CN2096974U

CN2096974U - Auto-tapping fastening nail for repairing tooth

Info

Publication number: CN2096974U
Application number: CN 91211545
Authority: CN
Inventors: 赵培英
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-25
Filing date: 1991-04-25
Publication date: 1992-02-26

Abstract

The utility model provides a novel device for repairing a tooth body, which is composed of an exposed part and a tapping part which form a whole unit, wherein, the exposed part is a flat surface with a slope, a through hole is arranged in the middle part of the exposed part, and the tapping part has screws in the shape of a flat bottom acute angle. The joint of the screw and the exposed part forms a cylinder, the cylinder gradually forms a cone body towards the tip end, and a longitudinal groove is arranged on the screw part. The utility model can also be designed as two segments which can be connected by disconnecting points, and each section is a screw whole body without a groove. The top end of the exposed part is connected with a handle, the tapping part can enter a tooth root by twisting a handle, and the utility model is made of stainless materials for medical use.

Description

Auto-tapping fastening nail for repairing tooth

This utility model belongs to the tooth prosthetic device.

Hospitalize tooth hat body is damaged at present, mainly is root of the tooth to be pulled out again have a denture made, or adopts rustless steel not have the reparation of screw thread finished product retention pin.This finished product retention pin is put into part by cylinder exposed parts and cone and is formed wholely, puts into the root pipe of the tooth root of partly packing into, and exposed parts and resin, bonding agent etc. be fixing corona together, reaches the reparation purpose.Temperature influence was bigger when this device was bonding, was difficult to reach ideal retention effect, and maintenance power is relatively poor, easily came off, and the reparation life-span is shorter, also had problems such as the easy fragmentation of hat body.The up-to-date in the world Sweden Dentntus that has is preced with the stake dummy, this device is made by gold-plated or pure titanium metal, attack part band triangle thread, the exposed parts top is the plane of band translot, frictional force is bigger when attacking, the teeth roots internal stress is increased, periodontal tissue is sustained damage, cost is also high.(seeing 89 years " Asia-Pacific dentistry quarterly ")

The purpose of this utility model, it is difficult with the bonding agent blending to solve the finished product retention pin exactly, and temperature influence is big, repairs the life-span weak point and be preced with stake dummy internal stress big, the problem that cost is high provides the novel tooth prosthetic device that a kind of internal stress is little, retention effect good, application is convenient, cost is low.

Task of the present utility model is finished like this: design a kind of tooth body and repair retention pin, by exposed parts with attack two sections integral body of forming of part, it is characterized in that exposed parts (A) is the flat horizontal surface with a slope that tilts to the top, the centre position has through hole (W), attacking part (B) is threaded, with the exposed parts junction be cylinder, form cone gradually to tip direction, on threaded position, have a vertical groove (H).The length of exposed parts (A) is 3～5 millimeters, the tapering of cone is 20～30 °, the core diameter of thread (d) is 0.08～0.12 millimeter with the difference in footpath, top (D), the width of the screw thread ditch of slotting in the position (H) is 0.3～0.6 millimeter, length runs through the whole part of attacking, and the degree of depth is identical with the depth of thread.Screw thread form is flat acute angle profile of tooth, and attacking direction shape is acute angle, and exposed junction direction profile of tooth is a flat shape.Such structure can guarantee to attack part (B) precession root of the tooth root pipe smoothly, reduces the frictional force to the root pipe, and precession screws out difficulty easily, has both reduced the suffered internal stress of root pipe, prevents to burst apart in the root pipe, has also improved retention effect.Repair the needs of position according to tooth, this utility model also can be made into cut-off point (S ₁, S ₂) two joints that connect, each joint all is a screwed integral body, and major diameter of thread is 0.8～1.2 millimeter of φ, and the cut-off point diameter is 0.3～0.6 millimeter of φ, and length of each joint integral body is 6～10 millimeters.Incisor before this structure is mainly used in and repairs bicuspid, grinds one's teeth in sleep and descend.Because diameter is little, so the ditch of no longer slotting.Precession root of the tooth position promptly attack part, what stay the root of the tooth outside is exposed parts.For the ease of using the also subsidiary handle of this utility model.The exposed parts top can be connected or separate with the handle (4) that hard material is made.Twist the handle that connects exposed parts during clinical practice, make to attack partly to enter root of the tooth.This utility model adopts the medical stainless steel material to form, and material property is near gold-plated, pure titanium class noble metal, and material source is wide, and cost is low, is convenient to processing and manufacturing.

Adopt above-mentioned design, this utility model has fundamentally been eliminated bonding agent blending difficulty, temperature influence is big, repair short problem of life-span, solved the big problem of cost height, internal stress that hat stake dummy exists effectively, provide cheap, used the novel tooth prosthetic device convenient, that internal stress is little, retention effect is good, helped extensive popularization and application, realized giving the target of meter.

Below accompanying drawing is illustrated.

Fig. 1 is existing no screw thread finished product retention pin;

Fig. 2 is this utility model front view;

Fig. 3 is the partial side view of Fig. 2;

Fig. 4 is this utility model merogenesis band handle structure figure;

Fig. 5 is that this utility model merogenesis reparation tooth position is put sketch map.

(1)-no screw thread finished product retention pin among the figure, (2)---tapping screw thread tooth body is repaired retention pin, and (3)-merogenesis tooth body is repaired retention pin, (4)-handle, (5)-corona, (6)-root of the tooth.

By embodiment this utility model is described further at last.

Example one, treatment Upper Anterior Teeth.With homemade medical stainless steel material this utility model, 10 millimeters of length overalls, wherein exposed parts length is 4 millimeters, 1.5 millimeters of the intermediary through-hole diameter φ of flat horizontal surface, attacking the cylinder diameter that partly is connected with exposed parts is 1.6 millimeters of φ, and the cone tapering is 20 °, and the core diameter of thread is 0.1 millimeter with the difference in footpath, top, vertically have the groove of 6 millimeters long, 0.2 mm wide at the screw thread position, screw thread form is flat acute angle profile of tooth.During treatment, be drilled in earlier and get out the root pipe on the root of the tooth with flat face, through a week to two all situations normal, the charges of root pipe can be taken out, plastic handle is enclosed within on the exposed parts, twists handle this utility model is attacked part precession root pipe, according to a conventional method corona is repaired then.With this method treatment, without the bonding agent cementation, nail is not dark-coloured occurs, and dummy is true to nature, attractive in appearance.Example surplus the clinical practice 120, retention effect reaches 100% maintenance rate.

Example two, treatment bicuspid.With homemade medical stainless steel material this utility model segment type, whole with two joints that cut-off point connects, 8 millimeters of every joint length, major diameter of thread is 1 millimeter, following joint cut-off point S ₁Diameter is 0.4 millimeter of φ, on save cut-off point S ₂Diameter is 0.6 millimeter of φ, and the treatment step connects exposed parts with example one with the metallic handle, twists handle and will attack 5 millimeters of the root pipes that part is attacked a root of the tooth of bicuspid, fractures down gently then and saves cut-off point S ₁, continue will go up the root pipe that joint screws in bicuspid another root of the tooth with this method, fracture again and go up joint cut-off point S ₂, take out handle, then the tooth body is carried out routine reparation.

Also can treat with this method and to grind one's teeth in sleep, down before incisor etc., effect is also fine.Example surplus the clinical practice 10, the maintenance rate reaches 100%.

Facts have proved, carry out the reparation of tooth body with this utility model, simple and easy to do, the reparation life-span is long, and the tooth body is attractive in appearance, comfortable, has no adverse reaction.Both need not pull out healthy and strong root of the tooth, and needn't go to have a denture made by the intact adjacent teeth of grinding again, and exempt patient's misery, the actual repair effect is highly desirable.If can extensively promote, economic benefit and social benefit will be very remarkable.

Claims

1, a kind of tooth body is repaired retention pin, by exposed parts with attack the integral body that part is formed, it is characterized in that exposed parts A is a flat horizontal surface with a slope, the centre position has through hole W, attack part B and be threaded, with the exposed parts junction be cylinder, form cone gradually to tip place, on threaded position, have a vertical groove H.

2, repair retention pin according to the described tooth body of claim 1, it is characterized in that said exposed parts A top is thin, is cylinder with attacking part B junction, forms flat horizontal surface with a slope by the top to cylinder, length is 3～5 millimeters, and the thickness of top sake is 0.1～0.6 millimeter.

3, repair retention pin according to the described tooth body of claim 1, it is characterized in that the said cylindrical external diameter of part B of attacking is 1.2～1.8 millimeters of φ.The tapering of cone is 20～30 °, and core diameter of thread d is 0.08～0.12 millimeter with the difference of footpath, top D, and the length of attacking part B is 5～8 millimeters.

4, repair retention pin according to the described tooth body of claim 1, it is characterized in that said to attack the slot width of ditch H of part B be 0.3～0.6 millimeter, the degree of depth is identical with screw thread, and length runs through the part of attacking of whole screw thread.

5, repair retention pin according to the described tooth body of claim 1, it is characterized in that the said screw thread of attacking part B is flat acute angle profile of tooth, attacking the direction profile of tooth is acute angle, and exposed junction direction profile of tooth is a flat shape.

6, repair retention pin according to the described tooth body of claim 1, it is characterized in that can be made into and use cut-off point S ₁, S ₂Two joints that connect, each joint is a screwed integral body.

7, repair retention pin according to the described tooth body of claim 6, it is characterized in that said threaded entire outer diameter is 0.8～1.2 millimeter of φ, cut-off point (S ₁, S ₂) diameter is 0.3～0.6 millimeter of φ, the whole length of each joint is 6～10 millimeters.

8, repair retention pin according to claim 1 or 6 described tooth bodies, it is characterized in that said exposed parts top can be connected or separate with the handle 4 that hard material is made.

9, repair retention pin according to claim 1 or 6 described tooth bodies, it is characterized in that it being to adopt the medical stainless steel material to form.