CN203943751U - Open facial pre-capping - Google Patents

Abstract

A kind ofly open facial pre-capping, comprise that hat week and hat close face, it is one-body molded that described hat week and hat close face, hat closes face and is positioned at hat Zhou Shangduan, and described hat closes face and is provided with opening, and described opening is positioned at hat and closes face central authorities, described hat week is coated external teeth, the all lower edge of described hat are ecto-entad recess, and described hat closes face and is the horizontal recess of ecto-entad, and described edge of opening and occlusal surfaces of teeth match.This utility model can make to suffer from tooth repair process one step and complete; be that bad tooth of dental caries is after the bad tissue of dental caries is removed; the facial pre-capping of directly trying on and bond out; then from opening part filling filler to form occlusal surface; avoid producing the high point of interlock; and without the healthy tissue of tooth of a worn part, in tape entry, rear foreign body sensation is little, more comfortable.

Description

Open face prefabricated crown

technical field

The utility model relates to the technical field of oral restoration, in particular to an open-face prefabricated crown.

Background technique

Dental diseases such as dental caries or pulpitis are common cases in oral diagnosis and treatment. The treatment of dental caries generally adopts filling treatment, and materials such as resin or glass ion are often used to restore the shape of the tooth. Pulpitis needs to be treated after root canal treatment. Restoring the shape of the tooth through filling treatment. After dental treatment, the affected teeth often have defects such as poor retention of fillings, easy to fall off, increased brittleness of the tooth, and easy fracture. Therefore, follow-up permanent restoration treatment, such as casting crowns or porcelain crowns, is required. Similar dental treatment is also used for caries and pulpitis of children's deciduous teeth. Since children's deciduous teeth will fall out and be replaced during the period of 6-13 years old, and the process of permanent restoration is complicated and expensive, so the deciduous teeth are generally filled after treatment. , no more permanent fixes. However, a considerable part of the deciduous teeth after treatment will last in the child's mouth for a long time. In order to avoid the occurrence of the deciduous fillings falling off or tooth fracture after treatment, it is still necessary to carry out transitional restoration.

The existing method of restoring deciduous teeth is to use prefabricated crown technology. Prefabricated crown refers to a prefabricated metal crown, which imitates the shape of deciduous teeth and is more beautiful. The existing prefabricated crown technology is relatively cumbersome to operate, and it is necessary to restore the shape of the tooth with a filling body first, and then the prefabricated crown can be repaired. In order to restore the shape of deciduous teeth, the prefabricated crown needs to have a certain thickness, which makes it difficult to adapt the shape of the prefabricated crown to individual teeth, which loses the meaning of "prefabricated". The prefabricated crown has a certain thickness, so that part of the healthy tooth tissue (especially the adjacent surface of the tooth) has to be ground away when the crown is worn, which violates the principle of retaining healthy tooth tissue as much as possible in dental restoration. Traditional prefabricated crowns have the following disadvantages in clinical application: 1. In order to form the shape of the imitated deciduous teeth, the prefabricated crown generally needs to have a certain thickness to ensure the strength, which makes its shape fixed, difficult to adjust, and difficult to adapt to various shapes of teeth, and the adjacent surface of the prefabricated crown has a certain thickness , making it necessary to grind away part of the tooth tissue when wearing the teeth, and at the same time, the shape of the preformed occlusal surface is difficult to change, and it is easy to form occlusal high points and cause occlusal trauma; 2. Although the prefabricated crown can imitate the shape of the cusp of the deciduous teeth, the shape of the prefabricated crown is designed to be closed, and it is impossible to intuitively observe the degree of fit between the edge of the prefabricated crown and the shape of the tooth, causing doctors to choose the size and model of the prefabricated crown and try it Difficulties when preforming crowns.

Contents of the invention

The purpose of this utility model is to provide an open-faced prefabricated crown, which can complete the restoration process of the affected tooth in one step, that is, after the carious tooth is removed, the open-faced prefabricated crown can be directly tried on and bonded, and then The filling material is filled from the opening to form an occlusal surface, avoiding occlusal high points, and there is no need to grind away a part of healthy tooth tissue, and the foreign body sensation is small after being brought into the mouth, which is more comfortable.

In order to achieve the above purpose, an open-faced prefabricated crown designed by the utility model includes a coronal circumference and a coronal joint surface. The coronal surface is provided with an opening, and the opening is located in the center of the coronal surface.

In the above technical solution, the pericoronal covers the outside of the tooth.

In the above technical solution, the lower edge of the coronal circumference is concave from outside to inside.

In the above technical solution, the coronal surface is horizontally concave from outside to inside.

In the above technical solution, the edge of the opening coincides with the occlusal surface of the teeth.

In the above technical solution, the pericoronal sidewall is provided with an opening, and the opening penetrates the lower end edge of the coronal circumference.

Further, the openings are arranged symmetrically in the middle of the two side walls around the crown. The edge of the opening coincides with the adjacent surface of the tooth.

In the above technical solution, the crown circumference and the coronal surface are made of stainless steel.

In the above technical solution, the coronal wall of the pericoronal labial and lingual surface is slightly thicker, and the mesial and distal proximal surfaces are slightly thinner. The lower edge of the coronal circumference is heat-treated.

The beneficial effects of the utility model are:

1. The restoration process of the affected tooth can be completed in one step, that is, after the carious tooth is removed, the carious tooth can be directly tried on and glued to the utility model, and then the filling material can be filled from the opening to form an occlusal surface to avoid occlusal high points;

2. It does not emphasize imitating the shape of deciduous teeth, the thickness of the crown is thinner, and the heat treatment of the periphery of the crown is increased, which is convenient for adjusting the shape of the crown, and there is no need to grind away the tooth tissue or prepare teeth, and it can be tried under direct vision, which is convenient for the selection of the model size;

3. The coronal surface can embrace and retain the affected tooth, and can also prevent the utility model from sinking and prevent periodontal damage;

4. Small size, thin thickness, less foreign body sensation after being brought into the mouth, more comfortable, convenient for industrial standardized production, low cost, can reduce treatment costs, simple clinical operation, convenient for clinical promotion and use.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the structural representation of the second embodiment of the utility model;

In the figure: 1—coronal circumference, 2—coronal joint surface, 3—lower edge of crown circumference, 4—opening, 5—opening hole.

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in further detail:

Embodiment one:

As shown in Figure 1, an open-faced prefabricated crown includes a coronal circumference 1 and a coronal joint surface 2, the coronal circumference 1 and the coronal joint plane 2 are integrally formed, and the coronal joint plane 2 is located at the upper end of the coronal circumference 1. The coronal surface 2 is provided with an opening 4 located in the center of the coronal surface 2 . The pericoronal 1 covers the outside of the tooth. The lower end edge 3 of the coronal circumference is concave from outside to inside. The coronal surface 2 is horizontally concave from outside to inside. The edge of the opening 4 coincides with the occlusal surface of the teeth. The coronal circumference 1 and the coronal joint surface 2 are made of stainless steel. The labial-lingual surface of the coronal circumference 1 is slightly thicker, and the mesio-distal proximal surface is slightly thinner. The lower end edge 3 around the crown is heat-treated. The coronal surface 2 is provided with an opening 4, which can complete the restoration process of the affected tooth in one step, that is, after the carious tooth is removed, the utility model is directly tried on and bonded, and then the filling material is filled from the opening 4 to form an occlusion just face. Because it is difficult to adjust the occlusal height of the preformed occlusal surface of the preformed crown, it is easy to cause early occlusal contact and occlusal trauma. However, the design of the opening 4 of the utility model has no occlusal surface, and only filling materials can be used to restore the occlusal surface to avoid The occurrence of the bite high point. The coronal surface 2 is horizontally concave from the outside to the inside, which plays a role of encircling and retaining the affected tooth, and can also prevent the pericoronal 1 from sinking and causing periodontal damage. The utility model does not imitate the shape of deciduous teeth, so the thickness of the coronal circumference 1 is relatively thin, and the lower end edge 3 of the coronal circumference is heat-treated to facilitate the adjustment of the shape of the coronal circumference 1, and there is no need to grind away tooth tissue or prepare teeth, and it can be tried under direct vision The utility model is convenient for selecting the model size of the utility model. Increasing the thickness of the labial and lingual surface around the crown and reducing the thickness of the mesial and distal adjacent surfaces can enhance the strength of the utility model without affecting its insertion into place.

Embodiment two:

The second embodiment is basically the same as the first embodiment, except that the shape of the coronal circumference 1 is different from that of the first embodiment. As shown in FIG. 2 , an opening 5 is provided on the side wall of the coronal circumference 1 , and the opening 5 penetrates the lower end edge 3 of the coronal circumference. The openings 5 are symmetrically arranged in the middle of the two side walls of the coronal circumference 1 . The edge of the opening 5 coincides with the adjacent surface of the teeth. The design of the opening 5 can avoid the adjoining points of the adjacent teeth. When using the utility model, it is not necessary to grind away the adjacent surfaces of the teeth which are too tight at the adjoining points, thus avoiding the damage of the tooth body.

The use principle of the utility model is:

When using, first select an open-faced prefabricated crown suitable for the size of the restored tooth, remove it after trying it on the restored tooth, and use special forceps and medical burs to adjust and polish the shape of the crown circumference 1 and the lower edge 3 of the crown circumference. The utility model is bonded and fixed on the restored tooth. After being bonded and fixed, the filling material is filled into the restored tooth from the opening 4, compacted, and the shape of the occlusal surface is formed. The above-mentioned tools for adjusting the shape of the crown circumference 1 can be special pliers (trippers with rings), needle holders, technician pliers, etc.

The utility model can be designed with different models according to the different tooth sizes to meet the needs of different tooth sizes.

The utility model disclosed is a preferred embodiment, but it is not limited thereto. Those skilled in the art can easily replace or modify it according to the above embodiment, and the scope of rights of the utility model cannot be limited by this. Therefore, equivalent changes made according to the scope of the utility model still belong to the protection scope of the utility model.

Claims (9)

1. open facial pre-capping for one kind, it is characterized in that: comprise that hat week (1) and hat close face (2), it is one-body molded that described hat week (1) and hat close face (2), hat closes face (2) and is positioned at hat week (1) upper end, described hat closes face (2) and is provided with opening (4), and described opening (4) is positioned at Guan Hemian (2) central authorities.

2. as claimed in claim 1ly open facial pre-capping, it is characterized in that: described hat week (1) coated external teeth.

3. as claimed in claim 1ly open facial pre-capping, it is characterized in that: all lower edge of described hat (3) are ecto-entad recess.

4. as claimed in claim 1ly open facial pre-capping, it is characterized in that: described hat closes face (2) and is the horizontal recess of ecto-entad.

5. as claimed in claim 1ly open facial pre-capping, it is characterized in that: described opening (4) edge and occlusal surfaces of teeth match.

6. as claimed in claim 1ly open facial pre-capping, it is characterized in that: described hat week (1) sidewall be provided with perforate (5), described perforate (5) penetrates hat all lower edge (3).

7. as claimed in claim 6ly open facial pre-capping, it is characterized in that: described perforate (5) is symmetricly set in middle part, hat week (1) two side.

8. as claimed in claim 7ly open facial pre-capping, it is characterized in that: described perforate (5) edge and interproximal tooth coating match.

9. as claimed in claim 1ly open facial pre-capping, it is characterized in that: it is stainless steel that described hat week (1) and hat close face (2).