CN209996503U

CN209996503U - Sleeve crown

Info

Publication number: CN209996503U
Application number: CN201920301490.7U
Authority: CN
Inventors: 王希奇
Original assignee: Beijing Guanmei Dental Management Co Ltd
Current assignee: Beijing Guanmei Dental Management Co Ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-01-31
Anticipated expiration: 2029-03-08

Abstract

The utility model provides a kind of sleeve crown has solved among the prior art because the periodontal supports the tissue condition slightly poor, and the too big problem of pressure that the basal tooth bore when stinging the embodiment of the utility model provides a sleeve crown, establish including inner crown and cover the outer crown of inner crown lateral wall, the top of inner crown with form clearances between the outer crown, the embodiment of the utility model provides a sleeve crown through the top of inner crown with form clearances between the outer crown and provide the buffer power of interlock, the pressure that the basal tooth bore when the dispersion stings to not only effectual basal tooth of having protected still avoids the damage of periodontal membrane.

Description

Sleeve crown

Technical Field

The utility model relates to an oral treatment technical field, concretely relates to kinds of sleeve crowns.

Background

The coping is kinds of fixed-movable combined prosthesis, and the coping is formed by manufacturing a double-layer crown with high tightness, adhering an inner layer crown on an abutment, placing an outer layer crown in a false tooth, and fixing the false tooth through friction force generated by tightness between the inner and outer crowns, but for teeth with slightly poor periodontal support tissue conditions, definite occlusion pressure is generated on the abutment due to close tightness between the inner crown and the outer crown during occlusion.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to providing kinds of socket crowns, so as to solve the problem of the prior art that the abutment is subjected to excessive pressure during occlusion due to the slightly poor condition of the periodontal support tissue.

The utility model discloses aspect provides kinds of sleeve crowns, establish the outer hat at interior hat lateral wall including interior hat and cover, form the clearance between the top of interior hat and the outer hat.

In embodiments, the height of the gap is 0.2mm to 0.5 mm.

In embodiments, the height of the gap is preferably 0.3 mm.

In embodiments, the gap is filled with air.

In embodiments, the material of the inner crown comprises any of cobalt chrome, cast porcelain, pure titanium and zirconia, and the material of the outer crown comprises any of pure titanium and gold deposits.

In embodiments, the inner crown is made of cobalt-chromium alloy and the outer crown is made of pure titanium, or the inner crown is made of cast porcelain and the outer crown is made of gold deposition, or the inner crown is made of zirconia and the outer crown is made of gold deposition.

In examples, the angle of cohesion of the coping was 2-8 °.

In embodiments, the preferred cohesion angle of the coping is 6 °.

The embodiment of the utility model provides an kinds of sleeve crowns, through form clearance between the top of inner crown and outer crown and provide the buffer power of interlock, the pressure that the abutment bore when the dispersion was occluded to not only effectual protection abutment, still avoid the damage of periodontal membrane.

Drawings

Fig. 1 is a schematic structural view of embodiments of the present invention.

Fig. 2 is a schematic structural view of another embodiments of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only partial embodiments of , but not all embodiments.

Fig. 1 shows the structural schematic diagram of the embodiments of the present invention, as shown in fig. 1, the crown includes a crown 1 and an outer crown 2 sleeved on the outer sidewall of the crown, a gap 3 is formed between the top a of the crown 1 and the outer crown, it should be understood that the top of the crown 1 is the position of a shown in fig. 1, when the crown 1 and the outer crown 2 are completely sleeved, a gap 3 may exist between the top a of the crown 1 and the outer crown 2, and the gap 3 may provide the buffering force for occlusion, effectively dispersing the pressure borne by the abutment, thereby not only effectively protecting the abutment, but also avoiding the damage of the periodontal ligament.

In the embodiments of the present invention, the height of the gap 3 is 0.2mm-0.5mm, it should be understood that, in order to provide the buffering power during occlusion, the gap 3 between the top a of the inner crown 1 and the outer crown 2 is adjusted according to the elasticity of the mucous membrane of the patient provided by the clinician, the height of the gap 3 can be set to any values in 0.2mm-0.5mm, i.e. to discrete values such as 0.2mm, 0.3mm, 0.4mm and 0.5mm, if the height of the gap 3 is greater than 0.5mm, the too large gap makes the taking off of the sleeve crown more difficult, thereby reducing the user experience, if the height of the gap 3 is less than 0.2mm, the too small gap cannot provide the buffering power for occlusion, and the pressure born by the basal seat cannot be dispersed, thereby failing to achieve the buffering effect.

The utility model discloses an embodiments, it is preferred, the height of clearance 3 is 0.3 mm. it should be understood that the height setting of clearance 3 both can satisfy easily taking and plucking, can satisfy again and provide sufficient cushion force to not only improved user's experience, can also disperse the pressure that the abutment bore to 0.3 mm.

The utility model discloses an embodiments, clearance 3 intussuseption is filled with the air it should be understood, clearance 3 can fill the air, can also fill other materials that can play the cushioning effect, the embodiment of the utility model provides a do not specifically limit to the kind of the filler in clearance 3.

In embodiments of the present invention, the material of the inner crown 1 includes any of cobalt-chromium alloy, cast porcelain, pure titanium and zirconia, and the material of the outer crown 2 includes any of pure titanium and gold deposition, it should be noted that the material of the inner crown 1 may be any of cobalt-chromium alloy, cast porcelain, pure titanium and zirconia, or may be other materials, the embodiment of the present invention does not specifically limit the material of the inner crown 1, and the material of the outer crown 2 may be pure titanium or gold deposition, or may be other materials, the embodiment of the present invention does not specifically limit the material of the outer crown 2.

In embodiments of the present invention, the inner crown 1 is made of cobalt-chromium alloy, the outer crown 2 is made of pure titanium, or the inner crown 1 is made of cast porcelain, and the outer crown 2 is made of gold deposition, or the inner crown 1 is made of zirconia, and the outer crown 2 is made of gold deposition.

Cobalt chromium alloys have good biocompatibility, are practical and economical, but have poor transmission to sunlight; pure titanium has the following advantages: the heat conduction is extremely low, the heat conduction has no stimulation to living pulp teeth, the strength is high, the heat conduction is semi-resistant to X rays, and the biocompatibility and the corrosion resistance are excellent, but the combination of the heat conduction and a ceramic layer is not good, and the porcelain is easy to break when the chewing force is too large; gold deposition has the following advantages: the gold-ceramic composite material has excellent biocompatibility, super-strong binding force of gold and ceramic, soft color and no black shadow refraction, can be used for nuclear magnetic resonance and other examinations, and has high wear resistance and high tightness with an inner crown; the cast porcelain has the following advantages: excellent biocompatibility, ideal light permeability and perfect cosmetic effect, but the hardness of the artificial tooth is not as good as that of zirconia, so that the artificial tooth is not suitable for the design of a posterior tooth fixed bridge false tooth; zirconia has the following advantages: high light transmission, high strength and optimal aesthetic effect, but at a relatively high cost.

It follows that the above mentioned combinations of different materials of the inner crown 1 and of different materials of the outer crown 2 are classified according to the grade of the collet crown. Firstly, the inner crown 1 is made of cobalt-chromium alloy and the outer crown 2 is made of pure titanium, belonging to a low-grade sleeve crown; secondly, the inner crown 1 is made of cast porcelain and the outer crown 2 is made of a sleeve crown with gold deposition belonging to a middle grade; finally, the material of the inner crown 1 is zirconia and the material of the outer crown 2 is gold deposit belonging to the high-grade socket crown. It should be noted that the embodiments of the present invention do not limit the combination of the inner crown 1 of any material with the outer crown 2 of any material, and the low, medium and high grade sleeve crowns mentioned here are matched according to the requirements of the patient.

Fig. 2 shows a schematic structural diagram of another embodiment of the present invention, according to the present invention, , the internal crown 1 has an internal angle α of 2 ° -8 °, it should be understood that the internal angle α of the internal crown 1 is an angle α between the straight line B and the straight line C shown in fig. 2, in order to improve the user's experience, the internal angle α may be set to any values of 2 ° -8 °, i.e., may be set to discrete values such as 2 °, 4 °, 6 °, and 8 °, if the internal angle α is greater than 8 °, the retention force may be reduced, so that a good retention effect may not be achieved, and after a long-term use, the internal crown 1 may be separated from the external crown 2, and if the internal angle α is less than 2 °, although a good retention effect may be achieved, the user's experience may be reduced, so that the user may be difficult to pick.

It should be noted that the embodiment of the present invention does not limit the size of the cohesive angle α, as long as it is easy to pick and pick, and achieve a good retention effect, and meanwhile, for the socket cap with a large number of abutments, the size of the cohesive angle α needs to be adjusted according to the conditions and positions of the abutments, and the sizes of the cohesive angles α of the abutments with different conditions and the abutments with different positions are also different.

In the utility model discloses an in addition embodiments, it is preferred, the cohesion angle α of interior hat 1 is 6.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

The utility model provides an kinds of telescopic crowns, include the inner crown and establish the outer crown at the inner crown lateral wall, its characterized in that, form clearance between the top of inner crown and the outer crown.
2. The coping of claim 1, wherein the gap has a height of 0.2mm-0.5 mm.
3. The coping of claim 2, wherein the gap has a height of 0.3 mm.
4. The coping of claim 3, wherein the gap is filled with air.
5. The coping of claim 1, wherein the material of the inner crown comprises any of cobalt chromium alloy, cast porcelain, pure titanium and zirconia, and the material of the outer crown comprises any of pure titanium and gold deposits.
6. The coping of claim 1, wherein the material of the inner crown is cobalt chromium alloy and the material of the outer crown is pure titanium; or the inner crown is made of cast porcelain, and the outer crown is made of gold deposition; or the inner crown is made of zirconia, and the outer crown is made of gold deposition.
7. The coping of any of claims , wherein the cohesion angle of the coping is between 2 ° and 8 °.
8. The coping of claim 7, wherein the cohesion angle of the coping is 6 °.