CN211381869U

CN211381869U - Split type porcelain crown

Info

Publication number: CN211381869U
Application number: CN201922042291.1U
Authority: CN
Inventors: 卢志国; 柏平; 余怀涛
Original assignee: Chongqing Haochi Denture Manufacturing Co ltd
Current assignee: Chongqing Haochi Denture Manufacturing Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-09-01
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to an artificial tooth preparation technical field specifically discloses split type porcelain crown, including the dental corona that has inside cavity, be equipped with the undercut ring in the dental corona, the undercut ring bonds on patient's dental pile, the dental corona bonds in the undercut ring outside, the undercut ring includes inner wall and outer wall, the inner wall and the patient's dental pile shape of undercut ring match, the outer wall of the undercut ring matches with the shape of dental corona inner wall. Adopt the technical scheme in this patent, when the installation is dental crown, at first the installation falls the concave ring on patient's dental pile, makes the concave region that falls of patient's dental pile is filled to the ring that falls, and dental crown bonds after the outside of the ring that falls concave like this, and the unsettled reduction with great between dental crown and the ring that falls concave has improved the life of dental crown.

Description

Split type porcelain crown

Technical Field

The utility model relates to an artificial tooth preparation technical field, in particular to split type porcelain crown.

Background

The denture is what is commonly referred to as "denture" which means "dental work" for the human being. The medical science is a general term for restorations made after partial or all teeth of the upper and lower jaws are lost. The artificial tooth is divided into removable type and fixed type. Fixed dentures (commonly known as "fixed dentures") are not worn by the patient himself, while removable dentures (commonly known as "removable dentures") are worn by the patient easily.

For the repair of partial tooth loss of a patient, a crown is usually installed on a dental post (after the tooth loss part), for the convenience of manufacture, the shape of a cavity inside the crown is usually certain, so that for dental posts of different shapes, the shapes of the undercut regions formed by the dental posts are also different, and after the crown is installed, the undercut regions between the crown and the dental post are not filled, so that the crown and the dental post are suspended, and the service life of the crown is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a split type porcelain crown to solve among the prior art unsettled between dental crown and the dental pile, the problem that dental crown life descends.

In order to achieve the above purpose, the technical scheme of the utility model is that:

split type porcelain crown, including the dental crown that has inside cavity, be equipped with the ring of falling the concave in the dental crown, the ring of falling the concave bonds on patient's dental pillar, the dental crown bonds in the ring outside of falling the concave, the ring of falling the concave includes inner wall and outer wall, the inner wall and the patient's dental pillar shape of the ring of falling the concave match, the outer wall of the ring of falling the concave matches with the shape of dental crown inner wall.

The technical principle and the effect of the technical scheme are as follows:

adopt this technical scheme, when the installation is dental crown, at first the installation falls the concave ring on patient's dental pile, makes the falling concave zone that falls the concave ring and pack patient's dental pile, and dental crown bonds after the outside of falling the concave ring like this, and the unsettled reduction with great between dental crown and the falling concave ring has improved dental crown's life.

Further, the wall thickness of the dental crown is not less than 0.8 mm.

Has the advantages that: the use time of the dental crown is limited if the thickness of the dental crown is too thin, so that the thickness of the dental crown is controlled to be not less than 0.8mm when the dental crown is prepared.

Further, the top of the inverted concave ring is provided with an opening.

Has the advantages that: the opening is arranged to facilitate the dentist to feed the adhesive into the inverted concave ring from the opening.

Furthermore, a gap is formed between the outer wall of the inverted concave ring and the inner wall of the dental crown, and the width of the gap is 0.2-0.5 mm.

Has the advantages that: the gap is arranged to facilitate the adhesive to enter into the gap so as to bond the inverted concave ring and the dental crown together.

Furthermore, the outer wall of the inverted concave ring is provided with a spiral groove.

Has the advantages that: the spiral groove is convenient for the adhesive to flow along the spiral groove, and meanwhile, the bonding stability between the undercut ring and the dental crown is enhanced.

Furthermore, the inner wall of the dental crown is provided with a spiral bulge.

Has the advantages that: the spiral bulge is arranged to improve the bonding stability between the undercut ring and the dental crown.

Furthermore, the spiral protrusion is matched with the spiral groove in shape, and gaps are formed between each surface of the spiral protrusion and the side wall of the spiral groove.

Has the advantages that: the arrangement not only further improves the connection performance between the undercut ring and the dental crown, but also facilitates the flowing of the adhesive.

Furthermore, a filling body is arranged between the top of the inverted concave ring and the dental crown.

Has the advantages that: since it is difficult for the adhesive to completely fill the gap between the crown of the inverted concave ring and the crown when bonding the crown of the dental crown to the inverted concave ring, the gap between the crown of the dental crown and the inverted concave ring can be minimized by providing the filling body.

Further, the filling body comprises an elastic bag fixed on the dental crown, a bottom plate matched with the shape of the top of the inverted concave ring is arranged at the bottom of the elastic bag, and a discharge hole is formed in the outer wall of the elastic bag.

Has the advantages that: set up the dentist like this and inject the adhesive to the elastic bag in through the cylinder, when the dental crown cover was on the undercut ring, the elastic bag received the extrusion, and the adhesive in the elastic bag flows from the discharge hole under the extrusion, along the outer wall and the helicla flute flow of undercut ring, makes the undercut ring can bond more firmly with the dental crown.

Further, the discharge holes are arranged in a plurality of numbers and are evenly distributed along the circumferential direction of the elastic bag.

Has the advantages that: thus, when the elastic bag is extruded, the adhesive in the elastic bag can flow out from the discharge holes on the periphery, so that the dental crown and the undercut ring can be well adhered together.

Drawings

Fig. 1 is a partial sectional view of embodiment 1 of the present invention;

fig. 2 is a partial sectional view of embodiment 2 of the present invention;

fig. 3 is a partial sectional view of embodiment 3 of the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: a crown 10, an undercut ring 11, a stump 12, a gap 13, a spiral groove 20, a spiral protrusion 21, an elastic capsule 30, a bottom plate 31, a discharge hole 32, a spring 33.

Example 1 is substantially as shown in figure 1:

a split-type porcelain crown comprises a dental crown 10 with an internal cavity, the wall thickness of the dental crown 10 is not less than 0.8mm, the external appearance of the dental crown 10 is manufactured according to the demoulding of the patient, the dental crown 10 is formed by sintering zirconia, a reverse concave ring 11 is arranged in the dental crown 10, wherein the inverted concave ring 11 is adhered on the dental pile 12 of the patient by adopting an adhesive, the dental pile 12 is the damaged tooth which needs to be repaired by the patient, wherein the inverted concave ring 11 comprises an inner wall, an outer wall and an opening at the top, the inverted concave ring 11 is also sintered by zirconia, the inner wall of the inverted concave ring 11 is matched with the dental pile 12 of a patient to be repaired in shape, and the outer wall of the undercut ring 11 matches the shape of the inner wall of the crown 10, typically a cylinder with an oval cross-section, in addition, a gap 13 is formed between the inner wall of the dental crown 10 and the undercut ring 11, the width of the gap 13 is 0.2-0.5 mm, and the dental crown 10 and the undercut ring 11 are bonded through an adhesive.

When a plurality of dental stumps 12 to be repaired are adjacent, a plurality of dental crowns 10 can be integrally sintered by using a bridge body.

When repairing the teeth of a patient, a dentist firstly bonds the inverted concave ring 11 on the dental post 12 of the patient, so that the inverted concave region of the dental post 12 is filled with the inverted concave ring 11, and then bonds the dental crown 10 on the outer part of the inverted concave ring 11.

Example 2 is substantially as shown in figure 2:

the difference from example 1 is that: the outer wall of the inverted concave ring 11 is provided with a spiral groove 20, wherein the included angle between the spiral groove 20 and the horizontal plane is 45-60 degrees, a spiral protrusion 21 is integrally formed on the inner wall of the dental crown 10, the shape of the spiral protrusion 21 is matched with that of the annular groove, a part of the spiral protrusion 21 is positioned in the annular groove, and gaps are formed between each surface of the spiral protrusion 21 and the side wall of the annular groove.

Example 3 is substantially as shown in figures 3 and 4:

the difference from example 2 is that: the filling body is arranged between the top of the undercut ring 11 and the dental crown 10 and comprises an elastic bag 30 which is stuck in the dental crown 10, a bottom plate 31 which is matched with the shape of the top of the undercut ring 11 is arranged at the bottom of the elastic bag 30, a plurality of discharge holes 32 are arranged on the outer wall of the elastic bag 30, the discharge holes 32 are uniformly distributed along the circumferential direction of the elastic bag 30, and a spring 33 is vertically fixed in the elastic bag 30.

When the dental crown is used, a dentist injects the adhesive into the elastic bag 30 through the syringe, when the dental crown 10 is sleeved on the undercut ring 11, the elastic bag 30 is extruded, the adhesive in the elastic bag 30 flows out from the discharge holes 32 at the periphery under the extrusion effect, and flows along the outer wall of the undercut ring 11 and the spiral groove 20, so that the undercut ring 11 can be bonded with the dental crown 10 more firmly.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Split type porcelain hat, its characterized in that: including the dental crown that has inside cavity, be equipped with the ring of falling the concave in the dental crown, the ring of falling the concave bonds on patient's dental pile, the dental crown bonds in the ring outside of falling the concave, the ring of falling the concave includes inner wall and outer wall, the inner wall of the ring of falling the concave matches with patient's dental pile shape, the outer wall of the ring of falling the concave matches with the shape of dental crown inner wall.

2. The split porcelain crown of claim 1, wherein: the wall thickness of the dental crown is not less than 0.8 mm.

3. The split porcelain crown of claim 1, wherein: the top of the inverted concave ring is provided with an opening.

4. The split porcelain crown of claim 1, wherein: a gap is formed between the outer wall of the inverted concave ring and the inner wall of the dental crown, and the width of the gap is 0.2-0.5 mm.

5. The split porcelain crown of claim 1, wherein: the outer wall of the inverted concave ring is provided with a spiral groove.

6. The split porcelain crown of claim 5, wherein: the inner wall of the dental crown is provided with a spiral bulge.

7. The split porcelain crown of claim 6, wherein: the spiral bulge is matched with the spiral groove in shape, and gaps are formed between each surface of the spiral bulge and the side wall of the spiral groove.

8. The split porcelain crown of claim 1, wherein: and a filling body is arranged between the top of the inverted concave ring and the dental crown.

9. The split porcelain crown of claim 8, wherein: the filling body comprises an elastic bag fixed on the dental crown, a bottom plate matched with the shape of the top of the inverted concave ring is arranged at the bottom of the elastic bag, and a discharge hole is formed in the outer wall of the elastic bag.

10. The split porcelain crown of claim 9, wherein: the discharge holes are arranged in plurality and are uniformly distributed along the circumferential direction of the elastic bag.