Posterior occlusal veneering tooth preparation machine needle
By designing a rear tooth veneer dental body with limit ring and scale, the problem of low accuracy of traditional needle preparation is solved, and the precise control of the shaft length and efficient preparation of the shoulder shape are achieved, which is in line with micro Creating repair principles and improving repair effects.
Patent Information
- Application Number
- CN202420714078.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-08
AI Technical Summary
Traditional full crown teeth preparation needles are difficult to control the length of the shaft surface, and the preparation accuracy is not high, and the ideal veneer shoulder shape cannot be formed, resulting in poor minimally invasive repair results.
A rear tooth veneer preparatory needle is designed, including a handle, a needle body and a limit ring. The needle body is a combination of a cylindrical needle body and a conical needle body. The limit ring can be slid or fixed, providing Scale and diamond abrasive surface for precise control of dental tissue abrasion.
Through the coordination of the limit ring and scale, the precision of the shaft length is ensured, the accuracy of the appearance of the veneer shoulder is improved, the amount of tooth tissue is reduced, and the principle of minimally invasiveness is complied with, the preparation time of tooth is shortened, and the preparation time of tooth is improved. Repair effect.
Smart Images
Figure CN222285645U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of oral equipment, in particular to a tooth preparation needle for posterior occlusal veneer. Background Art
[0002] In the past, traditional full crown restoration was used for posterior tooth defects, but full crown restoration requires a large amount of tooth preparation, which does not conform to the concept of minimally invasive restoration. Currently, occlusal veneer minimally invasive restoration can be used for posterior tooth defects. Posterior occlusal veneers only need to prepare the occlusal surface of the posterior teeth and a small amount of axial surface. Traditional full crown tooth preparation needles are difficult to control the length of the axial tooth preparation, and the end is a right angle or round shape, which cannot prepare the ideal veneer shoulder shape. The occlusal veneer preparation accuracy is not high and errors are prone to occur. Utility Model Content
[0003] In view of the above-mentioned problems, the utility model discloses a posterior occlusal veneer tooth preparation needle to solve the problem that the full crown tooth preparation needle occlusal veneer preparation in the prior art has low accuracy and is prone to errors.
[0004] The utility model discloses a posterior occlusal veneer tooth preparation needle, which comprises a handle, a needle body and a limiting ring;
[0005] The needle body comprises a cylindrical needle body and a conical needle body at the end of the cylindrical needle body, and the handle is fixedly connected to the other end of the cylindrical needle body;
[0006] The cylindrical needle body is provided with a spiral groove, and the limiting ring is sleeved on the cylindrical needle body and can slide or be fixed along the cylindrical needle body.
[0007] In some of the embodiments, bolts are provided on the side wall of the limiting ring, so that the limiting ring is connected to the spiral groove through the bolts.
[0008] In some of the embodiments, the cylindrical needle body is provided with scales.
[0009] In some embodiments, the interval between adjacent scales is 0.2 mm.
[0010] In some embodiments, the cylindrical needle body and the conical needle body are an integral structure.
[0011] In some embodiments, the needle body includes a stainless steel substrate, and diamond abrasives are plated on the outer wall of the stainless steel substrate.
[0012] In some of the embodiments, the thickness of the diamond abrasive is 0.2-0.5 mm.
[0013] In some embodiments, the length of the cylindrical needle body is 2.0 mm, and the length of the conical needle body is 0.5 mm.
[0014] The above utility model has at least one of the following advantages or beneficial effects:
[0015] 1. The posterior occlusal veneer tooth preparation needle provided by the utility model has a movable limit ring as a stopper added to the needle body. The stopper has the function of length positioning in the axial direction of the tooth, which can ensure a smaller axial length grinding amount when medical staff grind away the posterior tooth tissue; at the same time, the stopper can be moved on the cylindrical needle body provided with a scale, so that the tooth tissue to be ground out can be determined according to the actual situation of different clinicians and patients, avoiding the problem of excessive or insufficient tooth preparation caused by the doctor's tooth preparation based on clinical experience, so that the longitudinal dimension in the tooth preparation process can be well controlled, the posterior occlusal veneer preparation is completed, the minimally invasive principle is achieved, and the tooth preparation time is shortened. The posterior occlusal veneer tooth preparation needle can minimally invasively grind away tooth tissue as little as possible, improves the accuracy of veneer preparation, conforms to the current clinical minimally invasive treatment principle, and improves the subsequent restoration effect.
[0016] 2. The posterior occlusal veneer tooth preparation needle provided by the utility model can better prepare the veneer shoulder shape by arranging the needle body to include a cylindrical needle body and a conical needle body located at the end of the cylindrical needle body. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.
[0018] Figure 1 This is a schematic diagram of the structure of the posterior occlusal veneer tooth preparation needle of the utility model;
[0019] Figure 2 A schematic diagram of the application of the posterior occlusal veneer tooth preparation needle of the utility model;
[0020] Among them, 1 is a cylindrical needle body; 11 is a spiral groove; 12 is a scale; 2 is a conical needle body; 3 is a handle; 4 is a limit ring; 41 is a bolt. DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.
[0022] like Figure 1As shown, the utility model discloses a posterior occlusal veneer tooth preparation needle. Specifically, the posterior occlusal veneer tooth preparation needle includes a handle 3, a needle body and a limit ring 4; the needle body includes a cylindrical needle body 1 and a conical needle body 2 located at the end of the cylindrical needle body 1, and the handle 3 is fixedly connected to the other end of the cylindrical needle body 1 (that is, the end of the cylindrical needle body 1 away from the conical needle body 2, which is opposite to the end of the cylindrical needle body 1); a spiral groove 11 is opened on the cylindrical needle body 1, and the limit ring 4 is sleeved on the cylindrical needle body 1 and can slide or be fixed along the cylindrical needle body 1. The utility model sets a conical needle body 2 at the end of the cylindrical needle body 1. Due to the cone shape, the shoulder shape of the posterior occlusal veneer can be better prepared (specifically, the conical needle body 2 can better grind the shoulder edge of the tooth to form a smooth, corner-free, continuous and consistent shoulder shape, ensuring the tight fit of the subsequent occlusal veneer and the subsequent repair effect), thereby improving the preparation accuracy of the shoulder shape of the posterior occlusal veneer; and a limit ring 4 that can slide or be fixed along the cylindrical needle body 1 is set on the cylindrical needle body 1 as a stopper. The stopper plays a role of depth positioning, thereby enabling it to have a length positioning function in the axial direction, allowing medical staff to ensure a smaller axial length grinding amount when grinding away the posterior tooth tissue, preventing the longitudinal dimension from being too deep or too shallow during the tooth preparation process, thereby being able to well control the longitudinal dimension during the tooth preparation process, improving the quality of tooth preparation, and shortening the tooth preparation time.
[0023] Specifically, a bolt 41 is passed through the side wall of the limiting ring 4 to connect the limiting ring 4 to the spiral groove 11 through the bolt 41, thereby realizing a fixed connection between the limiting ring 4 and the cylindrical needle body 1, and then the limiting ring 4 can be fixed at a corresponding position on the cylindrical needle body 1 as needed.
[0024] In the embodiment of the utility model, the cylindrical needle body 1 is provided with a scale 12, and the interval between adjacent scales 12 is 0.2 mm, that is, a scale 12 is marked every 0.2 mm. The values of the scale 12 on the cylindrical needle body 1 include 0.2 mm, 0.4 mm, 0.6 mm... in sequence.
[0025] In an embodiment of the utility model, the cylindrical needle body 1 and the conical needle body 2 are an integrated structure, that is, the needle body is an integrally formed structure, the needle body includes a stainless steel substrate, and the outer wall of the stainless steel substrate is plated with diamond abrasive (that is, a layer of diamond abrasive is plated on the stainless steel substrate by electroplating), specifically, the thickness of the diamond abrasive is 0.2 to 0.5 mm.
[0026] In an embodiment of the utility model, the length of the cylindrical needle body 1 is 2.0 mm, the diameter is 1.0 mm, the length of the conical needle body 2 is 0.5 mm, and the diameter of the limiting ring 4 can be 3 mm; in actual applications, the sizes of the cylindrical needle body 1, the conical needle body 2 and the limiting ring 4 can be set as needed.
[0027] In the embodiment of the utility model, the conical needle body 2 gradually becomes smaller from one end adjacent to the cylindrical needle body 1 to the other end, and is a round-headed cone. In practical applications, different tapers of the conical end can be set as needed.
[0028] like Figure 2 As shown, when a dentist is preparing the tooth on the axial surface of the patient's posterior occlusal veneer in the clinic, the above-mentioned posterior occlusal veneer tooth preparation needle can be used to position the tooth axial surface and the mesiodistal surface in the occlusal direction to ensure that the longitudinal axial surface preparation size does not exceed 2mm. Specifically, the positioning end of the cylindrical needle body 1 is brought into contact with the tooth, and 2 to 3 positioning grooves can be processed. During the processing, due to the effect of the limit ring 4, the depth of the groove will not exceed 2.0mm, and the longitudinal size can be controlled. Then, several fixed depth grooves are connected into a smooth curved surface, which shortens the time for tooth preparation and reduces unnecessary tooth tissue wear, conforms to the current minimally invasive surgical principles, and can ensure the subsequent repair effect.
[0029] Through the above operation, the outer part of the tooth, that is, the axial surface and the mesiodistal surface of the tooth, is evenly ground off by 0.5 to 1.5 mm. The amount of longitudinal grinding involved in the grinding process is generally 2.0 mm in length. It should be noted that each surface is evenly ground out by 0.5-1.5 mm to form a smooth, continuous and consistent curved surface, and a clear, smooth, continuous and consistent non-angle shoulder with a width of 0.5-1.0 mm can also be formed on the neck of the posterior teeth.
[0030] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.
[0031] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.
Claims
1. A tooth preparation needle for posterior occlusal veneer, characterized in that: It includes a handle, a needle body and a limiting ring; The needle body comprises a cylindrical needle body and a conical needle body at the end of the cylindrical needle body, and the handle is fixedly connected to the other end of the cylindrical needle body; The cylindrical needle body is provided with a spiral groove, and the limiting ring is sleeved on the cylindrical needle body and can slide or be fixed along the cylindrical needle body.
2. The posterior veneer tooth preparation needle according to claim 1, characterized in that: Bolts are passed through the side wall of the limiting ring, so that the limiting ring is connected to the spiral groove through the bolts.
3. The posterior veneer tooth preparation needle according to claim 1, characterized in that: The cylindrical needle body is provided with scales.
4. The posterior veneer tooth preparation needle according to claim 3, characterized in that: The interval between adjacent scales is 0.2 mm.
5. The posterior veneer tooth preparation needle according to claim 1, characterized in that: The cylindrical needle body and the conical needle body are an integrated structure.
6. The posterior veneer tooth preparation needle according to claim 1, characterized in that: The needle body comprises a stainless steel substrate, and the outer wall of the stainless steel substrate is plated with diamond abrasive.
7. The posterior veneer tooth preparation needle according to claim 6, characterized in that: The thickness of the diamond abrasive is 0.2-0.5 mm.
8. The posterior veneer tooth preparation needle according to claim 1, characterized in that: The length of the cylindrical needle body is 2.0 mm, and the length of the conical needle body is 0.5 mm.