Dental orthodontic appliance and dental orthodontic appliance assembly

Abstract

The utility model discloses a dental orthodontic appliance and a dental orthodontic appliance component, the dental orthodontic appliance comprises an appliance body, a jaw pad, a first occlusal surface and a second occlusal surface, the jaw pad is positioned on the occlusal surface of the appliance body, the first occlusal surface and the second occlusal surface are connected with the occlusal surface, the first occlusal surface is arranged corresponding to the tooth occlusal surface, and the second occlusal surface is arranged corresponding to the tooth occlusal surface. The second occlusal surface is arranged corresponding to a gap between adjacent teeth, and the jaw pad positioned on the second occlusal surface tends to retract inwards. According to the utility model, the jaw pad positioned on the second occlusal surface is designed to be of an inward shrinkage structure, so that the area proportion of the jaw pad supported by teeth can be increased, furthermore, the lower part of each part of the jaw pad can be supported by the teeth, and the phenomena of deformation, collapse and the like caused by no tooth support below the jaw pad are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dental correction, in particular to a dental orthodontic appliance and a dental orthodontic appliance component. Background Art

[0002] Orthodontic appliances made of polymer materials are becoming more and more popular due to their advantages of beauty, convenience and ease of cleaning. Generally, orthodontic treatment using orthodontic appliances requires a series of orthodontic appliances, and the geometry of the cavity of each of these orthodontic appliances that accommodates the teeth basically matches the tooth layout that is desired to be achieved in the corresponding treatment step.

[0003] Occlusion refers to the relationship and function of the upper and lower teeth biting together. Malocclusion can affect the coordination, aesthetics and function of the craniofacial teeth and jaws, occlusion, craniofacial structure and growth direction. At present, orthodontic appliances including jaw pads are often used to treat malocclusion. The jaw pads in the prior art are relatively low in strength and are prone to being bitten down. Utility Model Content

[0004] The utility model aims to provide a dental orthodontic appliance and a dental orthodontic appliance assembly, which can increase the area ratio of the jaw pad supported by the teeth, and further, can also make the jaw pad have teeth support underneath, so that the jaw pad is not easily bitten down.

[0005] To achieve one of the purposes of the utility model mentioned above, one embodiment of the utility model provides a dental orthodontic appliance, comprising an appliance body and a jaw pad located on the occlusal surface of the appliance body, the occlusal surface comprising a first occlusal surface and a second occlusal surface connected to each other, the first occlusal surface being arranged corresponding to the occlusal surface of the teeth, the second occlusal surface being arranged corresponding to the gap between adjacent teeth, and the jaw pad located on the second occlusal surface tends to retract inward.

[0006] As a further improvement of an embodiment of the present invention, the junction area between the jaw pad and the occlusal surface forms an outer contour line, and in the direction from the buccal surface to the lingual surface of the orthodontic body, the outer contour line has a width, and the width tends to decrease when the first occlusal surface transitions to the second occlusal surface.

[0007] As a further improvement of an implementation mode of the utility model, the outer contour line is formed by enclosing a plurality of curve segments, and there is a smooth transition between adjacent curves.

[0008] As a further improvement of an embodiment of the utility model, the outer contour line includes a first outer contour line corresponding to the first occlusal surface and a second outer contour line corresponding to the second occlusal surface, the width of the first outer contour line is a first width, the width of the second outer contour line is a second width, and the ratio of the maximum value of the first width to the minimum value of the second width is in the range of 0.15-0.5.

[0009] As a further improvement of an embodiment of the present invention, the minimum value of the second width is not less than 0.5 mm, or the minimum value of the second width is in the range of 1 mm-4 mm, and the minimum value of the first width is greater than or equal to the maximum value of the second width.

[0010] As a further improvement of an embodiment of the present invention, the outer contour line includes a first outer contour line corresponding to the first occlusal surface, and the first outer contour line corresponding to a tooth includes a connected first peak segment, a first trough segment and a second peak segment, or the first outer contour line corresponding to a tooth includes a connected first trough segment, a first peak segment and a second trough segment.

[0011] As a further improvement of an embodiment of the utility model, the outer contour line includes a second outer contour line corresponding to the second occlusal surface, the second outer contour line is a trough segment, and the second outer contour line includes a first trough segment close to the lingual surface and a second trough segment close to the buccal surface.

[0012] As a further improvement of an embodiment of the utility model, the jaw pad is arranged corresponding to multiple posterior teeth, the first occlusal surface includes a first area located in the middle and a second area arranged around the first area, the dividing line between the first area and the second area passes through multiple tips, and the multiple tips correspond to multiple tooth cusps of the posterior teeth respectively, and the junction area of ​​the jaw pad and the first occlusal surface forms a first outer contour line, the first outer contour line includes an inner line located in the first area and an outer line located in the second area, and the outer line is connected to the inner line only in the mesiodistal direction of the orthodontic device body.

[0013] As a further improvement of an embodiment of the utility model, the junction area between the jaw pad and the second occlusal surface forms a second outer contour line, the outer line connects the inner line and the second outer contour line, and the second outer contour line and the outer lines at both ends form a trough section.

[0014] As a further improvement of one embodiment of the utility model, the inner line includes a peak segment, and the endpoints of two adjacent trough segments on the same side form a baseline, and the maximum distance between the peak segment and the baseline on the same side is not less than 0.5mm, or the maximum distance is in the range of 1mm-3mm.

[0015] As a further improvement of an embodiment of the utility model, the inner line includes a wave crest segment, and the endpoint of each wave crest segment is arranged adjacent to the corresponding tip.

[0016] As a further improvement of an embodiment of the utility model, the inner line includes a first inner line close to the buccal surface of the orthodontic device body and a second inner line close to the lingual surface of the orthodontic device body, a first gap is provided between the first inner line and the corresponding dividing line, and a second gap is provided between the second inner line and the corresponding dividing line.

[0017] As a further improvement of an embodiment of the present invention, in the direction from the buccal surface of the orthodontic appliance body toward the lingual surface, the minimum value of the first gap is not less than 2 mm, and the minimum value of the second gap is not less than 2 mm.

[0018] As a further improvement of an embodiment of the utility model, the jaw pad includes an outer contour line formed at the junction area with the occlusal surface, an end face away from the occlusal surface, and a side surface connecting the outer peripheral edge of the end face and the outer contour line, the end face and the side surface are arranged to form a cavity, the orthodontic device body has a cavity for accommodating teeth, and the cavity is connected to the cavity.

[0019] As a further improvement of an embodiment of the utility model, the side surface is formed by a plurality of curved surfaces, and there is a smooth transition between adjacent curved surfaces.

[0020] As a further improvement of an embodiment of the utility model, a plurality of points on the outer contour line enclose a reference plane, the side surface is perpendicular to the reference plane, or at least part of the side surface forms an acute angle with the reference plane.

[0021] As a further improvement of an embodiment of the utility model, the shape of the end surface matches the shape of the opposing jaw occlusal surface.

[0022] As a further improvement of an embodiment of the utility model, the dental orthodontic appliance also includes a filling portion located in the cavity.

[0023] As a further improvement of an embodiment of the utility model, the jaw pad includes a plurality of first occlusal surfaces and a plurality of second occlusal surfaces connected one by one at intervals, and the jaw pad at each second occlusal surface tends to retract.

[0024] To achieve one of the purposes of the utility model described above, one embodiment of the utility model provides a dental orthodontic appliance assembly, characterized in that it includes the dental orthodontic appliance and the opposing dental orthodontic appliance as described above, wherein one of the dental orthodontic appliance and the opposing dental orthodontic appliance is arranged corresponding to the maxillary teeth, and the other is arranged corresponding to the mandibular teeth, and the opposing dental orthodontic appliance includes an opposing dental appliance body and a guide portion located on the occlusal surface of the opposing dental appliance body, and when in an occlusal state, the guide portion and the jaw pad cooperate with each other in the mesiodistal direction to realize horizontal movement of the maxillary teeth or the mandibular teeth.

[0025] Compared with the prior art, the beneficial effect of the present invention is that: in one embodiment of the present invention, the jaw pad located on the second occlusal surface is designed as a retracted structure, which can increase the proportion of the jaw pad area supported by the teeth. Furthermore, each part of the jaw pad can be supported by the teeth below, thereby avoiding deformation and collapse of the jaw pad due to lack of tooth support below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereoscopic view of a dental orthodontic appliance according to one embodiment of the utility model;

[0027] Figure 2 It is another schematic diagram of a dental orthodontic appliance according to one embodiment of the utility model;

[0028] Figure 3 It is a partial schematic diagram of a dental orthodontic appliance according to one embodiment of the utility model;

[0029] Figure 4 It is another partial schematic diagram of a dental orthodontic appliance according to one embodiment of the utility model;

[0030] Figure 5 is a three-dimensional diagram of a jaw pad located in the first area according to an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of a jaw pad located on a first occlusal surface according to an embodiment of the utility model;

[0032] Figure 7 It is a schematic diagram of a dental orthodontic appliance assembly according to one embodiment of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0034] Combination Figures 1 to 3 , illustrating a dental orthodontic appliance 100 according to an embodiment of the present invention.

[0035] The dental orthodontic appliance 100 includes an appliance body 10 and a jaw pad 20 located on an occlusal surface A1 of the appliance body 10 , and the jaw pad 20 is disposed corresponding to a plurality of posterior teeth in a posterior tooth area.

[0036] The occlusal surface A1 includes a first occlusal surface A11 and a second occlusal surface A12 which are connected to each other. The first occlusal surface A11 is arranged corresponding to the occlusal surface of the teeth, and the second occlusal surface A12 is arranged corresponding to the gap between adjacent teeth.

[0037] Here, the "tooth occlusal surface" refers to the lower end surface of each maxillary tooth or the upper end surface of each mandibular tooth, and the "interproximal tooth gap" refers to the area between two adjacent teeth, and the interproximal tooth gap connects the occlusal surfaces of two adjacent teeth.

[0038] In this embodiment, the jaw pad 20 located at the second occlusal surface A12 has a tendency to retract.

[0039] Here, the jaw pad 20 includes a first portion 21 located on the first occlusal surface A11 and a second portion 22 located on the second occlusal surface A12. The first portion 21 is connected to the second portion 22, and the second portion 22 tends to shrink inward compared to the first portion 21, that is, the second portion 22 forms a narrower necking section.

[0040] Here, in the direction from the buccal surface of the tooth to the lingual surface of the tooth, the width of the occlusal surface of the tooth is greater than the width of the gap between adjacent teeth. When the jaw pad 20 is subjected to the occlusal pressure applied by the jaw, the occlusal surface of the tooth provides support for the first part 21 located on the first occlusal surface A11, and the gap between adjacent teeth provides support for the second part 22 located on the second occlusal surface A12. In other words, the relatively wide occlusal surface of the tooth supports the relatively wide first part 21, and the relatively narrow gap between adjacent teeth supports the relatively narrow second part 22. At this time, the area ratio of the jaw pad 20 supported by the teeth is increased. Furthermore, the first part 21 and the second part 22 of the jaw pad 20 can be supported by teeth (the occlusal surface of the tooth or the gap between adjacent teeth) below, thereby avoiding deformation and collapse of the jaw pad 20 due to the lack of tooth support below.

[0041] In this embodiment, the jaw pad 20 includes an outer contour line L formed at the junction area with the occlusal surface A1, an end face 23 away from the occlusal surface A1, and a side face 24 connecting the outer periphery of the end face 23 and the outer contour line L. The end face 23 and the side face 24 are arranged to form a cavity S1, and the orthodontic body 10 has a chamber S2 for accommodating teeth, and the cavity S1 is connected to the chamber S2.

[0042] Here, the appliance body 10 may be an invisible appliance made of a polymer material, the cavity S2 has a geometric shape for repositioning the dentition from a current layout to a next layout, the jaw pad 20 may be integrally formed with the appliance body 10, and the cavity S1 formed by the jaw pad 20 is interconnected with the cavity S2 formed by the appliance body 10.

[0043] The jaw pad 20 forming the cavity S1 is a hollow structure. Combined with the above description, since the jaw pad 20 located on the second occlusal surface A12 of this embodiment has an inward shrinking tendency, the strength of the hollow structure can be enhanced to prevent the hollow structure from being bitten down.

[0044] Of course, the dental orthodontic appliance 100 may further include a filling portion located in the cavity S1 , and the filling portion may further enhance the strength of the jaw pad 20 .

[0045] In this embodiment, combined with Figure 3 The shape of the end surface 23 of the jaw pad 20 matches the shape of the occlusal surface of the opposing jaw.

[0046] Here, the "opposing mandibular occlusal surface" can be the occlusal surface of the opposing teeth, the occlusal surface of the opposing orthodontic appliance body or the occlusal surface of the opposing jaw pad, and "the shape of the end face 23 of the jaw pad 20 matches the shape of the opposing mandibular occlusal surface" means that when the upper and lower jaws are occluded, the end face 23 of the jaw pad 20 can match the opposing mandibular occlusal surface. In this way, the accuracy of the occlusal position and the stability of the occlusion can be improved, thereby improving the jaw position correction effect.

[0047] Combination Figure 3 In this embodiment, the end surface 23 of the jaw pad 20 is an irregular shape as an example, that is, the end surface 23 at this time is a non-planar structure.

[0048] In addition, since the outer contour line L is located on the occlusal surface A1 of the orthodontic body 10, the multiple points forming the outer contour line L are basically not on the same plane. Therefore, the plane enclosed by the outer contour line L is characterized here as "the reference plane enclosed by multiple points on the outer contour line L", and the reference plane passing through as many points on the outer contour line L as possible is taken as the basis.

[0049] In one embodiment, the side surface 24 is perpendicular to the reference plane, that is, at this time, it can be regarded as that the jaw pad 20 is substantially perpendicular to the occlusal surface A1 of the appliance body 10 (combined with Figure 5 ), the contour line of the positive projection of the jaw pad 20 on the occlusal surface A1 is the outer contour line L.

[0050] In another embodiment, at least a portion of the side surface 24 forms an acute angle with the reference plane, that is, the jaw pad 20 is tilted relative to the occlusal surface A1.

[0051] Specifically, an acute angle is formed between the side surface 24 located at the distal end of the jaw pad 20 and the reference plane, that is, the side surface 24 is tilted toward the center of the jaw pad 20 as a whole. At this time, when the dental orthodontic appliance 100 with the jaw pad 20 is obtained by demolding, the tilted distal side surface 24 can effectively reduce the difficulty of demolding.

[0052] Alternatively, the side surfaces 24 of the jaw pad 20 close to the buccal surface A2 and the lingual surface A3 of the appliance body 10 respectively form acute angles with the reference plane, which can also reduce the difficulty of demolding.

[0053] It can be understood that when an acute angle is formed between the side 24 and the reference plane, the positive projection size of the edge of the side 24 away from the outer contour line L on the occlusal surface A1 is smaller than the outer contour line L, that is, the entire jaw pad 20 has a structure that is narrow at the top and wide at the bottom, which can effectively improve the strength of the jaw pad 20.

[0054] In this embodiment, combined with Figures 4 to 6 The outer contour line L formed by the boundary area between the jaw pad 20 and the occlusal surface A1 is located on the occlusal surface A1, and the outer contour line L simultaneously extends to cover a portion of the first occlusal surface A11 and a portion of the second occlusal surface A12.

[0055] In the direction from the buccal surface A2 of the appliance body 10 toward the lingual surface A3, the outer contour line L has a width, and the width tends to decrease when the first occlusal surface A11 transitions to the second occlusal surface A12.

[0056] Here, “the first occlusal surface A11 transitions to the second occlusal surface A12” refers to the area of ​​the first occlusal surface A11 close to the second occlusal surface A12 extending to the second occlusal surface A12, rather than the entire first occlusal surface A11 extending to the second occlusal surface A11.

[0057] That is to say, the outer contour line L located at the second occlusal surface A12 is narrower, and the jaw pad 20 corresponding to this part of the outer contour line L is located at the second part 22 of the second occlusal surface A12. In other words, the narrower outer contour line L corresponds to the jaw pad 20 with a shrinking trend.

[0058] In addition, the outer contour line L is formed by a plurality of curved lines, and there is a smooth transition between adjacent curves.

[0059] Correspondingly, the side surface 24 is formed by a plurality of curved surfaces, and adjacent curved surfaces have a smooth transition.

[0060] That is to say, the side surface 24 does not include a plane, or in other words, there is no right-angle, acute-angle or obtuse-angle transition on the side surface 24. In this way, the occlusal pressure on the entire jaw pad 20 can be evenly distributed, avoiding stress concentration areas on the jaw pad 20, thereby further enhancing the strength of the jaw pad 20. Moreover, when the dental orthodontic appliance 100 with the jaw pad 20 is obtained by demolding, the arc transition can effectively reduce the difficulty of demolding.

[0061] In this embodiment, the outer contour line L includes a first outer contour line L1 corresponding to the first occlusal surface A11 and a second outer contour line L2 corresponding to the second occlusal surface A12. In the direction from the buccal surface A2 of the orthodontic device body 10 toward the lingual surface A3, the width of the first outer contour line L1 is the first width d1, and the width of the second outer contour line L2 is the second width d2.

[0062] Here, the first width d1 and the second width d2 are both variable widths, the first width d1 is relatively large to correspond to the relatively wide first part 21 located on the first occlusal surface A11, and the second width d2 is relatively small to correspond to the relatively narrow second part 22 located on the second occlusal surface A12. By reasonably designing the first width d1 and the second width d2, the first part 21 and the second part 22 of the jaw pad 20 can be supported by teeth below, and the first width d1 and the second width d2 can be customized according to the posterior teeth of different patients or different posterior teeth of the same patient.

[0063] Specifically, the ratio of the maximum value of the first width d1 to the minimum value of the second width d2 is in the range of 0.15-0.5, and the minimum value of the second width d2 is not less than 0.5 mm.

[0064] It should be noted that since the width of the area in the gap between adjacent teeth that can provide support for the second part 22 of the jaw pad 20 is relatively narrow, a narrower second width d2 is required to avoid a lack of tooth support under the second part 22. When the second width d2 is too narrow, the process difficulty will increase, and when the second width d2 is directly zero (that is, multiple first parts 21 are spaced apart), the difficulty of demolding will be greatly increased.

[0065] While considering the difficulty of process and demoulding as well as making the second width d2 as narrow as possible, the present embodiment controls the minimum value of the second width d2 to be no less than 0.5 mm. Preferably, the minimum value of the second width d2 is in the range of 1 mm to 4 mm.

[0066] In addition, the minimum value of the first width d1 is greater than or equal to the maximum value of the second width d2, which further ensures that the first width d1 is relatively large and the second width d2 is relatively small.

[0067] In this embodiment, the first outer contour line L1 corresponding to one tooth includes a first wave crest segment, a first wave valley segment and a second wave crest segment connected, or the first outer contour line L1 corresponding to one tooth includes a first wave valley segment, a first wave crest segment and a second wave valley segment connected.

[0068] For example, Figure 2 The distal part of the first outer contour line L1 of the posterior tooth No. 17 includes the connected first peak segment, the first trough segment and the second peak segment, and the part of the first outer contour line L1 of the posterior tooth No. 15 close to the lingual surface A3 includes the connected first trough segment, the first peak segment and the second trough segment.

[0069] That is to say, the first outer contour line L1 may include connected wave crest segments and wave trough segments, that is, a protruding structure may be formed at the first outer contour line L1 , and the protruding structure may further enhance the strength of the corresponding jaw pad 20 .

[0070] Combination Figure 4 The second outer contour line L2 is a trough section, and the second outer contour line L2 includes a first trough section close to the lingual surface A3 and a second trough section close to the buccal surface A2. The corresponding arrangement of the first trough section and the second trough section can make the second width of the second outer contour line L2 show a trend of first decreasing and then increasing in the mesiodistal direction.

[0071] In this embodiment, combined with Figures 4 to 6 The first occlusal surface A11 includes a first area A111 located in the middle and a second area A112 arranged around the first area A111. The boundary line L3 between the first area A111 and the second area A112 passes through a plurality of tips R, and the plurality of tips R respectively correspond to a plurality of cusps of the posterior teeth.

[0072] Here, the first area A111 is the central area of ​​the first occlusal surface A11. The first area A111 corresponds to Figure 5 The central concave portion in the second area A112 is the peripheral area of ​​the first occlusal surface A11, and the second area A112 corresponds to Figure 5 The peripheral inclined portion (i.e., the second area A112 connects the buccal surface A2, the lingual surface A3 and the non-active area A12) in the jaw pad 20. If the jaw pad 20 is arranged corresponding to the first area A111, the entire first area A111 can play a stable supporting role, which can improve the stability of the jaw pad 20 under the occlusal pressure. If the jaw pad 20 is arranged corresponding to the second area A112, it is the inclined surface that bears the occlusal pressure, and the supporting effect of the inclined surface is unstable and is prone to lateral sliding and collapse.

[0073] Here, combined Figure 6The junction area of ​​the jaw pad 20 and the first occlusal surface A11 forms a first outer contour line L1, and the first outer contour line L1 includes an inner line L11 located in the first area A111 and an outer line L12 located in the second area A112. The outer line L12 is connected to the inner line L11 only in the mesiodistal direction of the orthodontic body 10.

[0074] That is to say, on the first occlusal surface A11, most of the first part 21 of the jaw pad 20 is set corresponding to the first area A111, and only a small part is set corresponding to the second area A112 to connect the second part 22 of the jaw pad 20 at the second occlusal surface A12. The advantage of such a setting is that most of the jaw pad 20 corresponding to the first occlusal surface A11 is supported by the first area A111, and the first area A111 can provide stable support for the jaw pad 20, thereby maintaining a stable occlusal pressure.

[0075] In addition, the inner line L11 includes a first inner line L111 close to the buccal surface A2 of the orthodontic device body 10 and a second inner line L112 close to the lingual surface A3 of the orthodontic device body 10. There is a first gap P1 between the first inner line L111 and the corresponding dividing line L3, and there is a second gap P2 between the second inner line L112 and the corresponding dividing line L3.

[0076] In other words, in the direction from the buccal surface A2 of the appliance body 10 toward the lingual surface A3, there is a gap between the first outer contour line L1 and the boundary line L3 to ensure that the corresponding jaw pad 20 is located in the first area A111.

[0077] Specifically, in the direction from the buccal surface A2 of the orthodontic appliance body 10 toward the lingual surface A3, the minimum value of the first gap P1 is not less than 2 mm, and the minimum value of the second gap P2 is not less than 2 mm. In other words, the corresponding jaw pad 20 needs to be located in the first area A111 as much as possible.

[0078] In the proximal-distal direction, due to the need to connect the second outer contour line L2, the first outer contour line L1 extends out of the dividing line L3 to form an outer line L12 located in the second area A112. The outer line L12 actually connects the inner line L11 and the second outer contour line L2. The second outer contour line L2 and the outer lines L12 at both ends form a trough section M.

[0079] Here, there is a smooth transition between the outer line L12 and the second outer contour line L2. Taking the outer line L12 and the second outer contour line L2 close to the lingual surface A3 of the orthodontic device body 10 as an example, the second outer contour line L2 is connected to the outer lines L12 at both ends to form a curve, which bends toward the buccal surface A2 to form a trough section M.

[0080] At this time, when transitioning from one of the second areas A112 to another adjacent second area A112 via the second occlusal surface A12, the width of the outer contour line L in the mesiodistal direction tends to first decrease and then increase, thereby obtaining a second outer contour line L2 with a smaller width and improving the smoothness of the transition between the first outer contour line L1 and the second outer contour line L2.

[0081] In this embodiment, continue to combine Figures 4 to 6 Taking the first inner line L11 as an example, the first inner line L11 includes a peak segment N, and the endpoints M1 of two adjacent trough segments M on the same side (that is, two trough segments M both set close to the cheek surface A2) form a reference line M2, and the maximum distance d3 between the peak segment N and the reference line M2 on the same side is not less than 0.5 mm.

[0082] Here, the two trough segments M are roughly flush, the baseline M2 is roughly the tangent of the two trough segments M, and the maximum distance d3 is the distance that the peak segment N protrudes out of the baseline M2. By controlling the maximum distance d3, the first width d1 of the first outer contour line L1 and the second width d2 of the second outer contour line L2 can be further controlled. The maximum distance d3 can be customized for the posterior teeth of different patients or different posterior teeth of the same patient, so that there are teeth to provide support under the jaw pad 20.

[0083] Preferably, the maximum distance d3 is in the range of 1 mm to 3 mm.

[0084] In the present embodiment, the endpoint of each peak segment N is arranged adjacent to the corresponding tip R, that is, the endpoint of the peak segment N and the tip R are matched with each other in position. For example, corresponding to a certain posterior tooth, the endpoint of each peak segment N is closer to the center of the posterior tooth than the corresponding tip R, and the distance between the endpoint of each peak segment N and the tip R remains basically consistent. At this time, corresponding to the posterior teeth of different patients or different posterior teeth of the same patient, the peak segment N is personalized, so that the jaw pad 20 is more matched with the corresponding posterior teeth.

[0085] In addition, the jaw pad 20 includes a plurality of first occlusal surfaces A11 and a plurality of second occlusal surfaces A12 connected one by one at intervals, that is, the jaw pad 20 includes a first occlusal surface A11, a second occlusal surface A12, a first occlusal surface A12, a second occlusal surface A12, and so on connected in sequence.

[0086] The jaw pad 20 at each second occlusal surface A12 has a tendency to retract, and the degree of retraction of the jaw pad 20 at each second occlusal surface A12 is related to the width of the adjacent tooth gap corresponding to the second occlusal surface A12.

[0087] It can be seen that the jaw pad 20 at the second occlusal surface A12 is also customized to correspond to the posterior teeth of different patients or different posterior teeth of the same patient.

[0088] In general, the various parameters of the jaw pad 20 of the present embodiment can be customized according to a single case, and the parameters include the first width d1 of the first part 21 of the jaw pad 20, the second width d2 of the second part 22, the maximum distance d3 between the peak segment N and the reference line M2, the relationship between the end point of each peak segment N and the tip R, the first gap P1, the second gap P2, the peak segment and the trough segment in the first outer contour line L1 and the second outer contour line L2, the connection relationship between the first outer contour line L1 and the second outer contour line L2, etc. In this way, the jaw pad 20 can be more matched with the posterior teeth, and each part of the jaw pad 20 can be supported by teeth underneath.

[0089] Combination Figure 7 An embodiment of the present invention further provides a dental orthodontic appliance assembly 300, comprising the dental orthodontic appliance 100 and the opposing dental orthodontic appliance 200 as described above.

[0090] One of the dental orthodontic appliance 100 and the opposing dental orthodontic appliance 200 is disposed corresponding to the maxillary teeth, and the other one is disposed corresponding to the mandibular teeth.

[0091] The mandibular dental orthodontic appliance 200 includes a mandibular appliance body 201 and a guide portion 203 located on the occlusal surface 202 of the mandibular appliance body 201. When in an occlusal state, the guide portion 203 cooperates with the jaw pad 20 in the mesiodistal direction to achieve horizontal movement of the maxillary teeth or the mandibular teeth.

[0092] exist Figure 7 In the figure, taking the case where the dental orthodontic appliance 200 is arranged corresponding to the mandibular teeth and the opposing orthodontic appliance 200 is arranged corresponding to the maxillary teeth as an example, the dental orthodontic appliance 100 includes a jaw pad 20, and the opposing orthodontic appliance 200 includes a guide portion 203. When in a occluded state, the mesial end of the jaw pad 20 and the distal end of the guide portion 203 abut against each other to achieve horizontal movement of the mandibular teeth, that is, the retraction of the mandibular teeth is achieved at this time.

[0093] Of course, in other embodiments, the jaw pad 20 and the guide portion 203 may be matched in other forms, for example, the distal end of the jaw pad 20 and the proximal end of the guide portion 203 abut against each other to achieve the advancement of the mandibular teeth.

[0094] It is understandable that in order to improve the stability of the cooperation between the jaw pad 20 and the guide portion 203, a friction structure or a concave-convex cooperation structure may be formed at the abutment between the two.

[0095] In summary, in this embodiment, the jaw pad 20 located on the second occlusal surface A12 is designed as a retracted structure, which can increase the proportion of the jaw pad area supported by the teeth. Furthermore, each part of the jaw pad 20 can be supported by the teeth below, thereby avoiding deformation and collapse of the jaw pad 20 due to lack of tooth support below. The smooth transition of the entire side surface 24 of the jaw pad 20 can further improve the strength of the entire jaw pad 20.

[0096] In addition, most of the jaw pad 20 for bearing the occlusal pressure is located in the first area A111 of the first occlusal surface A11, which can improve the stability of the jaw pad 20 under the occlusal pressure.

[0097] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0098] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A dental orthodontic appliance, characterized in that: It includes an appliance body and a jaw pad located on the occlusal surface of the appliance body, the occlusal surface includes a first occlusal surface and a second occlusal surface that are connected, the first occlusal surface is arranged corresponding to the occlusal surface of the teeth, the second occlusal surface is arranged corresponding to the gap between adjacent teeth, and the jaw pad located on the second occlusal surface tends to retract.

2. The dental orthodontic appliance according to claim 1, characterized in that: The junction area of ​​the jaw pad and the occlusal surface forms an outer contour line. In the direction from the buccal surface to the lingual surface of the orthodontic device body, the outer contour line has a width, and the width tends to decrease when the first occlusal surface transitions to the second occlusal surface.

3. The dental orthodontic appliance according to claim 2, characterized in that: The outer contour line is formed by enclosing a plurality of curves, and adjacent curves have a smooth transition.

4. The dental orthodontic appliance according to claim 2, characterized in that: The outer contour line includes a first outer contour line corresponding to the first occlusal surface and a second outer contour line corresponding to the second occlusal surface. The width of the first outer contour line is a first width, the width of the second outer contour line is a second width, and the ratio of the maximum value of the first width to the minimum value of the second width is in the range of 0.15-0.

5.

5. The dental orthodontic appliance according to claim 4, characterized in that: The minimum value of the second width is not less than 0.5 mm, or the minimum value of the second width is in the range of 1 mm to 4 mm, and the minimum value of the first width is greater than or equal to the maximum value of the second width.

6. The dental orthodontic appliance according to claim 2, characterized in that: The outer contour line includes a first outer contour line corresponding to the first occlusal surface, and the first outer contour line corresponding to a tooth includes a connected first peak segment, a first trough segment and a second peak segment, or the first outer contour line corresponding to a tooth includes a connected first trough segment, a first peak segment and a second trough segment.

7. The dental orthodontic appliance according to claim 2, characterized in that: The outer contour line includes a second outer contour line corresponding to the second occlusal surface, the second outer contour line is a trough segment, and the second outer contour line includes a first trough segment close to the lingual surface and a second trough segment close to the buccal surface.

8. The dental orthodontic appliance according to claim 1, characterized in that: The jaw pad is arranged corresponding to multiple posterior teeth, the first occlusal surface includes a first area located in the middle and a second area arranged around the first area, the boundary line between the first area and the second area passes through multiple tips, and the multiple tips correspond to multiple tooth cusps of the posterior teeth respectively. The junction area between the jaw pad and the first occlusal surface forms a first outer contour line, the first outer contour line includes an inner line located in the first area and an outer line located in the second area, and the outer line is connected to the inner line only in the mesiodistal direction of the orthodontic device body.

9. The dental orthodontic appliance according to claim 8, characterized in that: The junction area between the jaw pad and the second occlusal surface forms a second outer contour line, the outer line connects the inner line and the second outer contour line, and the second outer contour line and the outer lines at both ends form a trough section.

10. The dental orthodontic appliance according to claim 9, characterized in that: The inner line includes a peak segment, and the endpoints of two adjacent trough segments on the same side form a reference line. The maximum distance between the peak segment and the reference line on the same side is not less than 0.5 mm, or the maximum distance ranges from 1 mm to 3 mm.

11. The dental orthodontic appliance according to claim 8, characterized in that: The inner line includes wave crest segments, and an end point of each wave crest segment is disposed adjacent to a corresponding tip.

12. The dental orthodontic appliance according to claim 8, characterized in that: The inner line includes a first inner line close to the buccal surface of the orthodontic device body and a second inner line close to the lingual surface of the orthodontic device body, a first gap is provided between the first inner line and the corresponding dividing line, and a second gap is provided between the second inner line and the corresponding dividing line.

13. The dental orthodontic appliance according to claim 12, characterized in that: In the direction from the buccal surface to the lingual surface of the orthodontic appliance body, the minimum value of the first gap is not less than 2 mm, and the minimum value of the second gap is not less than 2 mm.

14. The dental orthodontic appliance according to claim 1, characterized in that: The jaw pad includes an outer contour line formed at the junction area with the occlusal surface, an end face away from the occlusal surface, and a side surface connecting the outer periphery of the end face and the outer contour line. The end face and the side surface are arranged to form a cavity. The orthodontic device body has a cavity for accommodating teeth, and the cavity is connected to the cavity.

15. The dental orthodontic appliance according to claim 14, characterized in that: The side surface is formed by a plurality of curved surfaces, and adjacent curved surfaces have a smooth transition.

16. The dental orthodontic appliance according to claim 14, characterized in that: A plurality of points on the outer contour line form a reference plane, and the side surface is perpendicular to the reference plane, or at least a portion of the side surface forms an acute angle with the reference plane.

17. The dental orthodontic appliance according to claim 14, characterized in that: The shape of the end surface matches the shape of the opposing jaw occlusal surface.

18. The dental orthodontic appliance according to claim 14, characterized in that: The orthodontic appliance also includes a filling portion located within the cavity.

19. The dental orthodontic appliance according to claim 1, characterized in that: The jaw pad comprises a plurality of first occlusal surfaces and a plurality of second occlusal surfaces which are connected one by one at intervals, and the jaw pad at each second occlusal surface has an inward shrinking tendency.

20. A dental orthodontic appliance assembly, characterized in that: It includes a dental orthodontic appliance and an opposing dental orthodontic appliance as described in any one of claims 1 to 19, wherein one of the dental orthodontic appliance and the opposing dental orthodontic appliance is arranged corresponding to maxillary teeth, and the other is arranged corresponding to mandibular teeth, and the opposing dental orthodontic appliance includes an opposing dental appliance body and a guide portion located on the occlusal surface of the opposing dental appliance body, and when in an occlusal state, the guide portion and the jaw pad cooperate with each other in the mesiodistal direction to realize horizontal movement of the maxillary teeth or the mandibular teeth.

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