Occlusion pad device for distal upright impacted teeth
By designing a occlusal pad device, the problems of poor adhesion and easy detachment of the ultra-elastic nickel-titanium archwire on the occlusal surface were solved, achieving stable fixation of the archwire and effective guidance for distal uprighting of mesial impacted molars.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2026-03-06
AI Technical Summary
Traditional methods for treating distally impacted teeth using highly elastic nickel-titanium archwires without exposing the crown suffer from poor adhesion and susceptibility to occlusal interference, resulting in the risk of dislodgement.
Design an occlusal pad device, including a first region that wraps around the lingual cusps, a second region that wraps around the buccal cusps and contacts the central fossa of the opposing tooth, and a third region that connects to an archwire fixation member. The third region is located in the middle of the occlusal pad, and the top surface of the third region is higher than the first region. The archwire fixation member is fixed to the middle of the bottom surface of the occlusal pad. The middle of the occlusal pad reduces the stress and improves the bonding stability.
It improves the adhesion of the archwire, prevents it from falling off, and ensures that the archwire can effectively guide the mesial impacted molars to distal upright position.
Smart Images
Figure CN223969165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oral and dental orthodontic technology, and in particular to an occlusal pad device for distally impacted teeth. Background Technology
[0002] Completely impacted mesial molars are most commonly found in the mandibular second and third molars, where the crown is not exposed in the oral cavity. When performing traction to straighten the teeth, it is necessary to consider both the clinical exposure and selection of the force application point and the appropriate direction of force application.
[0003] Traditionally, the upright method involves surgical intervention, which involves flapping the impacted tooth to expose the crown portion. Force-bearing attachments, such as buccal tubes and impacted tooth traction chains, are then bonded to the distal or buccal surfaces of the crown. With implant anchorage at the mandibular ramus or dental arch anchorage, a distal force is applied to the force-bearing attachments, thereby guiding the mesial impacted molar to distal upright position.
[0004] In this approach, besides the trauma to the patient during the initial fenestration, the bonded attachments may also detach due to limitations, raising the possibility of needing to perform another fenestration. Factors that may cause the bonded attachments to detach include the fact that the procedure site is located at the distal end of the dental arch, the clinical field of view is limited, the operating space is limited, and bleeding or exudate from the wound can affect the bonding strength.
[0005] Therefore, without exposing the crown surface, one end of a highly elastic nickel-titanium archwire is inserted mesially into the impacted tooth crown (suitable for horizontal impaction) or into the occlusal fissure of the impacted tooth crown (suitable for mesial impaction), while the other end is fixed to the occlusal surface of the anterior anchorage molar to provide distal upright prying force for the impacted tooth. The disadvantages of this method with highly elastic nickel-titanium archwires are twofold: firstly, fixing the archwire to the occlusal surface of the anchorage molar presents bonding difficulties; secondly, it is easily affected by occlusal interference from the opposing teeth. Utility Model Content
[0006] The purpose of this invention is to provide an occlusal pad device for distally impacted teeth, solving the technical problem in the prior art where the use of ultra-elastic nickel-titanium archwires has poor adhesion to the occlusal surface and is prone to falling off due to occlusal interference.
[0007] This utility model provides an occlusal pad device for distally upright impacted teeth, including an occlusal pad configured to be bonded to the anchorage tooth. The occlusal pad includes a first region and a second region. The first region is configured to cover the lingual cusp, and the second region is configured to cover the buccal cusp and contact the central fossa of the opposing tooth.
[0008] The first and second regions are also configured such that, with the occlusal pad bonded to the anchorage tooth, the top surface of the second region is higher than the top surface of the first region;
[0009] The bottom surface of the mat also includes a third region located in the middle of the mat, and the third region is connected to at least one archwire fastener.
[0010] In an optional embodiment, with the occlusal pad bonded to the anchoring tooth, the third region of the occlusal pad is configured to form a gap with the occlusal surface of the anchoring tooth that can accommodate the archwire fixation member.
[0011] In an alternative implementation, the third region extends along the mesial direction to both ends of the mat.
[0012] In an alternative embodiment, the third region forms a funnel-shaped opening at both ends of the mat.
[0013] In an alternative implementation, the third region is connected to at least two bowwire fasteners.
[0014] In an alternative implementation, at least two bowwire fixing elements are distributed along the mesiodistal direction.
[0015] In an optional implementation, the minimum width of the third region along the buccal-tongue direction is not less than 4 millimeters.
[0016] In an alternative embodiment, the bowwire fastener is bonded to the third region.
[0017] In an optional embodiment, the first and second regions of the occlusal pad are configured to be bonded to the occlusal surface of the anchorage tooth by means of an adhesive resin.
[0018] In an optional embodiment, the mat is a self-curing plastic mat.
[0019] The occlusal splint device for distally impacted teeth provided by this utility model has the following beneficial effects: the second region, which covers the buccal cusp, contacts the central fossa of the opposing tooth. Furthermore, when the occlusal splint is bonded to the anchor tooth, the top surface of the second region is higher than the top surface of the first region. This elevates the buccal cusp, allowing for earlier contact between the buccal cusp and the opposing tooth, thus reducing stress on the middle of the occlusal splint. The archwire fixation element is connected to the third region of the occlusal splint, which is located on the bottom surface and in the middle of the splint. Reduced stress on the middle of the splint avoids affecting the connection effect of the archwire fixation element, preventing archwire dislocation. This allows for better archwire bonding, preventing interference and detachment, and ensuring the archwire effectively guides the mesial impacted molars to distally become upright. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the distal structure of the occlusal pad device for distally erect impacted teeth provided in an embodiment of the present invention;
[0022] Figure 2 A bottom view of the occlusal pad device for distally impacted teeth provided in an embodiment of this utility model;
[0023] Figure 3 A top view of the occlusal pad device for distally impacted teeth provided in an embodiment of this utility model;
[0024] Figure 4 This is a schematic diagram of the buccal structure of the occlusal pad device for distally impacted teeth provided in an embodiment of the present invention.
[0025] Icons: 100 - Occlusal pad; 110 - First zone; 120 - Second zone; 130 - Third zone; 131 - Opening; 200 - Archwire fixation; 300 - Archwire; 400 - Auxiliary tooth; 500 - Opposing tooth; 600 - Impacted tooth. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] Impacted teeth 600: Teeth that cannot erupt normally due to insufficient space or abnormal position (such as horizontally impacted wisdom teeth) often require extraction or surgical intervention.
[0033] Anchorage tooth 400: A tooth used in orthodontic treatment as a fixation or force support to transmit orthodontic forces and maintain dental stability.
[0034] Opposing tooth 500: The corresponding tooth that contacts each other during occlusion of the upper and lower jaws, jointly maintaining occlusal function and jaw position relationship (such as the maxillary first molar and the mandibular first molar). In this utility model, opposing tooth 500 specifically refers to the tooth corresponding to anchorage tooth 400.
[0035] Mesial surface: The adjacent surface close to the midline of the oral cavity (such as the midline between the incisors).
[0036] Distal surface: The adjacent surface that is far from the midline of the oral cavity.
[0037] Buccal surface: The outer surface of the posterior teeth near the cheek (the corresponding surface of the anterior teeth is called the labial surface).
[0038] Lingual surface: The inner surface of the tongue (also called the palatal surface of the maxillary teeth).
[0039] Occlusal surface: The chewing surface of the posterior teeth.
[0040] Incisional edge: The cutting edge of the anterior teeth.
[0041] Horizontal: This usually refers to the direction perpendicular to the long axis of the tooth, such as the mesiodistal direction (e.g., the line connecting the mesial and distal surfaces). In clinical practice, a transverse tooth fracture refers to a fracture perpendicular to the long axis of the tooth.
[0042] Vertical: refers to the direction along the long axis of the tooth, such as the buccal-lingual direction or the direction extending from the crown to the root. A longitudinal fracture refers to a crack parallel to the long axis.
[0043] The mesiodistal (lateral) direction is often used to describe problems with the contact or alignment of adjacent teeth.
[0044] The buccal-lingual direction (longitudinal) may involve the width of the teeth or the occlusal relationship.
[0045] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0046] This utility model provides an occlusal pad device for distally impacted teeth, such as... Figures 1 to 4 As shown, the device includes an occlusal pad 100 configured to be bonded to an anchorage tooth 400. The occlusal pad 100 includes a first region 110 and a second region 120. The first region 110 is configured to cover the lingual cusps, and the second region 120 is configured to cover the buccal cusps and contact the central fossa of the opposing tooth 500. The first region 110 and the second region 120 are further configured such that, when the occlusal pad 100 is bonded to the anchorage tooth 400, the top surface of the second region 120 is higher than the top surface of the first region 110. The bottom surface of the occlusal pad 100 also includes a third region 130 located in the middle of the occlusal pad 100, and the third region 130 is connected to at least one archwire fixation member 200.
[0047] Figure 1 This is a schematic diagram of the distal structure of the occlusal pad device for distally erect impacted teeth provided in an embodiment of the present invention, as shown below. Figure 1As shown, the second region 120, which covers the buccal cusp, contacts the central fossa of the opposing tooth 500. With the occlusal splint 100 bonded to the anchor tooth 400, the top surface of the second region 120 is higher than the top surface of the first region 110, which can elevate the buccal cusp and make early contact between the buccal cusp and the opposing tooth 500. This reduces the stress on the middle part of the occlusal splint 100. The archwire fixation member 200 is connected to the third region 130 of the occlusal splint 100. The third region 130 is located on the bottom surface of the occlusal splint 100 and in the middle part of the occlusal splint 100. Reducing the stress on the middle part of the occlusal splint 100 can avoid affecting the connection effect of the archwire fixation member 200 and prevent the archwire 300 from dislodging. This allows the archwire 300 to achieve a better bonding effect, avoid interference, and is not easy to fall off. It can ensure that the archwire 300 can guide the mesial impacted molar to be distally upright.
[0048] Figure 2 This is a bottom view of the occlusal pad device for distally impacted teeth provided in an embodiment of the present invention, as shown in the figure. Figure 2 As shown, the bottom surface of the mat 100 also includes a third region 130, which is located in the middle of the mat 100 and is connected to at least one bowwire fastener 200.
[0049] Figure 3 This is a top view schematic diagram of the occlusal pad device for distally impacted teeth provided in an embodiment of the present invention. Figure 3 In the image, the occlusal pad 100 is set to a semi-transparent state to show the positional relationship between the occlusal pad 100 and the anchorage tooth 400.
[0050] Figure 4 A schematic diagram of the buccal structure of the occlusal pad device for distally impacted teeth provided in this embodiment of the present invention, as shown below. Figure 4 As shown, one end of the archwire 300 is connected to the occlusal pad device for distally erect impacted teeth, and the other end of the archwire 300 is connected to the impacted tooth 600.
[0051] In some embodiments, such as Figure 1 As shown, with the occlusal pad 100 bonded to the anchor tooth 400, the third region 130 of the occlusal pad 100 is configured to form a gap with the occlusal surface of the anchor tooth 400 that can accommodate the archwire fixation member 200.
[0052] In some embodiments, such as Figure 1 and Figure 2 As shown, the third region 130 extends along the mesial-distal direction to both ends of the mat 100. That is, the third region 130 penetrates both ends of the mat 100 along the mesial-distal direction, so that a hollow area is formed in the middle of the bottom surface of the mat 100. This hollow area is used to accommodate the bow wire fixing member 200, so that the bow wire fixing member 200 can be placed into the third region 130.
[0053] In some embodiments, such as Figure 2 As shown, the third region 130 forms a funnel-shaped opening 131 at both ends of the pad 100. The funnel-shaped opening 131 makes it easier for doctors to operate and makes it easier to put the archwire fixation member 200 into the third region 130.
[0054] In some embodiments, such as Figure 1 and Figure 2 As shown, the third region 130 connects two bowwire fasteners 200. In other embodiments, more bowwire fasteners 200 may be provided as needed, such as three or four. Providing more than one bowwire fastener 200 makes it easier to achieve a better fixation effect on the bowwire 300.
[0055] In some embodiments, such as Figure 2 As shown, the two archwire retainers 200 are distributed along the mesiodistal direction and are as dispersed as possible. When the distal upright molar deforms excessively, the archwire will generate a large force. The dispersed distribution of the two archwire retainers can prevent them from falling off due to excessive force.
[0056] In some embodiments, such as Figure 2 As shown, the minimum width of the third region 130 along the buccal-lingual direction is not less than 4 mm. Figure 2 In the text, L represents the minimum width of the third region 130 along the buccal-tongue direction. Generally, the width of the archwire fixing member 200 is about 2 mm. When the minimum width of the third region 130 along the buccal-tongue direction is not less than 4 mm, it is easier to insert the archwire fixing member 200 into the third region 130 and connect it to the third region 130.
[0057] In some embodiments, the bow wire fastener 200 is bonded to the third region 130, which can increase the ease of replacing the bow wire 300.
[0058] In some embodiments, the first region 110 and the second region 120 of the occlusal pad 100 are configured to be bonded to the occlusal surface of the abutment tooth 400 by an adhesive resin. The adhesive resin has advantages such as high bonding strength, adaptability to bonding dissimilar materials, low shrinkage and dimensional stability, water resistance, good edge sealing and color matching, and significantly reduced risk of microleakage.
[0059] In some embodiments, the mat 100 is a self-curing plastic mat 100, which has the advantages of being easy to operate, curing quickly, being low in cost, and providing a temporary stable interlocking relationship.
[0060] In the above embodiments, the bow wire fixing member 200 may adopt a specific bow wire 300 fixing structure such as a double-wing tongue side buckle, and this application does not impose any restrictions.
[0061] In the above embodiments, the archwire 300 can be made of superelastic nickel-titanium archwire 300. However, other materials that can be used in dental archwire 300 are also applicable to this application, and this application does not limit them.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A ridge lap device for distovertically impacted teeth, characterized in that, The hybrid pad (100) is configured to be bonded to the anchorage tooth (400), and the hybrid pad (100) comprises a first area (110) configured to wrap the lingual cusp and a second area (120) configured to wrap the buccal cusp and contact the central fossa of the opposite tooth (500). The first area (110) and the second area (120) are also configured such that, in the state that the hybrid pad (100) is bonded to the anchorage tooth (400), the top surface of the second area (120) is higher than the top surface of the first area (110). The bottom surface of the hybrid pad (100) further comprises a third area (130) located in the middle of the hybrid pad (100), and the third area (130) is connected with at least one archwire fixing member (200).
2. The ridge lap device for distovertical impacted tooth according to claim 1, characterized in that, In the state that the hybrid pad (100) is bonded to the anchorage tooth (400), the third area (130) of the hybrid pad (100) is configured to form a gap with the occlusal surface of the anchorage tooth (400), which can accommodate the archwire fixing member (200).
3. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The third area (130) extends to both ends of the hybrid pad (100) in the mesial-distal direction.
4. The ridge lap device for distoangular impacted tooth according to claim 3, wherein, The third area (130) forms a trumpet-shaped opening (131) at both ends of the hybrid pad (100).
5. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The third area (130) is connected with at least two archwire fixing members (200).
6. The ridge lap device for distovertically impacted teeth according to claim 5, wherein, The at least two archwire fixing members (200) are distributed along the mesial-distal direction.
7. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The minimum width of the third area (130) in the buccal-lingual direction is not less than 4mm.
8. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The archwire fixing member (200) is bonded to the third area (130).
9. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The first area (110) and the second area (120) of the hybrid pad (100) are configured to be bonded to the occlusal surface of the anchorage tooth (400) by bonding resin.
10. The ridge lap device for distoangular impacted tooth according to claim 1, wherein, The hybrid pad (100) is a self-curing plastic hybrid pad (100).