Milk molar all-ceramic crown

Abstract

The utility model relates to the field of dental crowns, and discloses an all-ceramic crown for mammalian molar teeth, which comprises base layers, holes are formed from the bottom to the middle, the base layers are sleeved on a tooth body, the sizes and shapes of the holes in different base layers are different, and the sizes of different base layers are different; holes are formed in the outer layer from the bottom to the middle, the outer layer is arranged on the base layer in a sleeving mode, the outer layer is detachably connected with the base layer, the outer layers are different in size, and the holes in the outer layers are different in size. When a patient needs to install the all-ceramic crown for the mammalian molar, the matched base layer can be selected according to the bad tooth condition of the patient, namely the base layer is matched with the base layers of different holes, then the outer layer of a proper model is selected to be arranged on the base layer in a sleeving manner according to the size and the sparse degree of the whole teeth of the patient, and the prefabricated inner layer and the prefabricated outer layer are adopted; installation can be completed only through proper grinding, the time for manufacturing the all-ceramic crown of the mammalian molar during treatment is shortened, and the discomfort time of a patient is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of dental crowns, in particular to an all-ceramic crown for deciduous molars. Background Art

[0002] Primary molars are an integral part of a child's primary dentition. They are located at the back of the mouth and are responsible for chewing food. Primary molars play a vital role in the growth and development of children, especially in the stage before children change their teeth. They are the main tool for chewing food. Primary molars usually begin to erupt gradually about 6 months after a child is born, which is an important stage in the development of a child's primary dentition. As children grow, primary molars will gradually grow and play an important role in daily diet. They help children chew food, grind food into smaller particles, form chyme that is easy to swallow and digest, and provide children with necessary nutrition. The morphological characteristics of primary molars make them very suitable for chewing functions. Their crowns are relatively wide and the surface is uneven. This special morphological design enables primary molars to grind food more effectively when chewing food, which not only improves children's chewing efficiency, but also helps to cultivate children's good eating habits and oral health. However, primary molars are not permanent teeth. As children grow, primary molars will gradually loosen and fall off. This is a natural process of children's tooth replacement. Normally, deciduous molars begin to fall out gradually around the age of 7 and are subsequently replaced by molars (or permanent molars) in the permanent dentition. The eruption of permanent molars marks the beginning of a new stage of growth and development for children. Deciduous molars have completed their mission and made important contributions to the growth and development of children.

[0003] Since children do not pay attention to their eating habits, they often suffer from tooth decay. However, the crowns of primary molars in the prior art are all made on-site during the treatment process, which takes a long time to make and prolongs the discomfort time of the patients.

[0004] Therefore, there is an urgent need for a deciduous molar all-ceramic crown to solve the problem that the deciduous molar crowns in the prior art are all made on-site during the treatment process, which takes a long time to make and prolongs the patient's discomfort time. Utility Model Content

[0005] In view of this, the utility model proposes a deciduous molar all-ceramic crown, aiming to solve the problem that the deciduous molar crowns in the prior art are all made on-site during the treatment process, which takes a long time to make and prolongs the discomfort time of the patient.

[0006] The utility model provides a full-ceramic crown for deciduous molars, comprising:

[0007] A base layer, with holes opening from the bottom to the middle, the base layer is sleeved on the tooth body, the size and shape of the holes in different base layers are different, and the sizes of different base layers are different;

[0008] The outer layer is provided with holes from the bottom to the middle, the outer layer is sleeved on the base layer, the outer layer and the base layer are detachably connected, the sizes of different outer layers are different, and the sizes of the holes in different outer layers are different.

[0009] Furthermore, the base layer is cylindrical; wherein the base layer comprises:

[0010] The base is cylindrical and is sleeved on the tooth body;

[0011] The external thread is arranged around the outer side wall of the base body.

[0012] Furthermore, the outer layer is columnar; wherein the outer layer comprises:

[0013] The main body is columnar, and a cylindrical hole is opened from the bottom to the inside of the main body. The main body is detachably arranged on the base;

[0014] The inner thread is arranged around the inner wall of the body, and the outer thread is screwed with the inner thread so that the base layer and the outer layer can be detachably connected.

[0015] Furthermore, the outer layer also includes:

[0016] The bite portion is arranged on the top of the outer layer, and the middle portion of the bite portion is recessed toward the base layer.

[0017] Furthermore, the deciduous molar all-ceramic crown also includes:

[0018] The adhesive layer is filled between the base layer and the outer layer, and the adhesive layer is also located at the lower part of the base layer.

[0019] Furthermore, the bottom edge of the outer layer is configured to be arc-shaped so that the bottom of the outer layer fits the gums.

[0020] Furthermore, the deciduous molar all-ceramic crown also includes:

[0021] An identification portion is arranged on the base layer and / or the outer layer, and is used to identify information of the base layer and / or the outer layer; wherein the information includes: model information and size information.

[0022] Furthermore, the base layer and the outer layer are both made of zirconium oxide.

[0023] Furthermore, the center line of the outer layer coincides with the center line of the base layer.

[0024] Compared with the prior art, the beneficial effect of the utility model lies in that the deciduous molar all-ceramic crown includes a base layer and an outer layer. When a patient needs to install the deciduous molar all-ceramic crown, a matching base layer can be selected according to the patient's own bad tooth condition, that is, according to the size of the remaining teeth on the bad teeth, after grinding, it is matched with the base layer of different holes, and the base layer is sleeved on the remaining teeth after grinding. Then, according to the size and sparseness of the patient's overall teeth, an outer layer of a suitable model is selected and sleeved on the base layer, and then grinding is performed to make the deciduous molar all-ceramic crown suitable for the patient. With the prefabricated inner layer and outer layer, the installation of the deciduous molar all-ceramic crown can be completed by only appropriate grinding, which reduces the time for making the deciduous molar all-ceramic crown during treatment, that is, reduces the treatment time, thereby reducing the patient's discomfort time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of the structure of a full-ceramic crown for deciduous molars provided by an embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the structure of a full-ceramic crown for deciduous molars provided by an embodiment of the utility model;

[0028] Figure 3 An exploded view of a deciduous molar all-ceramic crown provided by an embodiment of the utility model;

[0029] Figure 4 A cross-sectional view of an all-ceramic crown for deciduous molars provided in an embodiment of the utility model.

[0030] In the figure: 100, base layer; 110, matrix; 120, external thread; 200, outer layer; 210, body; 220, internal thread; 230, bite part; 300, adhesive layer; 400, identification part. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] See also Figure 1-4 As shown, this embodiment provides an all-ceramic crown for deciduous molars, including a base layer 100, with holes opened from the bottom to the middle, the base layer 100 is sleeved on the tooth body, the size and shape of the holes in the base layers 100 of different base layers 100 are different, and the sizes of different base layers 100 are different; an outer layer 200, with holes opened from the bottom to the middle, the outer layer 200 is sleeved on the base layer 100, the outer layer 200 is detachably connected to the base layer 100, the sizes of different outer layers 200 are different, and the sizes of the holes in different outer layers 200 are different.

[0036] It is understandable that the deciduous molar all-ceramic crown includes a base layer 100 and an outer layer 200. When the patient needs to install the deciduous molar all-ceramic crown, the base layer 100 that can match can be selected according to the patient's own bad tooth condition, that is, according to the size of the remaining teeth on the bad teeth, after grinding, it is matched with the base layer 100 with different holes, and the base layer 100 is set on the remaining teeth after grinding. Then, according to the size and sparseness of the patient's overall teeth, the outer layer 200 of a suitable model is selected and set on the base layer 100, and then grinding is performed again to make the deciduous molar all-ceramic crown suitable for the patient. With the prefabricated inner layer and outer layer 200, the installation of the deciduous molar all-ceramic crown can be completed by appropriate grinding, which reduces the time for making the deciduous molar all-ceramic crown during treatment, that is, reduces the treatment time, thereby reducing the patient's discomfort time. Preferably, a connecting material can be set between the base layer 100 and the tooth body to firmly connect the two, for example, zirconium oxide with high humidity.

[0037] Specifically, the holes in the base layer 100 can be conical, columnar, etc., and the size of the base layer 100 is set to be diverse, which can be matched according to the shape and size of the patient's remaining teeth after repair; the hole size of the outer layer 200 corresponds to the size of the matching base layer 100, and the size of the outer layer 200 is determined according to the sparseness of the patient's other teeth and the size of the teeth, and has strong adaptability.

[0038] In a specific embodiment of the present application, the base layer 100 is cylindrical; wherein the base layer 100 includes a base body 110 which is cylindrical and is sleeved on the tooth body; and an external thread 120 which is arranged around the outer wall of the base body 110 .

[0039] In a specific embodiment of the present application, the outer layer 200 is columnar; wherein, the outer layer 200 includes a main body 210, which is columnar, and the main body 210 has a cylindrical hole from the bottom to the inside, and the main body 210 is detachably arranged on the base 110; the internal thread 220, the internal thread 220 is surrounded and arranged on the inner wall of the main body 210, and the external thread 120 is screwed with the internal thread 220, so that the base layer 100 and the outer layer 200 can be detachably connected.

[0040] It is understandable that the base layer 100 and the outer layer 200 are connected by the external thread 120 and the internal thread 220, which can make the connection between the base layer 100 and the outer layer 200 more secure and improve the connection stability of the deciduous molar crown. Preferably, the base layer 100 and the tooth body can be connected by threaded connection, or by wet connection, that is, wet zirconium oxide is filled between the base layer 100 and the tooth body to fix the base layer 100 on the tooth body, and the utility model does not make specific restrictions on this.

[0041] In a specific embodiment of the present application, the outer layer 200 further includes a bite portion 230 disposed on the top of the outer layer 200 , and the middle portion of the bite portion 230 is recessed toward the base layer 100 .

[0042] It can be understood that a bite portion 230 is provided on the side of the outer layer 200 that contacts the tooth opposite to the bad tooth in the oral cavity, and the middle part of the bite portion 230 is recessed toward one side of the base layer 100 of the deciduous molar all-ceramic crown, which can better conform to the structure of the patient's normal teeth and is more comfortable when used. Preferably, the dentist can also grind the bite portion 230 to make the patient more comfortable when biting and chewing food.

[0043] In a specific embodiment of the present application, the all-ceramic crown for primary molars further includes an adhesive layer 300 filled between the base layer 100 and the outer layer 200 , and the adhesive layer 300 is also located at the lower part of the base layer 100 .

[0044] It is understandable that the bonding layer 300 is filled between the base layer 100 and the outer layer 200, and in combination with the threaded connection, can greatly strengthen the connection stability between the base layer 100 and the outer layer 200, making the patient more comfortable when using the deciduous molar all-ceramic crown in daily life. Preferably, the bonding layer 300 includes but is not limited to wet zirconium oxide.

[0045] In a specific embodiment of the present application, the bottom edge of the outer layer 200 is configured to be arc-shaped so that the bottom of the outer layer 200 fits against the gums.

[0046] It can be understood that setting the bottom of the outer layer 200 to an arc shape can make the bottom of the outer layer 200 fit the patient's gums better, thereby improving the comfort of the patient in wearing and using the deciduous molar all-ceramic crown.

[0047] In a specific embodiment of the present application, the all-ceramic crown for deciduous molars further includes an identification portion 400, which is disposed on the base layer 100 and / or the outer layer 200, and the identification portion 400 is used to identify information of the base layer 100 and / or the outer layer 200; wherein the information includes: model information and size information.

[0048] It is understandable that providing the identification portion 400 on the base layer 100 and / or the outer layer 200 can indicate important information of the base layer 100 and the outer layer 200, facilitate classification of the base layer 100 and the outer layer 200, and facilitate selection and installation by dentists.

[0049] In a specific embodiment of the present application, the base layer 100 and the outer layer 200 are both made of zirconium oxide.

[0050] It is understandable that zirconia can prevent tooth sensitivity: the thickness of the crown is thinner, and less tooth tissue is removed, which can protect the teeth to the greatest extent and prevent tooth sensitivity and pain. Zirconia crowns have better transparency, color close to natural teeth, and higher aesthetics. Zirconia crowns have better biocompatibility and will not stimulate gum redness, swelling, pain, or gum staining. Zirconia crowns do not generate magnetic fields, nor do they interfere with MRI, CT and other examinations.

[0051] In a specific embodiment of the present application, the center line of the outer layer 200 coincides with the center line of the base layer 100 .

[0052] It can be understood that the center line is the central axis, and the central axis of the outer layer 200 coincides with the central axis of the base layer 100, which can make the installation of the outer layer 200 and the base layer 100 stable and firm.

[0053] The working principle of the utility model is as follows: when a patient needs to install the all-ceramic crown for deciduous molars, a matching base layer 100 is selected according to the patient's own bad tooth condition, that is, according to the size of the remaining teeth on the bad teeth, the base layer 100 is ground into different shapes to match the base layers 100 with different holes, and the base layer 100 is sleeved on the remaining teeth after grinding. Then, according to the size and sparseness of the patient's overall teeth, an outer layer 200 of a suitable model is selected and sleeved on the base layer 100, and then the outer layer 200 is ground to make the all-ceramic crown for deciduous molars suitable for the patient.

[0054] In summary, the deciduous molar all-ceramic crown includes a base layer 100 and an outer layer 200. When a patient needs to install the deciduous molar all-ceramic crown, a matching base layer 100 can be selected according to the patient's own bad tooth condition, that is, according to the size of the remaining teeth on the bad teeth, after grinding, it is matched with the base layer 100 with different holes, and the base layer 100 is sleeved on the remaining teeth after grinding. Then, according to the size and sparseness of the patient's overall teeth, an outer layer 200 of a suitable model is selected and sleeved on the base layer 100, and then grinding is performed to make the deciduous molar all-ceramic crown suitable for the patient. With the prefabricated inner layer and outer layer 200, the installation of the deciduous molar all-ceramic crown can be completed by appropriate grinding, which reduces the time for making the deciduous molar all-ceramic crown during treatment, that is, reduces the treatment time, thereby reducing the patient's discomfort time.

[0055] Furthermore, the base layer 100 and the outer layer 200 are connected by the external thread 120 and the internal thread 220, which can make the connection between the base layer 100 and the outer layer 200 more secure and improve the connection stability of the primary molar crown. The side of the outer layer 200 that contacts the opposite teeth in the oral cavity is provided with a bite portion 230, and the middle part of the bite portion 230 is recessed toward one side of the base layer 100 in the primary molar all-ceramic crown, which can better conform to the structure of the patient's normal teeth and is more comfortable when used.

[0056] Furthermore, an adhesive layer 300 is filled between the base layer 100 and the outer layer 200, which cooperates with the threaded connection to greatly strengthen the connection stability between the base layer 100 and the outer layer 200, making it more comfortable for patients to use the deciduous molar all-ceramic crown in daily life. The bottom of the outer layer 200 is set to an arc shape, which can make the bottom of the outer layer 200 fit the patient's gums better, improving the comfort of patients wearing and using the deciduous molar all-ceramic crown. The identification part 400 is set on the base layer 100 and / or the outer layer 200, which can mark the important information of the base layer 100 and the outer layer 200, facilitate the classification of the base layer 100 and the outer layer 200, and facilitate dentists to select and install.

[0057] Furthermore, zirconia can prevent tooth sensitivity: the thickness of the crown is relatively thin, and less tooth tissue is removed, which can protect the teeth to the greatest extent and prevent tooth sensitivity and pain. Zirconia crowns have good transparency, color close to natural teeth, and high aesthetics. Zirconia crowns have good biocompatibility and will not stimulate redness and swelling of the gums, pain, or staining of the gums. Zirconia crowns do not generate magnetic fields, nor do they interfere with magnetic resonance imaging, CT and other examinations. The central axis of the outer layer 200 coincides with the central axis of the base layer 100, which can ensure that the outer layer 200 and the base layer 100 are installed stably and firmly.

[0058] Those skilled in the art can understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A full-ceramic crown for deciduous molars, characterized in that: include: A base layer, with holes opening from the bottom to the middle, the base layer is sleeved on the tooth body, the size and shape of the holes in different base layers are different, and the sizes of different base layers are different; The outer layer is provided with holes from the bottom to the middle, the outer layer is sleeved on the base layer, the outer layer and the base layer are detachably connected, the sizes of different outer layers are different, and the sizes of the holes in different outer layers are different.

2. The all-ceramic crown for primary molars according to claim 1, characterized in that: The base layer is cylindrical; wherein the base layer comprises: The base is cylindrical and is sleeved on the tooth body; The external thread is arranged around the outer side wall of the base body.

3. The all-ceramic crown for primary molars according to claim 2, characterized in that: The outer layer is columnar; wherein the outer layer comprises: The main body is columnar, and a cylindrical hole is opened from the bottom to the inside of the main body. The main body is detachably arranged on the base; The inner thread is arranged around the inner wall of the body, and the outer thread is screwed with the inner thread so that the base layer and the outer layer can be detachably connected.

4. The all-ceramic crown for primary molars according to claim 3, characterized in that: The outer layer also includes: The bite portion is arranged on the top of the outer layer, and the middle part of the bite portion is recessed toward the base layer.

5. The all-ceramic crown for primary molars according to claim 1, characterized in that: The deciduous molar all-ceramic crown also includes: The adhesive layer is filled between the base layer and the outer layer, and the adhesive layer is also located at the lower part of the base layer.

6. The all-ceramic crown for primary molars according to claim 1, characterized in that: The bottom edge of the outer layer is configured to be arc-shaped so that the bottom of the outer layer fits the gums.

7. The all-ceramic crown for primary molars according to claim 1, characterized in that: The deciduous molar all-ceramic crown also includes: An identification portion is arranged on the base layer and / or the outer layer, and is used to identify information of the base layer and / or the outer layer; wherein the information includes: model information and size information.

8. The all-ceramic crown for primary molars according to claim 1, characterized in that: The base layer and the outer layer are both made of zirconium oxide.

9. The all-ceramic crown for primary molars according to claim 1, characterized in that: The center line of the outer layer coincides with the center line of the base layer.

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