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WO2017200860A1 - Couronnes dentaires en fibre de verre - Google Patents

Couronnes dentaires en fibre de verre Download PDF

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Publication number
WO2017200860A1
WO2017200860A1 PCT/US2017/032346 US2017032346W WO2017200860A1 WO 2017200860 A1 WO2017200860 A1 WO 2017200860A1 US 2017032346 W US2017032346 W US 2017032346W WO 2017200860 A1 WO2017200860 A1 WO 2017200860A1
Authority
WO
WIPO (PCT)
Prior art keywords
dental
dental crown
fiberglass
crown
fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/032346
Other languages
English (en)
Other versions
WO2017200860A8 (fr
Inventor
Andy MANCINI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Figaro Crowns Inc
Original Assignee
Figaro Crowns Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Figaro Crowns Inc filed Critical Figaro Crowns Inc
Priority to CA3024099A priority Critical patent/CA3024099A1/fr
Priority to DE112017002542.7T priority patent/DE112017002542T5/de
Priority claimed from US15/593,526 external-priority patent/US20170333158A1/en
Publication of WO2017200860A1 publication Critical patent/WO2017200860A1/fr
Publication of WO2017200860A8 publication Critical patent/WO2017200860A8/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/73—Composite crowns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/087—Artificial resin teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/08—Artificial teeth; Making same
    • A61C13/09—Composite teeth, e.g. front and back section; Multilayer teeth

Definitions

  • a dental crown wherein the crown is made with a fiberglass or quartz fiber embedded with cosmetic resin composite.
  • Dental crowns may be made of molded zirconia but are quite expensive and their pricing limits its acceptable throughout the general population. Stainless steel crowns are less expensive but require the use of a protective "unnatural" color crown restoration for primary teeth. The stainless steel construction has a major problem, that the "silver" color of the steel crown is not acceptable, and the issue with the use of a zirconia cosmetic crown involves beyond the necessary thus excessive grinding of tooth structure to compensate for the lack of flexibility thus leading to some retention, adaptability and strength problems.
  • the invention provides a dental crown that is an inexpensive and affordable solution for restorations in pediatric and adult dentistry utilizing crowns, with added cosmetic value not allowed with the stainless steel crowns and not affordable with zirconia type crowns.
  • the invention utilizes either fiberglass or quartz filaments/fibers imbedded with an outer cosmetic composite resin material embodying the crown has a similar structure observed on fiberglass dental posts already widely used in dentistry for endodontic/restorative purposes for decades. The strength and bio-compatibility with a degree of flexibility is much closer to tooth structure then stainless steel and zirconia crowns.
  • FIG. 1 is a view of a dental crown of the invention in perspective view showing one of the reinforcing layers in a top view;
  • FIG. 2 is a view of a dental crown of the invention in perspective view showing a second reinforcing layer in a top view;
  • FIG. 3 is a view of a dental crown of the invention in perspective view showing the third reinforcing layer in a top view;
  • FIG. 4 is a view of the reinforcing layers of the invention in a top view
  • FIG. 5 is a perspective view of a typical tooth ready for a dental crown of the invention.
  • FIG. 6 is a perspective view of the dental crown of the invention secured to the tooth of FIG. 5;
  • FIG. 7 is a cross-sectional view of a dental crown of the invention affixed to a living tooth in a patient.
  • the invention as shown in the Figures is a dental crown using fiberglass, aramid, carbon or quartz filaments/fibers imbedded with an outer cosmetic composite resin material.
  • a natural tooth 10 includes roots 12 which are secured in alveolar bone 14.
  • the gum 16 is on top of bone 14 and surrounds tooth 10.
  • the exterior biting surfaces of the tooth 10 are enamel and in a dental crown procedure the tooth is ground down to form a support onto which the dental crown 20 may be affixed.
  • the existing tooth does not have sufficient structure to hold the restorative dental crown 20 in place and dental posts are installed which form the basis of the material to which the dental crown 20 is affixed.
  • the dental crown 20 of the invention is affixed on top of the defined dentin 22 although it would be the same as if a dental post was in place.
  • the dental crown 20 is a cup-shaped cap having a closed end 24 forming the occlusal table and sides which terminate in what is called the gingival extremity 26.
  • the interior 28 of the dental crown 20 is matched to mate with either the prepared tooth dentin 22 or a dental post (not shown). The securement of a dental crown to the tooth or post is well known in the art.
  • the occlusal anatomy of the dental crown in general conforms in the location of the sulcus groove, supplemental occlusal grooves, the cusps and the cuspal planes with occlusal anatomy of the tooth.
  • the topography of the dental crown 20 of the invention externally is that of any acceptable crown for the tooth involved.
  • the fiberglass or quartz fiber containing dental crowns of the invention may be made with the same materials currently used in FiberKleer® Posts from Pentron Clinical of Orange, California which use fiberglass within a mixture of cured copolymers bisphenol A-glycidyl methacrylate (BISGMA), urethane dimethacrylate (UDMA) and HDDMA.
  • the Safety Data Sheet for Pentron lists 1,6-hexanediyl bismethacrylate from 10-30%, 7,7,9(or 7,9,9)-trimethyl-4, 13-dioxo-3,14-dioxa-5,12-diazahexadecane-l,16- diylbismethacrylate from 5-10%, diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide from 0.1 to 1% and 2-(Diethylamino)ethyl methacrylate from 0.1 to 1%.
  • the fibers of FiberKleer posts may be barium borosilicate glass, glass fibers.
  • quartz fibers may be used alone or in addition to other dentally acceptable fibers.
  • Other acceptable glass fibers include Reforpost Glass Fibers from ANGELUS INDIJSTRIA DE PRODUTOS ODONTOL0GICOS S/A sociedad anonima (sa) BRAZIL Rua Waldir Landgraf, 101 Lindoia, Londrina, PR, BRAZIL which makes glass fiber infraradicular posts with conical tips.
  • ParaPost® Fiber Lux from Coltene/Whaledent Inc. of Cuyahoga falls, Ohio also makes an acceptable glass-filled composite.
  • the fibers are embedded within dentally acceptable composite resins, also already used in dentistry for decades, to form the dental crowns according to standard procedures for creating dental crowns.
  • the outer surface of the dental crowns is a cosmetic resin composite substrate which can provide the appropriate color and good mouth feel.
  • Fiber-reinforced composites for dental materials are discussed in U.S. patent 7,673,550 to Karmaker et al., the disclosure of which is incorporated herein by reference. Contrary to that patent, this invention does not contemplate the need to form rods or sheaths and instead forms the dental crowns from a mixture of fiberglass/quartz fibers and resin without orienting into solid rods.
  • the methods includes roughening the outer surface of the tooth (teeth) to be restored, applying a bonding agent in the crown of the invention to be seated on the tooth/teeth to be restored tooth with then mechanical/chemical retention.
  • the dental crowns may include from 25 to 85% fibers and more preferably between 30 to 70%, with the remainder being the resin and fillers.
  • the outer layer is a cosmetic resin composite bonded to the main body of the dental crown which is formed from the fiber/resin mixture.
  • the dental crown 20 of the invention is formed of layers of fiberglass mesh sheets 30 from one to preferably three sheets. More sheets may be used up until their combined thickness makes it unneeded. Generally, more than 6 sheets may be difficult unless the sheet thickness is smaller.
  • the fiberglass sheets are preferably about 0.0035 inches (0.0889 mm) thick with sheet weights of about 2.4 ounces per square yard (8.1 grams per square millimeter.
  • SA Surface Area, V for Volume and Tooth Type referring to typical teeth sizes to note relative sizes.
  • each successive sheet is preferably rotated form the first sheet as shown in Figures 1-4.
  • the second mesh sheet 32 is shown in Fig. 2
  • the third sheet 34 is shown in Fig. 3.
  • the effect of all three mesh sheets 30, 32 and 34 is shown in Fig. 4 which shows how coverage over the dental crown 20 is excellent with additional mesh sheets.
  • Mesh sheets 30, 32 and 34 may all be identical other than their rotation relative to another layer.
  • Each of Figs. 1-3 show a top view of the newly added mesh sheet as well as a perspective view of the cumulative effect of adding another layer to the previous figure.
  • a mold (not shown) is used for each dental crown to be formed and the fibers are layered, preferably in different directions and the mold is closed and resin is injected into the mold under pressure to embed the fibers and provide great strength.
  • the fiberglass layers may be in a mat but surprisingly, individual layers of fiberglass sheets provided better strength at a better cost point.
  • the fiberglass is saturated with the resin through the dental crown and is trimmed as need after removed from the mold.
  • the resin may be a suitable dental resin as used in the industry. It may be an epoxy resin such as EPO-TEK 301 from Epoxy Technology, Inc., 14 Fortune Drive, Billerica, MA 01821 USA. Its EPO-TEK 301, as with all epoxies, is a two component epoxy with Part A and Part B. Part A contains a Bisphenol A Diglycidyl Ether Resin and a reactive diluent. Part B contains trimethyl-1, 6-Hexanediamine. Any dentally accepted resin including epoxies may be used, the Epo-Tek 301 has been tested and works well.
  • Toothodontis involves working with patients that have a wide range of tooth colors.
  • a colorant may be added to the resin to produce the color that best matches the tooth which will receive a crown.
  • Dental colorants are well known.
  • a suitable and typical colorant is titanium oxide, Ti0 2 . Titanium oxide is typically from 0.3 to 1.2 micrometers in size. Iron oxide (Fe0 2 ) may be used to impart a yellowing color.
  • Fibers have referenced fiberglass but other fibers may be used including quartz fibers, carbon fibers and aramid fibers such as DuPont Kevlar ® brand fibers.
  • Use of the terms "fibers” and “fiberglass” herein are intended to encompass a wide range of fibers that may be woven into mesh sheets that will impart strength into a dental crown of the invention.
  • Dental crowns are primarily used in humans but may be used in veterinary applications as well.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Preparations (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne une couronne dentaire composée de feuilles de mailles de fibres en fibres de verre, en fibres d'aramide, de carbone ou de quartz noyées dans une résine acceptable sur le plan dentaire. La combinaison des deux matériaux ajoute de manière synergique une résistance inégalée et une valeur cosmétique améliorée à la couronne dentaire pour un prix beaucoup plus bas en raison des coûts moins élevés du matériau et du procédé de fabrication.
PCT/US2017/032346 2016-05-19 2017-05-12 Couronnes dentaires en fibre de verre Ceased WO2017200860A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA3024099A CA3024099A1 (fr) 2016-05-19 2017-05-12 Couronnes dentaires en fibre de verre
DE112017002542.7T DE112017002542T5 (de) 2016-05-19 2017-05-12 Glasfaser-Zahnkronen

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201662388809P 2016-05-19 2016-05-19
US62/338,809 2016-05-19
US62/388,809 2016-05-19
US15/593,526 2017-05-12
US15/593,526 US20170333158A1 (en) 2016-05-19 2017-05-12 Fiberglass dental crowns

Publications (2)

Publication Number Publication Date
WO2017200860A1 true WO2017200860A1 (fr) 2017-11-23
WO2017200860A8 WO2017200860A8 (fr) 2018-02-08

Family

ID=60325621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/032346 Ceased WO2017200860A1 (fr) 2016-05-19 2017-05-12 Couronnes dentaires en fibre de verre

Country Status (1)

Country Link
WO (1) WO2017200860A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111317587A (zh) * 2020-02-19 2020-06-23 常熟理工学院 一种基于Laplace变形的牙齿基底冠数字化设计方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5919044A (en) * 1993-09-27 1999-07-06 Tru-Flex Post Systems, Inc. Flexible post in a dental post and core system
US20040224285A1 (en) * 2003-05-09 2004-11-11 Bisco, Inc. Reinforced composites for use in dental restorations
US7673550B2 (en) * 2005-03-21 2010-03-09 Pentron Clincal Technologies, LLC Fiber-reinforced composites for dental materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5919044A (en) * 1993-09-27 1999-07-06 Tru-Flex Post Systems, Inc. Flexible post in a dental post and core system
US20040224285A1 (en) * 2003-05-09 2004-11-11 Bisco, Inc. Reinforced composites for use in dental restorations
US7673550B2 (en) * 2005-03-21 2010-03-09 Pentron Clincal Technologies, LLC Fiber-reinforced composites for dental materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111317587A (zh) * 2020-02-19 2020-06-23 常熟理工学院 一种基于Laplace变形的牙齿基底冠数字化设计方法
CN111317587B (zh) * 2020-02-19 2021-09-10 常熟理工学院 一种基于Laplace变形的牙齿基底冠数字化设计方法

Also Published As

Publication number Publication date
WO2017200860A8 (fr) 2018-02-08

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