CN112386344B

CN112386344B - Elastic veneered bridge and preparation method thereof

Info

Publication number: CN112386344B
Application number: CN202011100370.4A
Authority: CN
Inventors: 余忠钰; 李悦; 王茜
Original assignee: Rurong Chengdu Medical Technology Co ltd
Current assignee: Rurong Chengdu Medical Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-10-21
Anticipated expiration: 2040-10-15
Also published as: CN112386344A

Abstract

The invention relates to an elastic veneered bridge and a preparation method thereof, wherein veneers of the elastic veneered bridge are mutually connected to form a bridge body, and each veneering covers one tooth when in use; the elastic veneering bridge is fixed with the teeth in a multi-direction elastic cross fixing mode. According to the elastic veneering bridge and the preparation method thereof provided by the invention, the teeth of a patient do not need to be prepared in advance, so that the teeth of the patient are not damaged; the elastic veneering bridge veneer is fixed with teeth in a multidirectional elastic cross fixing mode, does not need adhesives and connecting structures, is convenient to take and wear, and does not generate side effects; when the elastic veneering bridge is covered on the teeth, the veneers do not enter the inverted concave parts of the teeth in the positioning direction, and the elastic veneering bridge does not generate stress on the teeth.

Description

Elastic veneered bridge and preparation method thereof

Technical Field

The invention relates to an elastic veneering bridge and a preparation method thereof, which aims at a user who is eager to change the tooth form and the tooth appearance on the premise of not damaging teeth and the aesthetic forecast of a stomacher aiming at a patient, and belongs to the field of stomatology.

Background

In the oral field, there are a large number of patients who are dissatisfied with the color or appearance of their teeth. For such cases, existing solutions generally include: orthodontic, aesthetic veneering, bleaching, and aesthetic restorations. However, these solutions have their own limitations or drawbacks. The period of orthodontics is long, the price is high, and the problem of occlusion is often caused; aesthetic veneering and aesthetic restorations are expensive and require pre-preparation of the patient's teeth; the bleaching effect is unstable and often causes problems such as tooth sensitivity.

Prior art EP3199122A1 discloses an arch facing and a method for manufacturing the same, in which the arch facing is adhered to teeth by means of an adhesive, which leaves the adhesive on the teeth when the arch facing is removed. Also as in prior art US20050227204A1, a daily wearing temporary dental veneer is disclosed, which is adhered to the teeth using a non-toxic cement or adhesive, removed by rinsing with warm water in the mouth, and any remaining adhesive is removed from the teeth by flossing and brushing, preferably not more than 24 hours, and should not be left during the night sleep. These solutions for adhering a veneer to teeth by means of an adhesive require removal of the adhesive remaining on the teeth by rinsing with warm water or brushing, are inconvenient to use, and cause damage to the teeth.

Prior art US9820828 discloses a detachable dental overlay which is fixed to teeth by means of a connecting member (e.g., a mounting cap) and is provided with a mounting button to assist a user in inserting and removing the mounting cap from the teeth, making it inconvenient to wear and detach the dental overlay.

It can be seen that the veneers of the prior art suffer from the following drawbacks: the use of additional adhesive or connecting members is required, the wearing and use is very inconvenient, and the adhesive remains to cause a series of subsequent problems.

Disclosure of Invention

The invention aims to provide an elastic veneering bridge and a preparation method thereof, which can achieve the purpose of changing the color and the shape of teeth of a user by covering a layer of material on the surfaces of the teeth; the teeth of the patient do not need to be prepared in advance, so that the aim of not damaging the teeth of the patient is fulfilled; by selecting the color of the material, a stable color effect can be achieved; the preparation period can be greatly shortened by adopting a CAD design method; by adopting the unique in-place way and the inverted concave design, the elastic veneering bridge can generate certain retention force without adhesives and simultaneously can not generate stress on teeth; the design of the elastic veneering bridge of the present invention can replace the traditional removable denture repair to repair the defective dentition while reducing the time cost of the user and improving the aesthetic effect and comfort. The above characteristics can meet the aesthetic requirements of patients, and compared with the traditional mode, the cost of the patients can be greatly saved, and the satisfaction degree of the patients is improved.

In order to solve the technical problem, the invention adopts the following technical scheme:

(1) An elastic veneered bridge, wherein veneers are connected with each other to form a bridge body, and each veneering covers one tooth when in use; the elastic veneering bridge is fixed with teeth in a multi-direction elastic cross fixing mode, wherein the multi-direction elastic cross fixing mode means that the positioning way of at least one veneer in the elastic veneering bridge is different from the positioning ways of other veneers; when the elastic veneered bridge is covered on the teeth, the direction of the veneering inserted into the teeth is called a emplacement path; when the elastic veneer bridge is overlaid on the teeth, the veneer does not enter the undercut of the teeth in the direction of its seating; the undercut is a portion below the maximum peripheral line of the tooth in the facing seating direction.

(2) According to the elastic faced bridge in the step (1), the positioning channels of all the veneers in the elastic faced bridge are different.

(3) According to the elastic veneered bridge in the step (1) or (2), the front tooth veneering of the elastic veneered bridge covers the tongue side of the teeth so as to achieve better retention effect.

(4) The elastic veneered bridge according to any one of (1) to (3), wherein the front tooth veneers of the elastic veneered bridge do not cover the lingual side of the teeth, so that the occlusion function of a patient is realized and the better comfort is realized.

(5) The elastic faced bridge according to any one of (1) to (4), wherein the back tooth facing of the elastic faced bridge covers the occlusal surface of the tooth so as to achieve better retention effect.

(6) The elastic veneered bridge according to any one of (1) to (5), wherein the back tooth veneering surface of the elastic veneered bridge does not cover the occlusal surface of the teeth, so that the occlusion function of a patient is realized and the comfort level is better.

(7) The elastomeric veneer bridge according to any one of (1) - (6), wherein the elastomeric veneer bridge covers the teeth at a minimum ranging from the first premolar on one side to the first premolar on the opposite side.

(8) The elastic overlay bridge according to any one of (1) to (7), wherein the coverage of the labial and cervical rims of the elastic overlay bridge is covered to the position of the cervical rims of the teeth.

(9) The elastic overlay bridge according to any one of (1) to (8), wherein the coverage of the labial and cervical rims of the elastic overlay bridge is covered on the gingiva.

(10) The elastic veneer bridge according to any one of (1) to (9), wherein the lingual side of the back dental veneer of the elastic veneer bridge is covered anywhere from the incisal end of the tooth to the cervical rim of the tooth.

(11) The elastic overlay bridge according to any one of (1) to (10), wherein for a tooth site with a missing tooth, the coverage area of the elastic overlay bridge covers the gingiva of the tooth site.

(12) According to any one of the elastic veneering bridges in the items (1) to (11), a gap of 0.1-0.5mm is reserved between the elastic veneering bridge and the teeth, and a whitening agent is filled in the gap to achieve the effect of whitening the teeth.

(13) The elastic overlay bridge according to any one of (1) to (12), which is made of: 3D printing resin, cutting resin, elastic ceramic material or compression molding EVA material.

(14) The elastic overlay bridge according to any one of (1) to (13), the material of the elastic overlay bridge having a flexural strength of between 70 and 200 MPa.

(15) The elastic overlay bridge according to any one of (1) to (14), the material of the elastic overlay bridge having a flexural modulus between 2-12 GPa.

(16) The elastic facing bridge according to any one of (1) to (15), wherein the material of the elastic facing bridge has a Shore D hardness of between 75 ° and 95 °.

(17) The preparation method of the elastic faced bridge is characterized by comprising the following steps:

first, taking an impression of the mouth with alginate or silicone rubber;

secondly, pouring the impression into a plaster model;

thirdly, scanning the plaster model by using an optical scanning device, and converting the plaster model into a digital model;

fourthly, designing the elastic veneered bridge according to the digital model, wherein the steps comprise:

a. designing the veneering shape of each tooth;

b. determining which veneers of teeth need separate positioning directions, which veneers of teeth use uniform positioning directions, and designing a positioning channel of each tooth veneer;

c. filling the undercut of each tooth and arranging the gap between the elastic veneering bridge and the tooth;

d. connecting the veneers of each tooth together to generate an elastic veneering bridge;

fifthly, cutting the elastic material by using cutting equipment according to the designed elastic veneering bridge, and grinding and polishing the cut elastic veneering bridge to obtain a final elastic veneering bridge product.

(18) The method for producing an elastic bridge veneer according to (17), wherein the gap between the elastic bridge veneer and the teeth is 0.01 to 0.5mm.

The elastic veneering bridge and the preparation method thereof provided by the invention have the following beneficial technical effects: the teeth of the patient do not need to be prepared in advance, so that the teeth of the patient cannot be damaged; the elastic veneering bridge veneer is fixed with teeth in a multidirectional elastic cross fixing mode without adhesives and connecting structures, is convenient to take off and wear and does not produce side effects; when the elastic veneering bridge is covered on the teeth, the veneers do not enter the inverted concave parts of the teeth in the positioning direction, and the elastic veneering bridge does not generate stress on the teeth.

The related concept of the present invention is defined as follows:

1. multidirectional elastic cross-fixing mode: the positioning way of at least one veneer in the elastic veneer bridge is different from the positioning ways of other veneers.

2. A positioning way: when the elastomeric veneer bridge is applied to a tooth, the direction of insertion of the veneer into the tooth is called the seating track.

3. And (3) inverted concave: the portion below the maximum peripheral line of the teeth in the veneer seating direction.

4. Anterior facing of elastic bridge facing: when the elastic veneering bridge covers the teeth, the elastic veneering bridge covers the teeth from one canine tooth to the veneer of the opposite canine tooth.

5. Back tooth facing of the elastic facing bridge: it is the veneer of the tooth after covering the cuspid when the elastic veneer bridge covers the tooth.

Drawings

The invention is described in further detail below with reference to the drawings and the detailed description.

FIG. 1 is a schematic view of one overlay being positioned in a different direction than the other overlays;

FIG. 2 is a schematic view of two veneers oriented in a different direction than the other veneers;

FIG. 3 is a schematic view showing different directions of positioning of all the veneers;

FIG. 4 is a simplified schematic illustration of a tooth undercut;

FIG. 5 is a simplified schematic view of an elastic overlay bridge in place;

FIG. 6 is a simplified schematic illustration of dislocation of an elastic faced bridge;

FIG. 7 is a schematic view of the elastic veneering bridge anterior tooth veneer covering the lingual side of the teeth;

FIG. 8 is a schematic view of the elastomeric veneer bridge anterior tooth veneer not covering the lingual side of the teeth;

FIG. 9 is a schematic view of the rear tooth facing of the elastomeric bridge covering the occlusal surface of the tooth;

FIG. 10 is a schematic view of the elastomeric veneers after the bridge leaving the occlusal surfaces of the teeth uncovered;

FIG. 11 is a schematic view of the placement of the labial and cervical bridge with the elastic overlay in place over the teeth;

FIG. 12 is a schematic view of the elastic overlay bridge labial cervical margin overlaid onto the gums;

FIG. 13 is a schematic view of the lingual side of the rear tooth veneers of the flexible veneered bridge covering the position of the cervical margin of the teeth;

FIG. 14 is a schematic view of the lingual side of the veneers of the rear teeth of the elastic veneered bridge covering the 1/2 position of the teeth body,

FIG. 15 is a schematic view of the coverage of the elastic bridge covering the gingiva at the edentulous tooth site;

FIG. 16 is a schematic flow diagram of the preparation of an elastic overlay bridge.

Reference numbers in the figures: 1 is the in-place direction of a single veneer, 2 is the unified in-place direction of the rest teeth, 3 is the teeth, 4 is the undercut, 5 is the elastic veneer bridge, 6 is the dislocation direction of the elastic veneer bridge, 7 is the deformation direction of the elastic veneer bridge, 8 is the tooth neck margin, 9 is the gum, and 10 is the tooth position of the edentulous tooth.

Examples

Example 1:

in the embodiment, one veneering of the elastic veneered bridge is different from other veneering in the positioning direction, as shown in figures 1, 4, 5 and 6, an elastic veneered bridge 5 is formed by connecting veneers to form a bridge body, and each veneering covers one tooth 3 when in use; the elastic veneered bridge 5 is fixed with the teeth 3 in a multidirectional elastic cross fixing mode, wherein the multidirectional elastic cross fixing mode is that the position way of at least one veneer in the elastic veneered bridge is different from the position ways of other veneers, and when the elastic veneered bridge 5 covers the teeth 3, the direction in which the veneer is inserted into the teeth 3 is called the position way; when the elastic veneer bridge 5 is applied to the tooth 3, the veneer does not enter the undercut 4 of the tooth in its seating direction; the undercut 4 refers to a portion below the maximum circumferential line of the teeth in the facing seating direction (as shown in fig. 4). When in use (wearing the elastic veneering bridge), the elastic veneering bridge 5 is inserted into the teeth 3 through the elasticity of the material, and fig. 5 is a schematic diagram of the elastic veneering bridge in place. As shown in figure 6, when the elastic veneering bridge 5 is dislocated, the elastic veneering bridge 5 deforms, and the veneers can clamp the teeth 3 due to different positioning directions of the veneers, so that the elastic veneering bridge 5 cannot spontaneously fall off from the teeth 3, and the firmness of the elastic veneering bridge 5 is ensured. The veneers do not enter the inverted concave 4 of the teeth in the independent in-place direction of the veneers, so that the elastic veneers can not generate stress to the teeth when being worn in the mouth, and the effect of protecting the teeth is achieved.

As shown in fig. 7, the front facing of the elastic faced bridge 5 may cover the lingual side of the teeth for better retention. As shown in fig. 8, the front facing of the flexible bridge 5 may not cover the lingual side of the teeth, so as to achieve the occlusion function and better comfort for the patient.

As shown in FIG. 9, the rear tooth facing of the elastic bridge 5 can cover the occlusal surface of the tooth to achieve better retention; as shown in fig. 10, the rear tooth paste of the elastic veneering bridge 5 can also not cover the occlusal surface of the teeth, so that the occlusion function of the patient is realized and the comfort is better.

The elastic veneer bridge covers the teeth ranging from a minimum of one side of the first premolar to the opposite side of the first premolar.

As shown in fig. 11, the coverage of the labial and cervical rims of the elastic veneering bridge 3 can be covered to the position of the cervical rims 8 of the teeth. As shown in fig. 12, the coverage of the labial and cervical rims of the elastic veneer bridge 5 can be covered on the gingiva 9 according to the form of the cervical rims of the teeth.

The coverage range of the lingual side of the rear tooth veneers of the elastic veneers bridge can be covered from the incisal ends of the teeth to any position of the cervical margin of the teeth, wherein as shown in figure 13, the lingual side of the rear tooth veneers of the elastic veneers bridge 5 is covered to the position of the cervical margin of the teeth 8, and as shown in figure 14, the lingual side of the rear tooth veneers of the elastic veneers bridge is covered to the position of 1/2 of the tooth body of the teeth 3.

As shown in FIG. 15, the elastic bridge 5 covers the gingiva of the edentulous tooth site 10.

A gap of 0.1-0.5mm can be reserved between the elastic veneering bridge and the teeth, and a whitening agent can be filled in the gap to achieve the effect of whitening the teeth, wherein the elastic veneering bridge is made of the following materials: 3D printing resin; cutting the resin and the elastic porcelain material; compression molding of EVA material, etc.; the bending strength of the material of the elastic veneering bridge is 70-200MPa, the bending modulus is 2-12GPa, and the Shore D hardness is 75-95 degrees.

Example 2:

as shown in FIG. 2, the two facing surfaces of the elastic bridge facing are in different positions and the other structures are the same as those of the elastic bridge facing in example 1.

Example 3:

as shown in fig. 3, the elastic facing bridge of this embodiment has different directions of all facing positions, and the other structure is the same as that of embodiment 1.

Example 4:

as shown in fig. 16, a method for preparing an elastic overlay bridge comprises the following steps:

first, taking an oral impression with alginate or silicone rubber;

secondly, pouring the impression into a plaster model;

a. designing the veneering shape of each tooth;

c. filling the undercut of each tooth and arranging a gap between the elastic veneering bridge and the tooth body, wherein the gap can be 0.01-0.5mm;

When in use, a user can directly wear the elastic veneering bridge.

The invention can be applied in the following scenarios: the user of the elastic veneering bridge can be a non-oral professional, the user prepares an intraoral impression and sends the intraoral impression to the processing center, the processing center sends the elastic veneering bridge to the user after completing the preparation process, and the user can realize the whitening function or repair the appearance of the intraoral missing teeth by wearing the elastic veneering bridge; the user of the elastic veneering bridge can also be a patient in an oral clinic, a doctor prepares an intraoral impression for the patient and sends the intraoral impression to the machining center, the machining center sends the elastic veneering bridge to the doctor after finishing the preparation process, and the doctor can preview the final repair appearance of the patient by wearing the elastic veneering bridge for the patient.

The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.

This written description uses examples to illustrate the invention, including the best mode, and also to enable any person skilled in the art to make and use the invention. The patentable scope of the invention includes the contents of the claims, and the contents of the detailed description and other examples that follow within the specification. Such other examples should also fall within the scope of the claims, provided they contain the technical features described in the same written language as the claims, or they contain technical features described in a similar literal language with no essential difference from the claims.

All patents, patent applications, and other references cited herein are incorporated by reference in their entirety. However, if a term in the present application conflicts with a term in the incorporated reference, the term from the present application takes precedence.

It should be noted that the terms "first," "second," and the like do not denote any order, quality, or importance, but rather are used to distinguish one technical feature from another. The modifier "about" used in connection with a quantity is inclusive of the stated value and the meaning dictated by the context. (e.g., it contains errors in measuring a particular quantity).

Claims

1. An elastic faced bridge, its characterized in that: all veneers are mutually connected to form a bridge body, and each veneer covers one tooth when in use; the elastic veneered bridge is fixed with teeth in a multidirectional elastic cross fixing mode without adhesives, wherein the multidirectional elastic cross fixing mode is that the position way of at least one veneer in the elastic veneered bridge is different from the position ways of other veneers; when the elastic veneered bridge is covered on the teeth, the direction of the veneering inserted into the teeth is called a emplacement path; when the elastic veneer bridge is overlaid on the teeth, the veneer does not enter the inverted concave of the teeth in the locating direction of the veneer; the undercut means a portion below the maximum peripheral line of the teeth in the facing seating direction; the elastic veneer bridge covers the teeth in a minimum range from a first premolar on one side to a first premolar on the opposite side;

the elastic veneering bridge is made of the following materials: 3D printing resin, cutting resin, elastic ceramic material or compression molding EVA material; the bending strength of the material of the elastic veneering bridge is 70-200MPa, the bending modulus is 2-12GPa, and the Shore D hardness is 75-95 degrees.

2. The elastic faced bridge of claim 1, wherein: the positioning paths of all veneers in the elastic veneered bridge are different.

3. The elastic faced bridge of claim 1, wherein: the front tooth veneer of the elastic veneer bridge covers the lingual side of the teeth.

4. The elastic faced bridge of claim 1, wherein: the anterior facing of the elastic veneer bridge does not cover the lingual side of the teeth.

5. The elastic faced bridge of claim 1, wherein: the back tooth veneer of the elastic veneer bridge covers the occlusal surface of the tooth.

6. The elastic faced bridge of claim 1, wherein: the back tooth veneer of the elastic veneer bridge does not cover the occlusal surface of the tooth.

7. The elastic faced bridge of claim 1, wherein: the coverage range of the labial and labial neck edges of the elastic veneers covers the position of the neck edges of the teeth or the coverage range of the labial and labial neck edges of the elastic veneers covers the gingiva.

8. The elastic faced bridge of claim 1, wherein: the coverage range of the lingual side of the elastic veneers after the bridge is any position from the incisal ends of the teeth to the cervical margin of the teeth.

9. The elastic faced bridge of claim 1, wherein: for a tooth site with a missing tooth, the coverage of the elastic bridge covers the gums of the tooth site.

10. An elastic faced bridge according to any one of claims 1 to 9, wherein: a gap of 0.1-0.5mm is reserved between the elastic veneering bridge and the teeth, and the whitening agent is filled in the gap.

11. The preparation method of the elastic faced bridge is characterized by comprising the following steps:

first, taking an impression of the mouth with alginate or silicone rubber;

secondly, pouring the impression into a plaster model;

fourthly, designing the elastic veneering bridge according to the digital model, wherein the steps comprise:

a. designing the veneering shape of each tooth;

b. determining which veneers of teeth need to be in the independent positioning direction, which veneers of teeth use the uniform positioning direction, designing a positioning channel of each tooth veneer, and fixing the elastic veneer bridge with the teeth in a multidirectional elastic cross fixing mode without adhesives;

c. filling the inverted concave of each tooth and arranging a gap between the elastic veneering bridge and the tooth;

12. The method of making an elastic overlay bridge according to claim 11 wherein: the gap between the elastic veneering bridge and the teeth is 0.01-0.5mm.