Silicone dental appliance

Abstract

The utility model discloses a silica gel tooth appliance, including occlusion, labial and buccal stop and tongue stop, the whole occlusion is U shape setting, including corresponding first occlusion of anterior tooth area tooth setting, corresponding second occlusion of premolar setting and corresponding third occlusion of first molar setting, the left and right sides of first occlusion are connected second occlusion and third occlusion in proper order respectively, and first occlusion and second occlusion and third occlusion all include corresponding maxillary bearing surface of maxillary tooth and corresponding mandibular bearing surface of mandibular tooth respectively, when wearing, the maxillary bearing surface of first occlusion exerts a pressure on the tooth to be pressed down, and the mandibular bearing surface of first occlusion and mandibular anterior tooth area tooth form elongation space, the maxillary bearing surface and mandibular bearing surface of second occlusion contact with maxillary premolar and mandibular premolar respectively, and the maxillary bearing surface of third occlusion and maxillary first molar form eruption space.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, more specifically to the field of oral appliances, and particularly to a silicone orthodontic appliance suitable for children in the mixed dentition period. Background Technology

[0002] For early malocclusion in children during their growth and development, especially for children in the mixed dentition period, studies have shown that muscles have a crucial impact on the stability of orthodontic treatment during the developmental stage. In some cases, muscle problems are the cause of oral problems, and ignoring muscle problems may lead to ineffective treatment or relapse after treatment.

[0003] These problems can be addressed with orofacial muscle function training devices. The mechanism involves re-educating the neuromuscular system of the orofacial region to promote normal development of the craniofacial structure and coordinated stability of the orofacial system. This is a treatment method that focuses on the cause of the disease. Current technology typically uses silicone appliances, especially silicone appliances with upper and lower groove tracks. These appliances can overcome muscle dysfunction and guide the upper and lower dentition to the target position, using growth and development to correct malocclusion.

[0004] However, the occlusal portion of existing silicone orthodontic appliances is basically the same as that disclosed in Chinese patent CN202420945260.5: the upper and lower occlusal surfaces of the occlusal portion are almost planar. Such a structure is not suitable for children with crowded high angles, because children with high angles often have underdeveloped mandibles and crowded mandibular teeth, requiring mandibular protraction. However, in actual treatment, jaw position improvement is often slow. Before the jaw position is improved, the mandibular teeth often compensate for the insufficient jaw position by labial inclination of the mandibular anterior teeth in order to be placed in the lower groove track. This will instead lead to clockwise rotation and aggravate the high angle. Utility Model Content

[0005] The technical problem solved by this invention is to overcome the defects of the existing technology and provide a silicone orthodontic appliance that can effectively control vertical growth and development in children with high-angle teeth during the mixed dentition period.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A silicone orthodontic appliance, the silicone orthodontic appliance being generally U-shaped, includes an occlusal portion, a labial / buccal guard, and a lingual guard; the labial / buccal edges of the occlusal portion extend upward and downward respectively to form the labial / buccal guard, and the lingual edges of the occlusal portion extend upward and downward respectively to form the lingual guard, the labial / buccal guard, the occlusal portion, and the lingual guard together form a groove track to accommodate the maxillary and mandibular dentition; the occlusal portion is generally U-shaped and includes a first occlusal portion corresponding to the anterior teeth, a second occlusal portion corresponding to the premolars, and a third occlusal portion corresponding to the first molars, the left and right sides of the first occlusal portion being sequentially connected to the second occlusal portion and the third occlusal portion, the first occlusal portion being connected to the second occlusal portion and the third occlusal portion... Each occlusal portion includes a maxillary bearing surface corresponding to the maxillary teeth and a mandibular bearing surface corresponding to the mandibular teeth. When worn, the maxillary bearing surface of the first occlusal portion interacts with the maxillary anterior teeth to be indented, applying an indentation force to the teeth to be indented. An elongation space is formed between the mandibular bearing surface of the first occlusal portion and the mandibular anterior teeth to be elongated corresponding to the teeth to be indented. The maxillary and mandibular bearing surfaces of the second occlusal portion contact the maxillary premolars and mandibular premolars, respectively. An eruption space is formed between the maxillary bearing surface of the third occlusal portion and the maxillary first molar, allowing the maxillary first molar to erupt. The mandibular first molar occludes on the mandibular bearing surface of the third occlusal portion.

[0008] Preferably, the first occlusal portion is inclined, and the height of the sagittal-forward side of the first occlusal portion from the patient's occlusal plane in the vertical direction is greater than the height of the sagittal-rear side of the first occlusal portion from the patient's occlusal plane in the vertical direction.

[0009] Preferably, the maxillary bearing surface of the first occlusal portion is planar, and the height of the maxillary bearing surface of the first occlusal portion from the patient's occlusal plane in the vertical upward direction gradually decreases from front to back in the sagittal direction; the mandibular bearing surface of the first occlusal portion is planar, and the height of the mandibular bearing surface of the first occlusal portion from the patient's occlusal plane in the vertical upward direction gradually decreases from front to back in the sagittal direction; or, the mandibular bearing surface of the first occlusal portion is an arc surface, which is formed by the mandibular bearing surface of the first occlusal portion being concave towards the opposing jaw.

[0010] Preferably, the maxillary bearing surface of the first occlusal portion is an arc surface, which is formed by the concavity of the maxillary bearing surface of the first occlusal portion toward the opposing jaw; the mandibular bearing surface of the first occlusal portion is an arc surface, which is formed by the concavity of the mandibular bearing surface of the first occlusal portion toward the opposing jaw; or, the mandibular bearing surface of the first occlusal portion is planar, and the height of the mandibular bearing surface of the first occlusal portion from the patient's occlusal plane in the vertical upward direction gradually decreases from the labial side to the lingual side.

[0011] Preferably, the maxillary bearing surface of the first occlusal portion is provided with a groove for stabilizing occlusion at the position of the incisal edge of the maxillary anterior teeth, and / or, the mandibular bearing surface of the first occlusal portion is provided with a groove for stabilizing occlusion at the position of the incisal edge of the mandibular anterior teeth.

[0012] Preferably, the maxillary bearing surface and the mandibular bearing surface of the second occlusal portion are both arranged parallel to the patient's occlusal plane.

[0013] Preferably, the maxillary bearing surface of the second occlusal part is set at an angle of 15°-45° to the patient's occlusal plane, and the maxillary bearing surface of the second occlusal part is inclined downward from the mesial end to the distal end.

[0014] Preferably, the maxillary bearing surface of the third occlusal portion is inclined, and the height of the mesial end of the maxillary bearing surface of the third occlusal portion from the patient's occlusal plane in the vertical upward direction is less than the height of the distal end of the maxillary bearing surface of the third occlusal portion from the patient's occlusal plane in the vertical upward direction; the maxillary bearing surface of the third occlusal portion is planar, and the height of the maxillary bearing surface of the third occlusal portion from the patient's occlusal plane in the vertical upward direction gradually increases from mesial to distal; or, the maxillary bearing surface of the third occlusal portion is an arc surface, which is formed by the concavity of the maxillary bearing surface of the third occlusal portion toward the opposing jaw.

[0015] Preferably, the first occlusal portion, the second occlusal portion, and the third occlusal portion are arranged in a stepped manner, and the first occlusal portion, the second occlusal portion, and the third occlusal portion are respectively arranged parallel to the patient's occlusal plane.

[0016] Preferably, the maxillary bearing surface of the first occlusal portion is higher than the maxillary bearing surface of the second occlusal portion, and the maxillary bearing surface of the first occlusal portion and the maxillary bearing surface of the second occlusal portion have a first preset height difference in the vertical direction; the mandibular bearing surface of the first occlusal portion is higher than the mandibular bearing surface of the second occlusal portion, and the mandibular bearing surface of the first occlusal portion and the mandibular bearing surface of the second occlusal portion have a second preset height difference in the vertical direction; the maxillary bearing surface of the second occlusal portion is higher than the maxillary bearing surface of the third occlusal portion, and the maxillary bearing surface of the second occlusal portion and the maxillary bearing surface of the third occlusal portion have a third preset height difference in the vertical direction.

[0017] Preferably, the range of the first preset height difference, the second preset height difference, and the third preset height difference is 2mm-3mm.

[0018] Preferably, the mandibular bearing surface of the third occlusal portion is at the same height as the mandibular bearing surface of the second occlusal portion; or, the mandibular bearing surface of the third occlusal portion is higher than the mandibular bearing surface of the second occlusal portion, and the mandibular bearing surface of the third occlusal portion and the mandibular bearing surface of the second occlusal portion have a fourth preset height difference in the vertical direction.

[0019] Preferably, the range of the fourth preset height difference is 1mm-2mm.

[0020] Preferably, the maxillary bearing surface of the first occlusal part is set at a first preset angle with the patient's occlusal plane, and the mandibular bearing surface of the first occlusal part is set at a second preset angle with the patient's occlusal plane, wherein the first preset angle is less than or equal to the second preset angle.

[0021] Preferably, the first preset angle range is 15°-45°, and the second preset angle range is 30°-60°.

[0022] The silicone dental appliance provided by this utility model has at least one of the following advantages compared with the prior art:

[0023] (1) This application designs the occlusal portion of the silicone orthodontic appliance in sections, and sets different vertical heights in the first and third occlusal portions respectively. By controlling the vertical height difference and tilt angle, it can achieve the depressing of the maxillary anterior teeth, the elongation of the mandibular anterior teeth and the induction of the eruption of the maxillary first molar, and adjust the occlusal plane, thereby achieving the effect of mandibular reverse rotation and treatment of high angle. At the same time, it ensures stable contact between the second occlusal portion and the premolars, so that the upper and lower jaw occlusion is relatively stable during the orthodontic process.

[0024] (2) This application sets the first preset angle between the maxillary bearing surface of the first occlusal part and the occlusal plane to be less than or equal to the second preset angle between the mandibular bearing surface of the first occlusal part and the occlusal plane; this is beneficial to ensure that the maxillary anterior teeth are preferentially depressed and the mandibular anterior teeth are extended in coordination, so that after the silicone orthodontic appliance is removed, the patient's anterior teeth area can be occluded, avoiding open bite, so as to complete the jaw position adjustment. Attached Figure Description

[0025] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same numerical reference numerals are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0026] Figure 1 This is a top view schematic diagram of a silicone dental appliance according to Embodiment 1 of this utility model;

[0027] Figure 2and Figure 3 This is a side view of a silicone dental appliance according to Embodiment 1 of this utility model;

[0028] Figure 4 This is a side view schematic diagram of another silicone orthodontic appliance in Embodiment 1 of this utility model;

[0029] Figure 5 This is a side view schematic diagram of another silicone dental appliance in Embodiment 1 of this utility model;

[0030] Figure 6 This is a side view schematic diagram of another silicone orthodontic appliance in Embodiment 1 of this utility model;

[0031] Figure 7 This is a side view schematic diagram of a silicone dental appliance according to Embodiment 2 of this utility model;

[0032] Figure 8 This is a side view schematic diagram of another silicone dental appliance in Embodiment 2 of this utility model. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of the invention. However, the technical solutions claimed by this utility model can be implemented even without these technical details and with various variations and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of this utility model.

[0034] The directional terms "up," "down," "left," and "right" used in this document refer to the directions shown in the accompanying drawings and do not imply any specific limitation. Unless otherwise explicitly stated or limited, the term "connection" in this document should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part of a structure. It can refer to a direct connection or an indirect connection through an intermediate medium.

[0035] In the various embodiments of this invention, the term "posterior tooth region" is defined according to the classification of teeth in the 2nd edition of *Introduction to Stomatology*, published by Peking University Medical Press, pages 36-38. It includes premolars and molars, teeth marked as 4-8 using the FDI notation, and teeth marked as 1-3 using the FDI notation for the anterior tooth region. The teeth in the anterior tooth region include the central incisors, lateral incisors, and canines.

[0036] It should be noted that the method of representing tooth position in this application can be applied to both primary dentition and mixed dentition.

[0037] The following will provide a detailed explanation in conjunction with the illustrations.

[0038] Example 1

[0039] Please refer to Figures 1 to 3 As shown, the silicone orthodontic appliance 100 of this application is generally U-shaped, including an occlusal portion 1, a labial / buccal guard 2, and a lingual guard 3. The labial / buccal edges of the occlusal portion 1 extend upward and downward respectively to form the labial / buccal guard 2, which can block the contact between the labial / buccal muscles and the dental arch, thereby eliminating the influence of muscles on orthodontic treatment. The lingual edges of the occlusal portion 1 extend upward and downward respectively to form the lingual guard 3. The labial / buccal guard 2, the occlusal portion 1, and the lingual guard 3 together form a groove track to accommodate the maxillary and mandibular dental arches, which can induce the maxillary and mandibular dental arches to grow in the groove track. The occlusal portion 1 is generally U-shaped, including a first occlusal portion 11 corresponding to the anterior teeth, a second occlusal portion 12 corresponding to the premolars, and a third occlusal portion 13 corresponding to the first molars. The left and right sides of the first occlusal portion 11 are respectively connected to the second occlusal portion 12 and the third occlusal portion 13. The first occlusal portion 11, the second occlusal portion 12, and the third occlusal portion 13 are connected to each other. Each includes a maxillary bearing surface corresponding to the maxillary teeth and a mandibular bearing surface corresponding to the mandibular teeth; when worn, the maxillary bearing surface 111 of the first occlusal part interacts with the tooth to be depressed in the maxillary anterior region, applying a depressing force to the tooth to be depressed, and an elongation space V1 is formed between the mandibular bearing surface 112 of the first occlusal part and the tooth to be elongated in the mandibular anterior region corresponding to the tooth to be depressed; the maxillary bearing surface 121 of the second occlusal part and The mandibular bearing surface contacts the maxillary premolar and the mandibular premolar respectively; the maxillary bearing surface 131 of the third occlusal part forms an eruption space V2 between the maxillary first molar and the maxillary first molar. It should be noted that when the maxillary first molar has not erupted, the "maxillary first molar" that forms the eruption space V2 with the maxillary first molar can correspond to the position where the maxillary first molar is about to erupt; the mandibular first molar occludes on the mandibular bearing surface 132 of the third occlusal part 13.

[0040] This application designs the occlusal portion 1 of the silicone orthodontic appliance 100 in sections, setting different vertical heights in the first occlusal portion 11 and the third occlusal portion 13. By controlling the vertical height difference and tilt angle, it is possible to depress the maxillary anterior teeth, elongate the mandibular anterior teeth, and induce the eruption of the maxillary first molar, thereby adjusting the occlusal plane S and achieving the effects of mandibular reverse rotation and treatment of high angle. At the same time, it ensures stable contact between the second occlusal portion 12 and the premolars, so that the occlusion of the upper and lower jaws is relatively stable during the orthodontic process.

[0041] Further, see Figure 1 As shown, to enhance occlusal stability and achieve precise indentation of the maxillary anterior teeth, some indentations 110 can be provided on the maxillary bearing surface 111 of the first occlusal part corresponding to the incisal edge of the maxillary anterior teeth. These indentations 110 are provided one-to-one with the teeth in the maxillary anterior part. The indentations 110 are formed by the inward concavity of the maxillary bearing surface 111 of the first occlusal part toward the mandible. The inner contour shape of the indentation matches the incisal edge of the maxillary anterior teeth corresponding to the indentation 110 and the outer contour shape of a section adjacent to the incisal edge. Thus, while indenting the maxillary anterior teeth, it can also ensure that they are in the target position in the sagittal direction. The target position can be a step-by-step target position set according to the orthodontic process, or it can be the patient's final target position.

[0042] It is understood that, in another embodiment, a groove (not shown) for stabilizing occlusion is provided on the mandibular bearing surface 112 of the first occlusal portion corresponding to the incisal edge position of the mandibular anterior teeth. Similarly, these grooves are provided one-to-one with the teeth of the mandibular anterior region. These grooves are formed by the inward concavity of the mandibular bearing surface 112 of the first occlusal portion toward the maxillary direction. The inner contour shape of the concavity matches the outer contour shape of the incisal edge of the mandibular anterior teeth corresponding to these grooves and a section adjacent to the incisal edge. When the mandibular anterior teeth are elongated to the target position, they can stably match the groove 110 of the mandibular bearing surface 112 of the first occlusal portion, thereby ensuring that the mandibular anterior teeth can also be in the target position in the sagittal direction.

[0043] Preferably, the maxillary bearing surface 111 and the mandibular bearing surface 112 of the first occlusal part can be provided with concave 110 at the same time, so that the occlusion is more stable and the sagittal direction can be guided to the target position when the upper anterior teeth are depressed and the lower anterior teeth are elongated.

[0044] Furthermore, the first occlusal portion 11 is inclined, and the height of the sagittal-forward side of the first occlusal portion 11 from the patient's occlusal plane S in the vertical direction is greater than the height of the sagittal-rear side of the first occlusal portion 11 from the patient's occlusal plane S in the vertical direction. The sagittal-forward end of the first occlusal portion 11 is higher than the sagittal-rear end, forming an inclined surface that slopes downward from front to back along the sagittal direction.

[0045] In this embodiment, see Figure 2 and Figure 3As shown in the figure, it should be noted that, in the figure, label 10 indicates the maxillary dentition and label 20 indicates the mandibular dentition; there may be no obvious dividing line between the first occlusal part 11, the second occlusal part 12 and the third occlusal part 13. The dotted line in the figure is only used to indicate the boundary between them, and does not mean that they are separate, nor does it indicate that there is an obvious dividing line between them. The maxillary bearing surface 111 of the first occlusal portion is planar, that is, the maxillary bearing surface 111 of the first occlusal portion is a downwardly inclined plane from front to back along the sagittal direction; the height of the maxillary bearing surface 111 of the first occlusal portion from the patient's occlusal plane S in the vertical direction gradually and uniformly decreases from front to back along the sagittal direction. In this embodiment, the height of the sagittal-forward side of the first occlusal portion 11 from the patient's occlusal plane S in the vertical direction is as shown by h1 in the figure. In this embodiment, the sagittal-rear side of the first occlusal portion 11 is set at the same height as the patient's occlusal plane S in the vertical direction, that is, the height of the sagittal-rear side of the first occlusal portion 11 from the patient's occlusal plane S in the vertical direction is 0. It can be understood that in some embodiments, the sagittal-rear side of the first occlusal portion 11 may also be set at a non-equal height to the patient's occlusal plane S in the vertical direction, that is, the height of the sagittal-rear side of the first occlusal portion 11 from the patient's occlusal plane S in the vertical direction may be greater than 0 and less than h1. Furthermore, to ensure that an elongation space V1 is provided at the position of the mandibular anterior teeth for the mandibular anterior teeth to extend, so that after the silicone braces are removed after treatment, the upper and lower jaws of the anterior teeth can bite together without open bite, the mandibular bearing surface 112 of the first occlusal part is also inclined. In this embodiment, the mandibular bearing surface 112 of the first occlusal part can be an inclined plane. The height of the mandibular bearing surface 112 of the first occlusal part from the patient's occlusal plane S in the vertical direction gradually decreases from front to back along the sagittal direction. That is, the mandibular bearing surface 112 of the first occlusal part is also a downward inclined plane in the sagittal direction from front to back. The height of the mandibular bearing surface 112 of the first occlusal part from the patient's occlusal plane S in the vertical direction gradually and uniformly decreases from front to back along the sagittal direction.

[0046] It should be noted that the occlusal plane S is a reference plane and also an imaginary plane. It refers to the imaginary plane formed by the mesial contact point of the maxillary central incisor to the mesial buccal apex of the bilateral first molars. This occlusal plane S is parallel to the nasolabial line (the line connecting the midpoint of the nasal ala to the midpoint of the tragus) and basically bisects the interocclusal distance. For children in the mixed dentition period, the nasolabial line can be used as a reference when the first molars have not erupted or have not fully erupted.

[0047] Continuing with the explanation, in this embodiment, both the maxillary bearing surface 121 and the mandibular bearing surface of the second occlusal portion are arranged parallel to the patient's occlusal plane S. This arrangement ensures that when the occlusal plane S is rotated in reverse, the upper and lower premolars can stably occlude on the second occlusal portion 12, thereby enabling the silicone orthodontic appliance 100 to remain stable in the patient's mouth during orthodontic treatment.

[0048] It is understood that, in some embodiments, the maxillary bearing surface 121 of the second occlusal part can also be set at an angle γ with the patient's occlusal plane S. To reduce the foreign body sensation in the patient's mouth and decrease discomfort after wearing the device, the angle γ should not be set too large. The range of the angle γ can be 15°-45°. In some specific embodiments, it can be set to 15°, 30°, or 45°, and the maxillary bearing surface 121 of the second occlusal part is inclined downward from the mesial end to the distal end. Alternatively, the maxillary bearing surface 111 of the first occlusal part, the maxillary bearing surface 121 of the second occlusal part, and the maxillary bearing surface 131 of the third occlusal part can all have the same angle with the patient's occlusal plane S. Furthermore, the maxillary bearing surface 111 of the first occlusal part, the maxillary bearing surface 121 of the second occlusal part, and the maxillary bearing surface 131 of the third occlusal part are connected end to end, forming an inclined plane as a whole. See reference. Figure 4 As shown. Alternatively, the angles between the maxillary bearing surface 111 of the first occlusal portion, the maxillary bearing surface 121 of the second occlusal portion, and the maxillary bearing surface 131 of the third occlusal portion and the patient's occlusal plane S may be different. Alternatively, two of the maxillary bearing surfaces of the first occlusal portion, the second occlusal portion, and the third occlusal portion may have the same angle with the patient's occlusal plane S, and the other maxillary bearing surface may have a different angle. Specifically, in one embodiment, the angles between the maxillary bearing surface 111 of the first occlusal portion and the maxillary bearing surface 121 of the second occlusal portion and the patient's occlusal plane S may be the same, while the angle between the maxillary bearing surface 131 of the third occlusal portion and the patient's occlusal plane S may be different. The angles between them are different; in another embodiment, the angles between the maxillary bearing surface 111 of the first occlusal portion and the maxillary bearing surface 131 of the third occlusal portion and the patient's occlusal plane S may be the same, while the angle between the maxillary bearing surface 121 of the second occlusal portion and the patient's occlusal plane S may be different; in yet another embodiment, the angles between the maxillary bearing surface 121 of the second occlusal portion and the maxillary bearing surface 131 of the third occlusal portion and the patient's occlusal plane S may be the same, while the angle between the maxillary bearing surface 111 of the first occlusal portion and the patient's occlusal plane S may be different.

[0049] Please continue reading for further explanation. Figure 3As shown, in this embodiment, the maxillary bearing surface 131 of the third occlusal portion is inclined. The height of the mesial end of the maxillary bearing surface 131 of the third occlusal portion from the patient's occlusal plane S in the vertical upward direction is less than the height h2 of the distal end of the maxillary bearing surface 131 of the third occlusal portion from the patient's occlusal plane S in the vertical upward direction. Specifically, the maxillary bearing surface 131 of the third occlusal portion is planar, and the maxillary bearing surface 131 of the third occlusal portion is a downwardly inclined plane from the mesial to the distal lingual side. It should be noted that, as mentioned above, the occlusal plane S is an imaginary plane formed by the mesial contact point of the maxillary central incisor to the mesial buccal apex of the bilateral first molars. In this embodiment, the third occlusal portion 13 is located below the occlusal plane S, and the height h2 of the mesial end of the maxillary bearing surface 131 of the third occlusal portion from the patient's occlusal plane S in the vertical upward direction is less than the height h2 of the distal end of the maxillary bearing surface 131 of the third occlusal portion from the patient's occlusal plane S in the vertical upward direction. The height of the occlusal plane S gradually increases uniformly from mesial to distal. The height of the distal end of the maxillary bearing surface 131 of the third occlusal part from the patient's occlusal plane S in the vertical direction is shown as h2 in the figure. In this embodiment, the mesial end of the maxillary bearing surface 131 of the third occlusal part is set at the same height as the patient's occlusal plane S in the vertical direction, i.e., the height of the mesial end of the maxillary bearing surface 131 of the third occlusal part from the patient's occlusal plane S in the vertical direction is 0. It can be understood that in some embodiments, the mesial end of the maxillary bearing surface 131 of the third occlusal part may not be at the same height as the patient's occlusal plane S in the vertical direction, i.e., the height of the mesial end of the maxillary bearing surface 131 of the third occlusal part from the patient's occlusal plane S in the vertical direction may be greater than 0 and less than h2.

[0050] In this embodiment, there is no height difference between the mandibular bearing surface 132 of the third occlusal portion 13 and the mandibular bearing surface 122 of the second occlusal portion 12, and the mandibular bearing surface 132 of the third occlusal portion 13 is arranged parallel to the occlusal plane S.

[0051] In some implementation methods, please refer to Figure 6 As shown, the maxillary bearing surface 111 of the first occlusal portion is arc-shaped, and the arc surface is formed by the maxillary bearing surface 111 of the first occlusal portion concave towards the opposing jaw; this facilitates guiding the maxillary anterior teeth to bite within the arc-shaped structure; furthermore, the arc-shaped structure may also be provided with a plurality of concave structures that match the maxillary anterior teeth respectively, for positioning while guiding; furthermore, the mandibular bearing surface 112 of the first occlusal portion may also be arc-shaped, and the arc surface is formed by the mandibular bearing surface 112 of the first occlusal portion concave towards the opposing jaw, similarly facilitating guiding the mandibular anterior teeth to bite within the arc-shaped structure; furthermore, the arc-shaped structure may also be provided with a plurality of concave structures that match the mandibular anterior teeth respectively, for positioning while guiding.

[0052] It is understood that the maxillary bearing surface 131 and mandibular bearing surface 132 of the third occlusal portion can also be set as arc-shaped structures. The arc-shaped structure of the mandibular bearing surface 132 of the third occlusal portion can be set to match the outer contour shape of the mesial occlusal surface segment of the mandibular first molar. For the maxillary first molar, its fully erupted shape and size can be predicted, for example, through a large amount of tooth data. Therefore, the arc-shaped structure of the maxillary bearing surface 131 of the third occlusal portion can also be set to match the predicted outer contour shape of the mesial occlusal surface segment of the maxillary first molar.

[0053] It is understood that in some embodiments, when the maxillary bearing surface 111 of the first occlusal portion is planar, the mandibular bearing surface 112 of the first occlusal portion can be configured as an arcuate surface; or, when the maxillary bearing surface 111 of the first occlusal portion is arcuate, the mandibular bearing surface 112 of the first occlusal portion can be configured as a planar surface. In still other embodiments, when the maxillary bearing surface 131 of the third occlusal portion is arcuate, the mandibular bearing surface 132 of the third occlusal portion 13 can be configured as a planar surface; or, when the maxillary bearing surface 131 of the third occlusal portion is planar, the mandibular bearing surface 132 of the third occlusal portion 13 can be configured as an arcuate surface. These embodiments are all feasible, and this application does not impose any limitations.

[0054] Further reading is available here. Figure 5 As shown, the maxillary bearing surface 111 of the first occlusal part is set at a first preset angle α with the patient's occlusal plane S, and the mandibular bearing surface 112 of the first occlusal part is set at a second preset angle β with the patient's occlusal plane S. The first preset angle α is less than or equal to the second preset angle β. Setting the first preset angle α to be less than or equal to the second preset angle β helps ensure that the maxillary anterior teeth are preferentially intruded, and the mandibular anterior teeth are extended accordingly, so that the patient's anterior teeth can occlude after the silicone orthodontic appliance is removed, avoiding an open bite. Furthermore, to reduce the foreign body sensation in the patient's mouth and reduce discomfort after wearing the appliance, the first and second preset angles should not be set too large. In this application, the range of the first preset angle α is 15°-45°, and the range of the second preset angle β is 30°-60°. In some specific embodiments, the first preset angle α is set to be less than the second preset angle β. For example, the first preset angle α is 15° and the second preset angle β is 30°; or the first preset angle α is 30° and the second preset angle β is 45°; or the first preset angle α is 45° and the second preset angle β is 60°. In other specific embodiments, the first preset angle α is equal to the second preset angle β, for example, both are 30°, 40°, or 45°.

[0055] Example 2

[0056] To achieve the inventive objective of this application, please refer to... Figure 7 and Figure 8 As shown, this application also provides another embodiment of a silicone orthodontic appliance 100. This embodiment differs from Embodiment 1 in that: in Embodiment 1, the first occlusal portion 11, the second occlusal portion 12, and the third occlusal portion 13 are inclined. The inclined surface of the maxillary bearing surface 111 of the first occlusal portion acts on the maxillary anterior teeth, applying a depressing force to the maxillary anterior teeth. The elongation space is formed between the inclined surface of the mandibular bearing surface 112 of the first occlusal portion and the mandibular anterior teeth. The eruption space is formed between the inclined surface of the maxillary bearing surface 131 of the third occlusal portion and the maxillary first molar. In this embodiment, the first occlusal portion 11, the second occlusal portion 12, and the third occlusal portion 13 are arranged in a stepped shape. The upper stepped surface of the maxillary bearing surface 111 of the first occlusal portion acts on the maxillary anterior teeth, applying a depressing force to the maxillary anterior teeth. The lower stepped surface of the mandibular bearing surface 112 of the first occlusal portion forms the elongation space between the mandibular anterior teeth. The upper stepped surface of the maxillary bearing surface 131 of the third occlusal portion forms the eruption space between the maxillary first molar. This will be described in detail below.

[0057] In this embodiment, the first occlusal portion 11, the second occlusal portion 12, and the third occlusal portion 13 are arranged in a stepped manner, and the first occlusal portion 11, the second occlusal portion 12, and the third occlusal portion 13 are respectively arranged parallel to the patient's occlusal plane. Furthermore, the maxillary bearing surface 111 of the first occlusal portion is higher than the maxillary bearing surface 121 of the second occlusal portion, and the maxillary bearing surface 111 of the first occlusal portion and the maxillary bearing surface 121 of the second occlusal portion have a first preset height difference D1 in the vertical direction; the mandibular bearing surface 112 of the first occlusal portion is higher than the mandibular bearing surface 122 of the second occlusal portion, and the mandibular bearing surface 112 of the first occlusal portion and the mandibular bearing surface 122 of the second occlusal portion have a second preset height difference D2 in the vertical direction; the maxillary bearing surface 121 of the second occlusal portion is higher than the maxillary bearing surface 131 of the third occlusal portion, and the maxillary bearing surface 121 of the second occlusal portion and the maxillary bearing surface 131 of the third occlusal portion have a third preset height difference D3 in the vertical direction. Through the stepped arrangement of the height difference, the upper stepped surface of the maxillary bearing surface 131 of the third occlusal part forms the eruption space between the maxillary first molar and the maxillary first molar to guide the eruption of the maxillary first molar; the upper stepped surface of the maxillary bearing surface 111 of the first occlusal part acts on the maxillary anterior teeth to apply a depressing force to them; the lower stepped surface of the mandibular bearing surface 112 of the first occlusal part forms the elongation space between the mandibular anterior teeth and the mandibular bearing surface.

[0058] Furthermore, the first preset height difference D1, the second preset height difference D2, and the third preset height difference D3 can be approximately equal, with a height difference range of 2mm-3mm. An excessively large height difference range will cause discomfort to the patient, while an excessively small height difference range will result in poor counter-rotation effect on the occlusal plane. In some specific embodiments, the first preset height difference D1, the second preset height difference D2, and the third preset height difference D3 can be set to 2mm, 2.5mm, or 3mm, respectively.

[0059] In one embodiment, please refer to Figure 7 As shown, for cases where the mandibular first molar is normal and does not need to continue elongating, the mandibular bearing surface 132 of the third occlusal portion 13 and the mandibular bearing surface 122 of the second occlusal portion 12 can be set at the same height and parallel to the occlusal plane.

[0060] In another embodiment, please refer to Figure 8 As shown, for cases where the mandibular first molar is underdeveloped and space needs to be reserved for further elongation of the mandibular first molar, the mandibular bearing surface 132 of the third occlusal portion 13 can be set higher than the mandibular bearing surface 122 of the second occlusal portion 12, and the mandibular bearing surface 132 of the third occlusal portion 13 and the mandibular bearing surface 122 of the second occlusal portion 12 have a fourth preset height difference D4 in the vertical direction. The fourth preset height difference D4 is set according to the amount of elongation required for the mandibular first molar.

[0061] Specifically, the range of the fourth preset height difference D4 can be 1mm-2mm, and in some specific embodiments, it can be 1mm, 1.5mm or 2mm; such a height difference setting is beneficial to induce the elongation of the mandibular first molar, which is slightly higher than the premolar, thereby guiding the patient's Spee curve to tend towards a standard low curvature arc.

[0062] It should be noted that the above embodiments can be freely combined as needed to form different new implementation schemes without causing contradictions. All implementation schemes formed by such combinations are within the protection scope of this application. In order to save space in the application text, they will not be described in detail here.

[0063] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the inventive principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this application.

[0064] Similarly, the above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A silicone orthodontic appliance suitable for high-angle cases in children during the mixed dentition period whose maxillary first molar has not erupted or has not fully erupted, characterized in that, The silicone orthodontic appliance is U-shaped in general and includes an occlusal portion, a labial / cheek guard, and a lingual guard. The labial and buccal edges of the occlusal portion extend upward and downward respectively to form labial and buccal guards, and the lingual edges of the occlusal portion extend upward and downward respectively to form lingual guards. The labial and buccal guards, the occlusal portion, and the lingual guards together enclose and form a groove track that accommodates the maxillary and mandibular dentition. The occlusal portion is U-shaped and includes a first occlusal portion corresponding to the front teeth, a second occlusal portion corresponding to the premolars, and a third occlusal portion corresponding to the first molars. The left and right sides of the first occlusal portion are connected to the second occlusal portion and the third occlusal portion respectively. The first occlusal portion, the second occlusal portion, and the third occlusal portion each include a maxillary bearing surface corresponding to the maxillary teeth and a mandibular bearing surface corresponding to the mandibular teeth. When worn, the maxillary bearing surface of the first occlusal part interacts with the tooth to be indented in the maxillary anterior region, applying an indentation force to the tooth to be indented. An elongation space is formed between the mandibular bearing surface of the first occlusal part and the tooth to be elongated in the mandibular anterior region corresponding to the tooth to be indented, allowing the tooth to be elongated to elongate. The maxillary and mandibular bearing surfaces of the second occlusal part contact the maxillary premolar and mandibular premolar, respectively. An eruption space is formed between the maxillary bearing surface of the third occlusal part and the maxillary first molar, allowing the maxillary first molar to erupt. The mandibular first molar occludes on the mandibular bearing surface of the third occlusal part.

2. The clear aligner of claim 1, wherein, The first occlusal portion is inclined, and the vertical height of the sagittal anterior side of the first occlusal portion from the patient's occlusal plane is greater than the vertical height of the sagittal posterior side of the first occlusal portion from the patient's occlusal plane.

3. The clear aligner of claim 2, wherein, The maxillary bearing surface of the first occlusal part is planar, and the height of the maxillary bearing surface of the first occlusal part from the patient's occlusal plane in the vertical direction gradually decreases from front to back in the sagittal direction; the mandibular bearing surface of the first occlusal part is planar, and the height of the mandibular bearing surface of the first occlusal part from the patient's occlusal plane in the vertical direction gradually decreases from front to back in the sagittal direction; or, the mandibular bearing surface of the first occlusal part is an arc surface, which is formed by the mandibular bearing surface of the first occlusal part being concave towards the opposing jaw.

4. The clear aligner of claim 2, wherein, The maxillary bearing surface of the first occlusal part is an arc surface, which is formed by the concavity of the maxillary bearing surface of the first occlusal part toward the opposing jaw; the mandibular bearing surface of the first occlusal part is an arc surface, which is formed by the concavity of the mandibular bearing surface of the first occlusal part toward the opposing jaw, or the mandibular bearing surface of the first occlusal part is planar, and the height of the mandibular bearing surface of the first occlusal part from the patient's occlusal plane in the vertical upward direction gradually decreases from the labial side to the lingual side.

5. The silicone dental appliance according to any one of claims 1 to 4, characterized in that, The maxillary bearing surface of the first occlusal portion is provided with a groove for stabilizing occlusion at the position of the incisal edge of the maxillary anterior teeth, and / or the mandibular bearing surface of the first occlusal portion is provided with a groove for stabilizing occlusion at the position of the incisal edge of the mandibular anterior teeth.

6. The silicone dental aligner of any one of claims 2-4, wherein, The maxillary and mandibular bearing surfaces of the second occlusal portion are both set parallel to the patient's occlusal plane.

7. The silicone orthodontic appliance according to any one of claims 2-4, characterized in that, The maxillary bearing surface of the second occlusal part is set at an angle of 15°-45° with the patient's occlusal plane, and the maxillary bearing surface of the second occlusal part is set downward from the mesial end to the distal end.

8. The silicone dental aligner of any one of claims 2-4, wherein, The maxillary bearing surface of the third occlusal part is inclined, and the height of the mesial end of the maxillary bearing surface of the third occlusal part from the patient's occlusal plane in the vertical upward direction is less than the height of the distal end of the maxillary bearing surface of the third occlusal part from the patient's occlusal plane in the vertical upward direction; the maxillary bearing surface of the third occlusal part is planar, and the height of the maxillary bearing surface of the third occlusal part from the patient's occlusal plane in the vertical upward direction gradually increases from the mesial to the distal direction; or, the maxillary bearing surface of the third occlusal part is an arc surface, and the arc surface is formed by the concavity of the maxillary bearing surface of the third occlusal part toward the opposing jaw.

9. The clear aligner of claim 1, wherein, The first occlusal portion, the second occlusal portion, and the third occlusal portion are arranged in a stepped manner, and the first occlusal portion, the second occlusal portion, and the third occlusal portion are respectively arranged parallel to the patient's occlusal plane.

10. The clear aligner of claim 9, wherein, The maxillary bearing surface of the first occlusal portion is higher than the maxillary bearing surface of the second occlusal portion, and the maxillary bearing surface of the first occlusal portion and the maxillary bearing surface of the second occlusal portion have a first preset height difference in the vertical direction. The mandibular bearing surface of the first occlusal portion is higher than the mandibular bearing surface of the second occlusal portion, and the mandibular bearing surface of the first occlusal portion and the mandibular bearing surface of the second occlusal portion have a second preset height difference in the vertical direction. The maxillary bearing surface of the second occlusal portion is higher than the maxillary bearing surface of the third occlusal portion, and the maxillary bearing surface of the second occlusal portion and the maxillary bearing surface of the third occlusal portion have a third preset height difference in the vertical direction.

11. The clear aligner of claim 10, wherein, The ranges of the first preset height difference, the second preset height difference, and the third preset height difference are all 2mm-3mm.

12. The silicone dental aligner of claim 10 or 11, wherein, The mandibular bearing surface of the third occlusal part is at the same height as the mandibular bearing surface of the second occlusal part; or, the mandibular bearing surface of the third occlusal part is higher than the mandibular bearing surface of the second occlusal part, and the mandibular bearing surface of the third occlusal part and the mandibular bearing surface of the second occlusal part have a fourth preset height difference in the vertical direction.

13. The clear aligner of claim 12, wherein, The range of the fourth preset height difference is 1mm-2mm.

14. The silicone dental aligner of claim 1, wherein, The maxillary bearing surface of the first occlusal part is set at a first preset angle with the patient's occlusal plane, and the mandibular bearing surface of the first occlusal part is set at a second preset angle with the patient's occlusal plane, wherein the first preset angle is less than or equal to the second preset angle.

15. The clear aligner of claim 14, wherein, The first preset angle range is 15°-45°, and the second preset angle range is 30°-60°.

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