types of teeth are encountered. Further, every mouth has different sizes and shapes of teeth. As a result, with specific clamps designed for specific teeth, many types of clamps need to be stocked by the practitioner.

Another disadvantage in employing the metal retainer clamp is that the four prongs must contact a tooth, if they do not, the clamp may need to be modified, a process requiring still more time. Furthermore, even with four-point contact, the retainer can injure the gingiva (i.e. , gums), as well as the tooth, resulting in post-operative soreness. Accurate placement of the clamps is difficult to achieve and, as a result, the patient may need to be anesthetized allowing for more comfortable retainer placement on the anchor tooth. The clamp may also create sealing problems on the anchor tooth, which then creates leakage problems of wetness into the work area. Further disadvantages include reprocessing costs associated with utilizing the metal retainer clamps in multiple proceeds, such as the required sterilization of the clamps along with reprocessing and sterilization of any dental tools, such as dental clamp forceps, that are utilized to place the metal retainer clamps (e.g., dental clamp forceps).

Alternatively, practitioners have used elastomeric cords for retaining dental dams. One such cord is disclosed in U.S. Patent 5,104,317, the disclosure of which is hereby incorporated herein in its entirety by this reference. To retain a dental dam with an elastomeric cord, the dental dam is first placed over the subject's teeth as described above. Next, the practitioner elongates a section of elastomeric cord thereby reducing the cross- sectional area of one section of the cord. The practitioner then interposes a portion of the elongated section between at least two adjacent teeth and over the dam. Once the cord is positioned, the practitioner allows the cord to expand to its original cross-sectional area, thereby prohibiting the removal of the dam from the teeth.

Although the elastomeric cords have proven useful once they are positioned, problems have arisen when the practitioner is installing and removing the elastomeric cords. One problem has been that the elastomeric cords have been difficult to pick up and grip easily. The difficulty in gripping leads to difficulty when the practitioner must elongate the cord. Another problem is that the installation and removal of the cords requires at least two hands. In view of the limiting working area, the two-handed operation is a disadvantage. Furthermore, because teeth tend to have rounded corners, the elastomeric cord only provides a small wedge where the space between the adjacent teeth is the narrowest.

DISCLOSURE

Described are clamping devices for use in dental procedures. For example, such clamping devices may be utilized for retaining a dental device, such as a flexible clamp (e.g., a polymer clamp) for retaining one or more portions of a dental dam. The flexible clamps may be provided in multiple sizes in order to be utilized on different sizes (e.g., adult, child, etc.) and types of teeth (e.g., molars, anterior teeth, etc.).

In some embodiments, the device for retaining a dental dam may comprise a flexible clamp circumscribing a central aperture for receiving at least one tooth of a subject in the central aperture.

In some embodiments, the clamp may include a central portion including one or more thin bands and/or one or more bands (e.g., reinforced bands) defining a central aperture. The clamp may also include one or more wings attached to the central portion proximate the one or more reinforced bands, where one or more of the one or more reinforced bands or the one or more wings are configured to provide a surface for retaining the dental dam.

In some embodiments, the clamp may include a raised portion extending linearly across a midsection of the one or more wings transverse to a longitudinal axis of the clamp. The clamp may also include a gripping portion located on the one or more wings between the raised portion of the one or more wings and the central portion of the clamp. In some embodiments, the flexible clamp (e.g., polymer clamp) may optionally include one or more reinforcement structures (wires, springs, ribbons, combinations thereof, etc.) that are utilized to reinforce the structure of the flexible clamp.

Also disclosed is a dental dam assembly including a dental dam and a clamp. The clamp may comprise a polymer material ad may be configured to retain the dental dam. In some embodiments, the clamp may include a central portion including one or more thin bands and/or one or more bands defining a central aperture. The clamp may also include one or more wings attached to the central portion proximate the one or more bands, the one or more wings configured to provide a surface to retain the dental dam relative to a tooth.

In some embodiments, the dental dam assembly may include a dental dam and a flexible clamp circumscribing a central aperture and for receiving at least one tooth of a subject in the central aperture to retain the dental dam relative to the at least one tooth.

In some embodiments, the disclosed dental clamps may be utilized with other dental devices and/or procedures. For example, a dental clamp itself, or in conjunction with other devices, may be utilized as dental matrices in a restoration process.

In some embodiments, a dental clamp may include a feature and/or mechanism that interacts with an adjacent structure (e.g., another portion of the clamp) to secure one or more of the wings in a displaced position. The displaced position may enhance the ability of the user to thread a portion of the clamp (e.g., one or more wings) through an aperture in a dental dam. Such a displaced position may be an upward position extending in a direction transverse (e.g., perpendicular) to a major axis of the clamp (e.g., where one or both wings extend from and substantially over the central portion).

In some embodiments, methods of retaining a dental dam include grasping at least one wing of a clamp; applying tension along an axis of the clamp to elongate at least one band proximate an aperture of a central portion of the clamp; centering the aperture of the central portion over an exposed tooth; securing a portion of the at least one band in an intermediate space between adjacent teeth by applying pressure to position the at least one band proximate the gingiva; releasing the applied tension to enable the at least one band to at least partially surround the exposed tooth; and retaining the dental dam proximate the exposed tooth with the at least one wing.

Further disclosed are methods for retaining a dental dam with the clamp and methods of forming the dental dam clamp according to the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts a top view of a clamp for retaining a dental dam in accordance with an embodiment of the disclosure.

FIG. 2 depicts a front plan view of the clamp of FIG. 1.

FIG. 3 depicts an end view of the clamp of FIG. 1.

FIG. 4 depicts a top view of the clamp in use in a dental dam assembly in accordance with an embodiment of the disclosure.

FIG. 5 depicts an isometric view of a clamp for retaining a dental dam in accordance with an embodiment of the disclosure.

FIG. 6 depicts a front plan view of the clamp of FIG. 5.

FIG. 7 depicts an isometric view of a clamp for retaining a dental dam in accordance with an embodiment of the disclosure.

FIG. 8 depicts another isometric view of the clamp of FIG. 5. MODE(S) FOR CARRYING OUT THE INVENTION

Illustrations presented herein are not necessarily meant to be actual views of any particular device, assembly, system, method, or components thereof, but are merely idealized representations, which are employed to describe embodiments of the disclosure. Additionally, elements common between figures may retain the same numerical designation.

As used herein, the term "substantially," in reference to a given parameter, means and includes to a degree that one skilled in the art would understand that the given parameter, property, or condition is met with a small degree of variance, such as within acceptable manufacturing tolerances. For example, a parameter that is substantially met may be at least about 90% met, at least about 95% met, or even at least about 99% met.

FIG. 1 depicts a top view of a clamp for use in a dental procedure, such as, for example, an at least partially flexible clamp 100 for retaining a dental dam. In some embodiments, the clamp 100 may at least partially or entirely comprise a polymer (e.g., rubbers, elastomers, silicon elastomers or rubbers, thermoplastic elastomers, plastics, combinations thereof etc.) dental dam clamp for retaining a dental dam (e.g., rubber dental dam) during a dental procedure. In some embodiments, the clamp 100 may be utilized to assist in temporarily retaining the dental dam in a desired position in order to isolate one or more teeth during a dental procedure. The clamp 100 comprises a central portion 102 (e.g. , a substantially elliptical, circular, or oval-shaped structure), which may comprise one or more thin bands 118 (e.g. , bands having a relatively smaller thickness taken in a radial or lateral direction) and one or more thicker or reinforced bands 120 (e.g., bands having a relatively larger thickness taken in a radial or lateral direction). For example, two opposing thin bands 118 and two opposing reinforced bands 120 may define a circumference of the substantially circular or oval-shaped structure of the central portion 102. In some embodiments, the thin bands 118 and/or reinforced bands 120 may be one continuous structure extending about (e.g., surrounding) a central aperture 108 with relatively narrower and thicker portions as depicted in FIG. 1.

In some embodiments, the central portion 102 of the clamp 100 may include a cover portion (not shown) extending over the central aperture 108. Such a cover portion may act to cover (e.g., shield, isolate) an upper portion of the subject's tooth or teeth that is received in the central aperture 108.

In some embodiments, the clamp 100, including the thin bands 118 and the reinforced bands 120 of the central portion 102, may be one continuous structure of a single material (e.g., polymer material). In other embodiments, the clamp 100 may be formed of different sections or materials that have been affixed (e.g., using an adhesive, etc.) to one another in order to form the clamp 100.

In some embodiments, one or more portions of the clamp 100 may comprise a material that is at least partially transparent in an imaging process. For example, one or more portions of the clamp 100 may comprise a radiolucent material that is at least partially transparent (e.g., substantially entirely transparent) in images (e.g., and/or will not interfere with other structures being imaged) taken by devices, such as, for example, cone beam computed tomography (CBCT) devices, X-rays devices, etc.

In some embodiments, the clamp 100 may include metal portions (e.g., wire, spring, etc.) configured to provide additional support to the polymer material in high strain areas of the clamp 100, for example, in the reinforced bands 120. In other embodiments, each portion of the clamp 100 may be constructed exclusively of non-metallic materials (e.g., rubber, plastic, silicone, polyimide, etc.). In addition, an increased thickness and/or strength of material in the reinforced bands 120 enables a relatively higher tensile strength relative to the thin bands 118, while still retaining an at least partial ability to stretch (e.g., elastically deform) around a subject's tooth or teeth. Such an effect enables the clamp 100 to maintain integrity without significantly tearing or damaging the clamp 100 while allowing the thin bands 118 to stretch (e.g., elastically deform), thus minimizing a cross- sectional area of the thin bands 118 to enable placement thereof between adjoining teeth. In some embodiments, the clamp 100 may include a single body (e.g., a molded article) consisting essentially of the polymer material. In some embodiments, the clamp 100 may comprise a latex-free material, such as, for example, a radiopaque silicone medical grade material. Additional fillers may also be present in the polymer material. The clamp 100 may not be rigid and may be at least partially moldable, depending on the modulus of elasticity (i.e., stiffness) of the material. The thin bands 118 and/or the reinforced bands 120 may include a band of silicone or elastomer. Selection of specific materials may depend on desired physical properties including, for example, modulus of elasticity, compressive strength, and/or flexural strength. It may be appreciated that any suitable material may be used based on individual requirements.

While FIG. 1 depicts the clamp 100 including the central portion 102 having a generally oval shape with two opposing thin bands 118 (shown at the at top and bottom sides of the central portion 102) and with two opposing reinforced bands 120 (shown at the left and right sides of the central portion 102), in other embodiments, the central portion 102 may be formed as any suitable size and shape, such as, for example, a C-shape or an arc-shape. By way of non-limiting example, a single reinforced band 120 may extend around a majority of the central portion 102, while a single thin band 118 may extend around a minor section of the central portion 102, thereby providing a C-shape.

The central portion 102 of the clamp 100 may comprise the central aperture 108 defined by inner portions of the thin bands 118 and the reinforced bands 120. The central aperture 108 may be symmetric with respect to a longitudinal axis L of the clamp 100 and may be symmetric with respect to an axis transverse to the longitudinal axis L. However, the central aperture 108 may, or may not, be circular or oval in shape. Rather, the central aperture 108 may have a non-uniform shape defined by the proximate locations and thicknesses of the surrounding thin bands 118 and the reinforced bands 120. For example, as shown in the embodiment of FIG. 1, the thin bands 118 have a relatively smaller cross- sectional area than the cross-sectional area of the reinforced bands 120. The cross- sectional area of the thin bands 118 may approximate a cross-sectional area of dental floss. In addition, each of the thin bands 118 and the reinforced bands 120 may have a similar height to one another in a third direction (i.e., out of the page, see, e.g., FIG. 2) providing a coextensive surface with respect to one another. In other embodiments, the relative heights of the thin bands 118 and the reinforced bands 120 may be different and may not provide a coextensive surface.

The central portion 102 may include a web portion 106 (e.g., an inner or innermost band) within at least a portion of an interior area of the central aperture 108. The web portion 106 may have a decreased thickness taken in a direction transverse to the longitudinal axis L (e.g., as compared to one or more adjacent portions of the clamp 100, such as, the bands 118, 120) and may easily conform (e.g., elastically deform) around a subject tooth. The central aperture 108 may include an elongated shape (e.g., a slot) having an enlarged central portion 112 and two relatively narrow side portions 114 as defined by the web portion 106. In some embodiments, the enlarged central portion 112 may be concave along a centerline of the central aperture 108. As depicted in FIG. 1, the web portion 106 may extend from and/or be recessed within the inner portions of the thin bands 118 and the reinforced bands 120. In addition, the web portion 106 may be recessed from the upper surface of the central portion 102 (e.g., recessed into the page from the perspective of FIG. 1). In some embodiments, sections of the web portion 106 proximate the thin bands 118 may be relatively narrower than sections of the web portion 106 proximate the reinforced bands 120. The web portion 106 may include a thin, flexible portion of the polymer material of the clamp 100. As depicted, the central aperture 108 may be configured to receive a tooth therethrough, while the web portion 106 hugs the tooth (e.g., restricts around the tooth), providing additional surface area of polymer material to surround the tooth.

The clamp 100 may also comprise one or more wings 104 (e.g., two opposing wings) attached to and generally extending away from the central portion 102 (e.g., in a direction along the longitudinal axis L). The wings 104 may be located proximate the one or more reinforced bands 120. The wings 104 (e.g., handles) may be polygonal in shape where the outer edges of the wings 104 may flare outward and then back inward meeting, for example, at a point. In some embodiments, the wings 104 may be one continuous structure of a single material (e.g., polymer material) with the clamp 100 and the central portion 102, including the thin bands 118 and the reinforced bands 120. In other embodiments, the wings 104 may be formed of different sections or materials and affixed (e.g., using an adhesive, etc.) to the central portion 102 of the clamp 100. In addition, the wings 104 may have a similar height with respect to the central portion 102 in the third direction (i.e., out of the page) providing a coextensive surface with respect to the central portion 102. In other embodiments, the relative height of the wings 104 may not provide a coextensive surface with respect to the central portion 102, as shown in the embodiment of FIG. 2.

As depicted in FIG. 1, the wings 104 may be sized and shaped to be substantially symmetrical with respect to the central portion 102 or, in other embodiments, the wings 104 may be sized and shaped to be asymmetrical. Each of the wings 104 may include a raised portion 122 extending linearly (e.g. , transverse the longitudinal axis L) across a midsection thereof. The raised portion 122 may be located near an enlarged midsection of the wings 104, as depicted in FIG. 1. In some embodiments, the raised portion 122 may be formed to include an additional thickness relative to a thickness of the wings 104. In other embodiments, the raised portion 122 may be of a similar thickness as the wings 104, but may include an area having a heightened feature (e.g., joint, bend, etc.) effectively providing an angle relative to a major plane of the wings 104, as shown in FIG. 2. Forming such an angle in the wings 104 may facilitate placement of the clamp 100 and retention of an associated device (e.g., a dental dam).

The wings 104 may also include a gripping portion 124 located approximately between the raised portion 122 of the wings 104 and the central portion 102 of the clamp 100. The gripping portion 124 may provide an additional contour providing strength to the wings 104, along with providing increased grip strength while applying outward tension (i.e., stretching) during application of the clamp 100. In some embodiments, the gripping portion 124 may be configured to express a logo or other such partem unique to the clamp 100. For example, the gripping portion 124 as depicted in FIG. 1 corresponds to a product name (i.e., "NC" representing the product name "Novoclamp"). Additional shapes and configurations of the wings 104 are contemplated. While the wings 104 are depicted as being two opposing wings 104 located proximate two reinforced bands 120, the wings 104 may also include one or more non-opposing wings for other embodiments of the central portion 102 (e.g., C-shaped or arc-shaped configurations). However, it is to be appreciated that having two opposing wings 104 facilitates stretching of the clamp 100 during application. The wings 104 may also include one or more holes 126 in an outer end thereof remote from the central portion 102. In some embodiments, the one or more holes 126 may be utilized to retrieve and/or remove the clamp 100. For example, another dental device (e.g., floss) may be passed through the one or more holes 126 in order to secure and/or retrieve the clamp 100 in the event it may become dislodged or removed from the subject's tooth. In some embodiments, the one or more holes 126 may be located and configured to enable retention of a dental instrument in order to facilitate stretching the wings 104 and to ensure accurate placement of the clamp 100.

In some embodiments, a length (e.g., along the longitudinal axis L) of the clamp 100, including the central portion 102 and the wings 104, may be between about 4 mm and about 10 mm. In some embodiments, the length of the clamp 100 may be between about 5 mm and about 6 mm. In addition, a width (i.e., transverse to the longitudinal axis L) of the clamp 100, may be between about 4 mm and about 10 mm. In some

embodiments, the width of the clamp 100 may be between about 8 mm and about 10 mm.

FIG. 2 depicts a front plan view of the clamp 100 of FIG. 1 as viewed from a side surface thereof. As shown in FIG. 2, the clamp 100 may include a non-planar aspect with regard to the major surface of the clamp 100. As depicted, the wings 104 are configured to extend away from the central portion 102. In some embodiments, the wings 104 may be configured to be flush with and provide a coextensive surface with respect to the central portion 102. In other embodiments, the raised portion 122 may extend along a midsection of the wings 104. In other words, portions of the midsection of the wings 104 may slightly flair upward with respect to the major plane of the wings 104. In other embodiments, the raised portion 122 may include an additional thickness of material, as discussed above. In addition, the thickness of a sidewall 128 of the wings 104 may be the same as, or different than, the thickness of the central portion 102. For example, the thickness of the wings 104 may be greater than, or in some embodiments, less than, the thickness of the central portion 102 depending on strength of material requirements in specific locations. It is to be understood that any shape or size of wings 104 may be contemplated.

FIG. 3 depicts an end view of the clamp 100 of FIG. 1 as viewed from a lateral end surface thereof containing the central portion 102 and the wings 104. As depicted in

FIG. 3, the wings 104 may also include an angle relative to the longitudinal axis L of the clamp 100. In other words, the wings 104 may include a slight bend or joint as seen from the end view of the clamp 100. In addition, the gripping portion 124 may be configured to include an addition thickness relative the major plane of the wings 104, as shown in FIGS. 2 and 3.

FIG. 4 depicts a top view of the clamp 100 in use in a dental dam assembly 130. The dental dam assembly 130 including the clamp 100 may be utilized to provide a support structure for retaining a dental dam proximate to an exposed tooth 138 (e.g., a molar). The dental dam assembly 130 may include a dental dam 132 (e.g., a rubber or latex dental dam) including a dental dam frame 134. The dental dam 132 may include one or more apertures 136 configured to expose and isolate one or more teeth during a dental procedure. As shown in FIG. 4, the exposed tooth 138 may extend through the one or more apertures 136 in the dental dam 132. In order to facilitate retention of the dental dam 132 using the clamp 100, a support structure with sufficient strength of material is required to retain the dental dam 132 proximate the exposed tooth 138 without damaging the exposed tooth 138 and/or surrounding tissue.

While conventional metal retention clamps also retain the dental dam 132 proximate the exposed tooth 138, the metal clamps often require multiple attachment points thereto. In addition, metal retention clamps tend to be uncomfortable to the patient, often requiring the need to anaesthetize the gums proximate the clamps. However, embodiments of the instant disclosure may enable ease of use by surrounding the exposed tooth 138 with the clamp 100 constructed of a polymer material in combination with the unique physical characteristics (i.e., shape and size) as disclosed herein. Such configurations enable the clamp 100 to provide suitable support structure to retain the dental dam 132 without damaging teeth and/or crowns along with surrounding tissue. In addition, use of the clamp 100 including the polymer material enables placement without tearing or otherwise damaging the dental dam 132. Also, as a result of the position of the clamp, which is closer to the gum, without any metal rim interfering, the dentist is enabled to preform an occlusal bite check while the dam is in place without any interference from the metal rim or other portion of the clamp.

In addition, metal retention clamps may require help from an assistant and may require placement with forceps. In contrast, the clamp 100 may be positioned without requiring assistance (e.g., the assistance of another practitioner, such as an assistant).

Further, the one or more holes 126 of the clamp 100 may be located and configured to enable retention of a dental instrument in order to facilitate stretching the wings 104 and to ensure accurate placement of the clamp 100. In this manner, the clamp 100 may permit the dental dam 132 to be safely retained within the mouth of the subject during the procedure. The clamp 100 may be available in more than one size, for example, a smaller size for incisors and/or canines (i.e., front teeth) or pediatric molars and a larger size for molar and premolar teeth, providing a sensible alternative to multiple size options of the metal retainer clamps. Another advantage over metal retention clamps includes the clamp 100 using relatively inexpensive materials and manufacturing processes, enabling an affordable single use (i.e., disposable) article. Further, the clamp 100 involves an easy learning curve as the clamp 100 is easily and quickly positioned, thereby saving time during a procedure.

Conventional devices for shielding teeth may also include a DMG MINIDAM® commercially available from DMG America, of Englewood, NJ. However, the DMG MiniDam itself constitutes a smaller version of a dental dam rather than a clamp to hold a traditional dental dam in place. Therefore, the DMG MiniDam may not protect a subject from inhalation of materials and may not completely isolate teeth from the oral environment. The DMG MiniDam is disclosed in International Publication No.

WO 2015/124785, the disclosure of which is hereby incorporated herein in its entirety by this reference. Another device for retaining a dental dam is disclosed in International Publication No. WO 96/39984, the disclosure of which is hereby incorporated herein in its entirety by this reference.

With continued reference to FIG. 4, the aperture 136 of the dental dam 132 may be aligned over an occlusal surface (i.e., bite side) of the exposed tooth 138. In some embodiments, the dental dam 132 may be attached to the dental dam frame 134 for stability in handling and to add tension to the fabric of the dental dam 132. In some embodiments, application of the clamp 100 includes positioning the clamp 100 (e.g., after positioning the dental dam 132) by grasping the wings 104 of the clamp 100 and applying tension in a tensioning direction along the longitudinal axis L to elongate the thin bands 118 proximate the central aperture 108 of the clamp 100. The central aperture 108 of the clamp 100 may then be centered over the exposed tooth 138. The thin bands 118 may be secured in an intermediate space between adjacent teeth by applying pressure in a downward direction in order to position the thin bands 118 proximate the base of the exposed tooth 138 and proximate the gingiva (i.e., gums). In other words, stretching the clamp 100 will enable the thin bands 118 to fully extend in order to elongate the thin bands 118 reducing the cross- sectional area thereof to any suitable size (e.g., longer, thinner, etc.) relative to the resting position of the thin bands 118 in order to facilitate insertion between adjacent teeth.

Once positioned, the applied tension of the thin bands 118 may be released by releasing the wings 104. The thin bands 118 may then return to their resting position, filling intermediate spaces around the exposed tooth 138. As depicted, surface areas of the wings 104 are configured to retain the dental dam 132 proximate the exposed tooth 138 while the thin bands 118 remain located between interproximal surface of the exposed tooth 138 and adjacent teeth during the dental procedure. Stated in another way, the clamp 100 may provide structural support to retain the dental dam 132 in place during the procedure by allowing the wings 104 to engage the fabric of the dental dam 132.

Following the procedure, the clamp 100 may be released from the dental dam 132 by grasping the wings 104 and applying tension along the tensioning direction of the longitudinal axis L in order to re-stretch the thin bands 118 to facilitate removal thereof.

Once the clamp 100 has been removed, the dental dam 132 may also be removed.

In other embodiments, the clamp 100 may be placed prior to placement of the dental dam 132. For example, the clamp 100 may be placed in a similar manner to that discussed above. Thereafter, the dental dam 132 may be placed by moving (e.g., bending, rotating) the wings 104 and passing (e.g., threading) the wings 104 though the

aperture 136. The wings 104 may be released and returned back in their original configuration in order to secure the dental dam 132.

In some embodiments, the clamp 100 may be utilized to at least partially prevent cement from entering the gingival tissue of a subject by separating excess cement from the tissue of the subject. Such a feature may be utilized while cementing a crown on an implant abutment or prepped tooth and/or as an aid on the cementation of onlays, inlays, or veneers, etc.

In some embodiments, the clamp 100 may be utilized to at least partially prevent gingival crevicular fluid (GCF) and/or blood from contaminating and interfering during cementation, bonding a restoration at the cervical part of the tooth or crown.

FIG. 5 depicts an isometric view of a clamp for use in a dental procedure, such as, for example, an at least partially flexible clamp 200 for retaining a dental dam that may be at least partially similar to the clamp 100 discussed above in relation to FIGS. 1 through 4. FIG. 6 depicts a front plan view of the clamp of FIG. 5. As shown in FIGS. 5 and 6, the clamp 200 comprises a central portion 202. The clamp 200 may also comprise one or more wings 204 (e.g., two opposing wings) attached to and generally extending away from the central portion 202.

The wings 204 may include an inner portion 220, a raised portion 222, and an end portion 224 (e.g., gripping portion) extending outward from the central portion 202. The raised portion 222 may be located near an enlarged midsection of the wings 204 and the end portion 224 may extend (e.g., downward) from the raised portion 222 and inner portion 220 at an angle. For example, and as depicted, the end portion 224 may extend downward at a relatively greater angle than the clamp 100 (FIG. 1) (e.g., 45 degrees or more, 50 degrees or more, etc.) from a midline (e.g., similar to axis L (FIG. 1)) of the clamp 200. One or more of the end portions 224 may include a terminal end 228 having a reduced cross section. For example, the end portion 224 may taper to the terminal end 228, which may end in the form of a point (e.g., a rounded point) that extends substantially in the same angled direction as the end portion 224 from the raised portion 222.

As depicted, the wings 204 may each include a respective hole 226 in an outer end thereof remote from the central portion 202 (e.g., proximate the raised portion 222). As above, one or more of the holes 226 may be utilized with another dental instrument to manipulate the clamp 200.

In some embodiments, the clamp 200 may include a feature and/or mechanism that interacts with an adjacent structure (e.g., another portion of the clamp 200) to secure one or more of the wings 204 in a displaced position (e.g., a displaced position that enhances the ability of the user to thread the wing(s) 204 through an aperture in the dental dam 132 (FIG. 4)). Such a displaced position may be an upward position extending in a direction transverse (e.g., perpendicular) to the axis L (FIG. 1) (e.g., where one or both wings 204 extend from and substantially over the central portion 202).

For example, the clamp 200 may include one or more retention features (e.g., ring 230) on a portion of the clamp 200 (e.g., on a portion of one of the wings 204, such as, for example, the end portion 224). For example, the ring 230 may be coupled to (e.g., partially embedded within) one of the wings 204. In some embodiments, the ring 230 may be substantially continuous and extend through at least a majority of (e.g., an entirety) of the wing 204 (e.g., in a lateral direction). In some embodiments, the ring 230 may be discontinuous (e.g., a split ring) and extend only into a portion of the wing 204 to secure the ring 230 to the clamp 200. In some embodiments, the ring 230 may be coupled to the clamp 200 to enable the ring 230 to move (e.g., rotate) relative to a portion of the clamp 200 (e.g., the wing 204).

In other embodiments, a portion of the clamp 200 (e.g., one or more of the wings 204) may include other retention and/or attachment features that interact with an another adjacent structure of the clamp 200 (e.g., the other wing 204) to secure one or more of the wings 204 in the displaced position, for example, an upward position extending in a direction transverse (e.g., perpendicular) to the axis L (FIG. 1). For example, one or more of the wings 204 (e.g., both wings 204) may include attachment features, such as, complementary fastening features, buttons, latches, hook-and-loop connectors, adhesives, combinations thereof, or other suitable features, to place the wing(s) 204 in the displaced position (e.g., where both wings extend over the center portion 202).

In operation, the ring 230 (or other fastening feature) may be utilized to secure one or more of the wings 204 (e.g., both wings 204) in the displaced positioned over (e.g., substantially in vertical alignment with) the central portion 202. For example, the wings 204 may be lifted over the central portion 202 and the ring 230 may be rotated to capture a portion of the opposing wing 204 (e.g., the wing 204 lacking the ring 230) in an opening 232 of the ring 230. For example, at least a portion of the end portion 224 (e.g., the raised portion 222 and, optionally, the inner portion 222) of the opposing wing 204 lacking the ring 230 may be threaded through the opening 232. Once in the opening 232, a portion of the wings 204 (e.g., the terminal end or portion 228, the end portion 224, the raised portion 222, or combinations thereof) may contact the ring 230 and secure the wings 204 in the displaced position.

In some embodiments, the wings 204 may be biased in the extended position (e.g., as shown in FIGS. 5 and 6) in order to secure the wing 204 that is inserted into the ring 230 by applying an outward force on the ring 230 that is countered by the bias of the other wing 204 having the ring 203.

As noted above, the moving and securing the wings 204 in such a manner may enhance the ability of the user to thread the wing(s) 204 through an aperture in the dental dam 132 (FIG. 4). For example, such a feature minimizes the cross-sectional area of the clamp 200 in order for the clamp 200 to be threaded through the dental dam 132 without requiring substantially increasing the size of an aperture in the dam 132 that is to be fitted around a tooth and/or teeth.

In some embodiments, the ring 230 may be utilized to manipulate the clamp 200 during placement of the clamp 200 (e.g., using the ring 230 to assist in placing the clamp 200 over a tooth) and/or may be used to manipulate the clamp 200 during placement of the dental dam 132 (FIG. 4) (e.g., using the ring 230 to thread to a portion of the clamp 200 through the dental dam 132).

FIG. 7 depicts an isometric view (e.g., a top view) of a clamp for use in a dental procedure, such as, for example, an at least partially flexible clamp 300 for retaining a dental dam that may be at least partially similar to the clamps 100, 200 discussed above in relation to FIGS. 1 through 6. FIG. 8 depicts another isometric view (e.g., a bottom view) of the clamp of FIG. 7. As shown in FIGS. 7 and 8, the clamp 300 comprises a central portion 302. The clamp 300 may also comprise one or more wings 304 (e.g., two opposing wings) attached to and generally extending away from the central portion 302 along a longitudinal axis of the clamp 300. The central portion 302 may include one or more bands 320 (e.g., two reinforced, semicircular bands 320, similar to the bands discussed above) at least partially surrounding a web portion 306. A central aperture 308 may be defined within at least a portion of an interior area of the web portion 306 (e.g., a thin band). The web portion 306 may have a decreased thickness (e.g., as compared to one or more adjacent portions of the clamp 300, such as, portions of the wings) and may easily conform (e.g., elastically deform) around a subject tooth. The central aperture 308 may include an elongated shape (e.g., an elliptical or oval slot) having an enlarged central portion and two relatively narrow side portions as defined by the web portion 306.

In some embodiments, one or more recesses 336 may be defined at the central portion 302 (e.g., in bands 320 providing a thickness similar or the same as the web portion 306). Such recesses 336 may act to enable the central portion 302 to be elongated in order to be positioned over a tooth or teeth.

In some embodiments, the wings 304 may include recessed portions 336 (e.g., concave) extending along the length (e.g., a majority of the length) of the wings 304. Such recessed portions 334 may act to enhance the ability of the clamp 300 to be stretched (e.g., by providing a reduced thickness and/or by providing additional areas for a user to grasp the clamp 300).

In some embodiments, the bands 320 may include raised portions 340 at lateral sides of the central portion 302 (e.g., bordering the recesses 336) and transition portions 338 (e.g., portions that are rounded, tapered, chamfered, sloped, etc.) that gradually transition from the central portion 302 (e.g., the web portion 306) to a portion of the wings 304 (e.g., the recessed portions 336). In other embodiments, the bands 320 may include raised portions 340 along a majority or an entirety of the bands 320.

As above, the wings 304 may include an inner portion 321, a raised portion 322, and an end portion 324 (e.g., gripping portion, which may be used in conjunction with the recessed portions 334) extending outward from the central portion 302. The raised portion 322 may be located near an enlarged midsection of the wings 304 and the end portion 324 may extend (e.g., downward) from the raised portion 322 and inner portion 321 at an angle. One or more of the end portions 324 may include a terminal end 328 having a reduced cross section. For example, the end portion 324 may taper to the terminal end 328, which may end in the form of a point (e.g., a rounded point) that extends substantially in the same angled direction as the end portion 324 from the raised portion 322.

As depicted, the wings 304 may each include a respective hole 326 in an outer end thereof remote from the central portion 302 (e.g., proximate the raised portion 322). As above, one or more of the holes 326 may be utilized with another dental instrument to manipulate the clamp 300.

In some embodiments, the clamp 300 may include a feature and/or mechanism that interacts with an adjacent structure (e.g., another portion of the clamp 300) to secure one or more of the wings 304 in a displaced position (e.g., a displaced position that enhances the ability of the user to thread the wing(s) 304 through an aperture in the dental dam 132 (FIG. 4)). Such a displaced position may be an upward position extending in a direction transverse (e.g., perpendicular) to the axis L (FIG. 1) (e.g., where one or both wings 304 extend from and substantially over the central portion 302).

For example, the clamp 300 may include one or more retention features (e.g., ring

330) on a portion of the clamp 300 (e.g., on a portion of one of the wings 304, such as, for example, the end portion 324). For example, the ring 330 may be coupled to (e.g., partially embedded within) one of the wings 304. In some embodiments, the ring 330 may be substantially continuous and extend through at least a majority of (e.g., an entirety) of the wing 304 (e.g., in a lateral direction). In some embodiments, the ring 330 may be discontinuous (e.g., a split ring) and extend only into a portion of the wing 304 to secure the ring 330 to the clamp 300. In some embodiments, the ring 330 may be coupled to the clamp 300 to enable the ring 330 to move (e.g., rotate) relative to a portion of the clamp 300 (e.g., the wing 304).

In other embodiments, a portion of the clamp 300 (e.g., one or more of the wings

304) may include other retention and/or attachment features that interact with an another adjacent structure of the clamp 300 (e.g., the other wing 304) to secure one or more of the wings 304 in the displaced position, for example, an upward position extending in a direction transverse (e.g., perpendicular) to the axis L (FIG. 1). For example, one or more of the wings 304 (e.g., both wings 304) may include attachment features, such as, complementary fastening features, buttons, latches, hook-and-loop connectors, adhesives, combinations thereof, or other suitable features, to place the wing(s) 304 in the displaced position (e.g., where both wings extend over the center portion 302). In operation, the ring 330 (or other fastening feature) may be utilized to secure one or more of the wings 304 (e.g., both wings 304) in the displaced positioned over (e.g., substantially in vertical alignment with) the central portion 302. For example, the wings 304 may be lifted over the central portion 302 and the ring 330 may be rotated to capture a portion of the opposing wing 304 (e.g., the wing 304 lacking the ring 330) in an opening 332 of the ring 330. For example, at least a portion of the end portion 324 (e.g., the raised portion 322 and, optionally, the inner portion 322) of the opposing wing 304 lacking the ring 330 may be threaded through the opening 332. Once in the opening 332, a portion of the wings 304 (e.g., the terminal end or portion 328, the end portion 324, the raised portion 322, or combinations thereof) may contact the ring 330 and secure the wings 304 in the displaced position. For example, the ring 330 may be retained in a notch 329 defined in the terminal portion 328 of the wing 304.

In some embodiments, the wings 304 may be biased in the extended position (e.g., as shown in FIGS. 7 and 8) in order to secure the wing 304 that is inserted into the ring 330 by applying an outward force on the ring 330 that is countered by the bias of the other wing 304 having the ring 303.

As noted above, the moving and securing the wings 304 in such a manner may enhance the ability of the user to thread the wing(s) 304 through an aperture in the dental dam 132 (FIG. 4). For example, such a feature minimizes the cross-sectional area of the clamp 300 in order for the clamp 300 to be threaded through the dental dam 132 without requiring substantially increasing the size of an aperture in the dam 132 that is to be fitted around a tooth and/or teeth.

In some embodiments, the ring 330 may be utilized to manipulate the clamp 300 during placement of the clamp 300 (e.g., using the ring 330 to assist in placing the clamp 300 over a tooth) and/or may be used to manipulate the clamp 300 during placement of the dental dam 132 (FIG. 4) (e.g., using the ring 330 to thread to a portion of the clamp 300 through the dental dam 132).

Embodiments of the present disclosure including a clamp including the polymer material may provide benefits and advantages of retaining the dental dam to allow retention thereof while avoiding damage to healthy teeth and gums. In contrast, many conventional metal retention clamps require rigid attachment to sidewalls of the teeth. Embodiments of the dental dam assembly described herein may be used by pediatric dentists, general dentists, orthodontists, implant surgeons and/or periodontists and may be employed in many oral surgery and orthodontic procedures.

As noted above, while dental clamps are discussed herein primarily in use with a dental dam assembly, the dental clamps may be utilized with other dental devices and/or procedures. For example, a dental clamp itself, or in conjunction with other devices, may be utilized as dental matrices in a restoration process. Such matrices may be utilized, for example, to form the interproximal surfaces of a tooth during fabrication of a direct restoration. In some embodiments, matrix bands or forms may be held in place by the dental clamp and/or may be integral to the body of the dental clamp. Once the clamp is positioned, the bands or forms may be utilized in forming a restoration on one or more adjacent teeth and/or on the tooth that is surrounded by the dental clamp.

Once being apprised of the instant disclosure, one of ordinary skill in the art will be able to make and use the devices and assemblies disclosed herein.

Claims

CLAIMS What is claimed is:

1. A dental device, comprising:

a clamp comprising a polymer material, the clamp further comprising:

a central portion including at least one band defining a central aperture; and at least one wing attached to the central portion proximate the at least one band, the at least one wing configured to provide a surface for retaining a portion of another dental device.

2. The device of claim 1, wherein the clamp further comprises:

a raised portion extending linearly across a midsection of the at least one wing transverse to a longitudinal axis of the clamp; and

a gripping portion located on the at least one wing between the raised portion of the at least one wing and the central portion of the clamp.

3. The device of claim 1 , wherein the clamp further comprises a web portion proximate the central aperture of the central portion, wherein the web portion restricts at least a portion of the central aperture, the central aperture configured to receive a tooth therethrough proximate the web portion.

4. The device of claim 3, wherein the clamp includes at least two bands and the central portion includes at least one recess defined between the at least two bands.

5. The device of claim 1, wherein the at least one band comprises two bands, and wherein the central portion includes two recesses positioned between the two bands at two lateral locations of the clamp, wherein each of the two bands and the two recesses each define a portion of the central aperture.

6. The device of claim 1, further comprising at least one hole in an outer end of the at least one wing remote from the central portion, wherein the at least one hole is located and configured to enable retention of a dental instrument.

7. The device of any one of claims 1 through 6, further comprising a retention feature on the at least one wing configured to position the at least one wing at least partially over the central portion.

8. The device of claim 7, wherein the at least one wing comprises two wings, and wherein the retention feature is configured to secure the two wings together at least partially over the central portion.

9. The device of claim 8, wherein the retention feature comprises a ring on one of the two wings, wherein the ring is configured to receive the other one of the two wings through an opening in the ring in order to secure the two wings together at least partially over the central portion.

10. The device of any one of claims 1 through 6, wherein a majority of the central portion and the at least one wing extends along a longitudinal axis of the clamp in a normal position and further comprising a retention feature on the at least one wing configured to position the at least one wing in a direction extending transverse to the longitudinal axis in a retained position.

1 1. A dental dam assembly, comprising:

a dental dam; and

a flexible clamp configured to retain the dental dam, the flexible clamp comprising:

a central portion including at least one band defining a central aperture; and at least one wing attached to the central portion proximate the at least one band, the at least one wing configured to provide a surface to retain the dental dam relative to a tooth.

12. The dental dam assembly of claim 11 , wherein the clamp comprises the device of any one of claims 1 through 10.

13. A method of retaining a dental dam, comprising:

grasping at least one wing of a clamp; applying tension along an axis of the clamp to elongate at least one band proximate an aperture of a central portion of the clamp;

centering the aperture of the central portion over an exposed tooth;

securing a portion of the at least one band in an intermediate space between adjacent teeth by applying pressure to position the at least one band proximate the gingiva;

releasing the applied tension to enable the at least one band to at least partially surround the exposed tooth; and

retaining the dental dam proximate the exposed tooth with the at least one wing.

14. The method of claim 13, further comprising positioning an aperture of the dental dam over the exposed tooth prior to placing the clamp.

15. The method of claim 13, further comprising placing the clamp over the tooth prior to positioning an aperture of the dental dam over the exposed tooth.

16. The method of any one of claims 13 through 15, further comprising:

moving the at least one wing to a displaced position extending at least partially over the central portion; and

retaining the at least one wing in the displaced position with a retention feature.

17. A device for retaining a dental dam comprising a flexible clamp

circumscribing a central aperture and for receiving at least one tooth of a subject in the central aperture.

18. A dental dam assembly, comprising:

a dental dam; and

a flexible clamp circumscribing a central aperture and for receiving at least one tooth of a subject in the central aperture to retain the dental dam relative to the at least one tooth.