A kind of ladder slot intermaxillary artificial tooth posterior jaw

Abstract

This utility model relates to the field of complete denture restoration, specifically a trapezoidal groove opposing artificial tooth posterior occlusal surface, including: a grooved maxillary occlusal surface and a trapezoidal mandibular occlusal surface. The trapezoidal mandibular surface slides into the grooved maxillary occlusal surface from any direction to form an opposing surface. The angle between the opposing surface and the occlusal plane is a lingual upward tilt angle. The beneficial effects are: the trapezoidal groove opposing artificial tooth posterior occlusal surface proposed by this utility model, with an appropriate lingual upward tilt angle, can shift the resultant force of the occlusal force to the mandibular lingual denture base and transfer part of the retention force of the maxillary lingual denture base to the mandibular lingual denture base, thereby strengthening the retention force of the mandibular lingual denture base, achieving a certain balance of the retention forces of the maxillary and mandibular denture bases, and improving the stability of the complete denture operation.

Description

Technical Field

[0001] This utility model relates to the field of full mouth denture restoration, specifically a stepped-groove artificial tooth posterior occlusal surface. Background Technology

[0002] A good set of dentures depends on the stability of the denture base. Due to the different shapes of the upper and lower jaws in the human mouth, the retention force of the maxillary denture base is much greater than that of the mandibular denture base. Therefore, the stability of the mandibular denture base is crucial to the operational stability of the complete denture.

[0003] In existing technologies, the posterior occlusal surface of artificial teeth all follow the anatomical intercuspal opposition mechanism. Despite various improvements, their occlusal morphology still makes it difficult to correctly decompose and transmit occlusal forces during chewing (see appendix). Figure 1 Appendix Figure 2 This results in poor stability of the mandibular denture base, which limits the stability and comfort of the full denture system and fails to meet the patient's comprehensive functional needs. Utility Model Content

[0004] The purpose of this invention is to provide a trapezoidal groove occlusal artificial tooth posterior occlusal surface to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a posterior occlusal surface of a trapezoidal groove opposing artificial tooth, comprising: a grooved maxillary occlusal surface and a trapezoidal mandibular occlusal surface, wherein the trapezoidal mandibular surface slides into the grooved maxillary occlusal surface from any direction and forms an opposing surface.

[0006] Preferably, the angle between the opposing occlusal surface and the occlusal plane is a lingual upward tilt angle.

[0007] Preferably, the grooved maxillary occlusal surface includes: a maxillary functional surface groove bottom, a buccal functional cusp groove edge, and a lingual functional cusp groove edge.

[0008] Preferably, the trapezoidal mandibular surface includes: a trapezoidal apex of the mandibular functional surface, a trapezoidal edge of the buccal guide surface, and a trapezoidal edge of the lingual guide surface.

[0009] Preferably, the bottom of the maxillary functional surface groove is parallel to the top of the mandibular functional surface trapezoid.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The posterior occlusal surface of the artificial tooth with a stepped groove proposed in this utility model can transfer part of the retention force of the maxillary denture base to the mandibular denture base during chewing, so that the retention force of the maxillary and mandibular denture bases is balanced to a certain extent, thereby improving the stability and comfort of the complete denture operation.

[0012] The grooved upper jaw surface is more likely to hold food, making it easier for the trapezoidal lower jaw surface to cut and crush it. In addition, the opposing jaw surface of this jaw surface is larger, resulting in better chewing efficiency.

[0013] The trapezoidal groove design provides stable occlusal morphology for opposing posterior teeth and is less prone to wear, effectively extending the lifespan of dentures.

[0014] The trapezoidal jaw alignment mechanism is simple and practical, making tooth arrangement and jaw adjustment restorations more convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of traditional jaw-to-jaw food bolus intervention.

[0016] Figure 2 This is a schematic diagram of the forces acting on a traditional jaw support base.

[0017] Figure 3 This is a schematic diagram of a food bolus intervention using a stepped groove for jaw support.

[0018] Figure 4 This is a schematic diagram of the forces acting on the jawbone support in the trapezoidal groove.

[0019] Figure 5 A schematic diagram of maxillary basement projection;

[0020] Figure 6 This is a schematic diagram of the projection of the mandibular base.

[0021] In the diagram: maxillary lingual denture base M1, maxillary buccal denture base M2, mandibular lingual denture base N1, mandibular buccal denture base N2, maxillary alveolar ridge crest line H, mandibular alveolar ridge crest line K, maxillary functional surface alveolar base a1, buccal functional cusp alveolar margin b1, lingual functional cusp alveolar margin c1, mandibular functional surface trapezoidal apex a2, buccal lead-in surface trapezoidal margin b2, lingual lead-in surface trapezoidal margin c2, antimaxillary surface a, occlusal plane o, lingual superior inclination angle α. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1: Please refer to Figures 1 to 6This utility model provides a technical solution: a trapezoidal grooved posterior occlusal surface of an opposing artificial tooth, comprising: a grooved maxillary occlusal surface and a trapezoidal mandibular occlusal surface, wherein the trapezoidal mandibular surface slides into the grooved maxillary occlusal surface from any direction and forms an opposing surface a, the angle between the opposing surface a and the occlusal plane o is a lingual upward tilt angle α, the grooved maxillary occlusal surface comprises: a groove bottom a1 of the maxillary functional surface, a buccal functional cusp groove edge b1 and a lingual functional cusp groove edge c1, the trapezoidal mandibular occlusal surface comprises: a trapezoidal apex a2 of the mandibular functional surface, a buccal lead-in trapezoidal edge b2 and a lingual lead-in trapezoidal edge c2, the groove bottom a1 of the maxillary functional surface and the trapezoidal apex a2 of the mandibular functional surface are parallel.

[0024] In actual use, one end of the maxillary denture is the maxillary lingual denture base M1, and the other end is the maxillary buccal denture base M2. The maxillary alveolar ridge crest line H is set between the maxillary lingual denture base M1 and the maxillary buccal denture base M2. One end of the mandibular denture base is the mandibular lingual denture base N1, and the other end is the mandibular buccal denture base N2. The mandibular alveolar ridge crest line K is set between the mandibular lingual denture base N1 and the mandibular buccal denture base N2. An appropriate lingual inclination angle α can shift the resultant force of the occlusal force to the mandibular lingual denture base N1 and transfer part of the retention force of the maxillary lingual denture base M1 to the mandibular lingual denture base N1, thereby strengthening the retention force of the mandibular lingual denture base N1, achieving a certain balance in the retention force of the maxillary and mandibular denture bases, and improving the stability of the complete denture operation.

[0025] Example 2: Based on Example 1, in order to achieve normal retention of the maxillary denture base without affecting it, the trapezoidal mandibular surface slides into the grooved maxillary surface from any direction and forms the opposing surface a. The angle between the opposing surface a and the occlusal plane o is a lingual upward tilt angle α. The grooved maxillary surface includes: the maxillary functional surface groove bottom a1, the buccal functional cusp groove edge b1, and the lingual functional cusp groove edge c1. The trapezoidal mandibular surface includes: the mandibular functional surface trapezoidal apex a2, the buccal lead-in trapezoidal edge b2, and the lingual lead-in trapezoidal edge c2. The maxillary functional surface groove bottom a1 is parallel to the mandibular functional surface trapezoidal apex a2.

[0026] While the mandibular lingual denture base N1 receives a retention force, the maxillary lingual denture base M1 will be subjected to a dislocation force. Since the maxillary alveolar ridge is relatively wide and the alveolar ridge crest line is blurred, the dislocation force on the maxillary denture base is extremely limited and will not affect the normal retention of the maxillary denture base.

[0027] In actual use, one end of the maxillary denture is the maxillary lingual denture base M1, and the other end is the maxillary buccal denture base M2. A maxillary alveolar ridge crest line H is positioned between the maxillary lingual denture base M1 and the maxillary buccal denture base M2. One end of the mandibular denture base is the mandibular lingual denture base N1, and the other end is the mandibular buccal denture base N2. A mandibular alveolar ridge crest line K is positioned between the mandibular lingual denture base N1 and the mandibular buccal denture base N2. An appropriate lingual inclination angle α can shift the resultant force of the occlusal force to the mandibular lingual denture base N1 and transfer part of the retention force of the maxillary lingual denture base M1 to the mandibular lingual denture base N1, thereby strengthening the retention force of the mandibular lingual denture base N1, achieving a certain balance in the retention force of the maxillary and mandibular dentures, and improving the stability of the complete denture operation. At the mandibular lingual denture base N... While the maxillary lingual denture base M1 receives a retention force, it also experiences a dislocation force. Due to the relatively wide maxillary alveolar ridge and the blurred alveolar ridge crest line, the dislocation force experienced by the maxillary denture base is extremely limited and will not affect its normal retention. As a carrier of artificial teeth, the denture base requires not only appropriate suction retention but also a sound mechanical retention force to maintain its operational stability. This sound mechanical retention force requires the correct decomposition and transmission of occlusal forces on the denture base. Furthermore, the correct decomposition and transmission of occlusal forces on the denture base requires not only the correct spatial position of the teeth but also a correct maxillofacial morphology for support. The morphology of the maxillary and maxillary denture bases in a full-mouth resuscitation system, projected onto the occlusal plane, is a concentric circular structure with the alveolar ridge crest line as the critical point (see Appendix). Figure 5 Appendix Figure 6 The mechanical retention force of the denture base exhibits an internal circularity. When the resultant force of the occlusal tactile forces acts on the inner side of the alveolar ridge crest, the denture base receives a mechanical retention force. When the resultant force of the occlusal tactile forces acts on the outer side of the alveolar ridge crest, the denture base experiences a mechanical dislocation force. The denture base is prone to tilting instantaneously when the resultant force of the occlusal tactile forces acts on the alveolar ridge crest. Therefore, only by shifting or bringing the resultant force of the occlusal tactile forces towards the inner side of the alveolar ridge crest can the retention force of the denture base be strengthened, thereby improving the operational stability of the complete denture.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trapezoidal groove occlusal artificial tooth posterior occlusal surface, comprising: The grooved maxillary occlusal surface and the trapezoidal mandibular occlusal surface are characterized in that: the trapezoidal mandibular occlusal surface slides into the grooved maxillary occlusal surface from any direction and forms an opposing occlusal surface (a); The angle between the opposing occlusal surface (a) and the occlusal plane (o) is a lingual upward tilt angle (α).

2. The posterior occlusal surface of a trapezoidal groove-type artificial tooth according to claim 1, characterized in that: The grooved maxillary surface includes: the maxillary functional surface groove base (a1), the buccal functional cusp groove margin (b1), and the lingual functional cusp groove margin (c1).

3. The posterior occlusal surface of a trapezoidal groove-type artificial tooth according to claim 2, characterized in that: The trapezoidal mandibular surface includes: the mandibular functional surface trapezoidal apex (a2), the buccal guide surface trapezoidal rim (b2), and the lingual guide surface trapezoidal rim (c2).

4. The posterior occlusal surface of a trapezoidal groove-type artificial tooth according to claim 2, characterized in that: The bottom of the maxillary functional surface groove (a1) is parallel to the top of the mandibular functional surface trapezoid (a2).

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