A mandibular anterior guide to reduce lower anterior teeth labial tipping and method of use

Abstract

This invention relates to a mandibular premolar guiding device for reducing labial inclination of the lower anterior teeth. The device includes an upper molar band, a lower molar band, a premolar guide, a push plate, and an implant. The upper and lower molar bands are fixed to the upper and lower molars, respectively. The premolar guide is located on the buccal side of the upper molar band, and the push plate is fixed on the buccal side of the lower molar band. The front end of the premolar guide bends downward to form a pusher portion. During occlusion, the pusher portion pushes against the push plate to achieve mandibular premolar guidance. The buccal side of the lower molar band also has a buccal tube. The lower incisor has a bracket. The buccal tube and the bracket are connected by a lower archwire. The lower archwire has a lower traction hook corresponding to the lower incisor. The implant is located between the lower molar and the lower premolar. The implant and the lower traction hook are connected by a traction member. This device can simultaneously achieve mandibular premolar guidance and reduce labial inclination of the lower anterior teeth.

Description

Technical Field

[0001] This invention relates to a mandibular pre-guide device for reducing labial inclination of the lower anterior teeth and its method of use, belonging to the field of orthodontic technology. Background Technology

[0002] Skeletal Class II mandibular retrusion is a common malocclusion in clinical practice. For early orthodontic treatment of this malocclusion, the most commonly used devices in clinical practice include removable and fixed pre-leading devices. However, these devices and methods usually cannot solve the dental effect problem of labial inclination of the lower anterior teeth. Therefore, the clinical treatment effect is not good for skeletal mandibular retrusion cases with labial inclination compensation of the lower teeth, small overbite of the anterior teeth, and insufficient pre-leading space of the incisors. At the same time, most traditional orthodontic devices act on the lower dentition, which will further aggravate the dental compensation effect of the lower teeth, thereby weakening the skeletal effect of guiding the mandible forward.

[0003] For skeletal Class II orthodontic patients with mandibular retrusion, the treatment typically involves extraction to guide the mandible forward and backward into the fixed orthodontic stage. Depending on the mandibular anteriorization and labial inclination of the lower incisors, it is generally necessary to extract four first premolars or the maxillary first premolar and mandibular second premolar. However, this method requires the extraction of four teeth, and the mandibular guidance is divided into two stages, resulting in a long treatment course. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a device that simultaneously achieves mandibular precoordination and reduces labial inclination of the mandibular anterior teeth.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows: A mandibular premolar guiding device for reducing labial inclination of the lower anterior teeth, based on a case of extraction of two mandibular premolars, comprises an upper molar band, a lower molar band, a premolar guide, a push plate, and an implant. The upper and lower molar bands are fixed to the upper and lower molars, respectively. The premolar guide is positioned on the buccal side of the upper molar band, and the push plate is fixed on the buccal side of the lower molar band. The front end of the premolar guide bends downward to form a pushing part. During occlusion, the pushing part pushes against the push plate to achieve mandibular premolar guidance. The lower molar band also has a buccal tube on its buccal side, and the lower incisor has a bracket. The buccal tube and the bracket are connected by a lower archwire. The lower archwire has a lower traction hook corresponding to the lower incisor. The implant is placed between the lower molar and the lower premolar. The implant and the lower traction hook are connected by a traction device.

[0006] A further design of the above technical solution is as follows: the lower molar belt ring is provided with a connecting rod extending forward and downward, the connecting rod is provided with a fixing hole, and the traction hook is set in the fixing hole.

[0007] Furthermore: the upper molar band has a double-tube buccal tube on the buccal side, and the upper end of the double-tube buccal tube has an upwardly extending hook. The guide is connected to the double-tube buccal tube, and the upper end of the guide has an upwardly extending upper traction hook. The upper traction hook is connected to the hook on the double-tube buccal tube through a traction member.

[0008] Furthermore: the front end face of the pusher portion forms a plane that mates with the pusher plate; after the teeth bite, the front end face of the guide member fits against the pusher plate. The mating surface of the front end face of the pusher portion is perpendicular to the direction of the dental arch.

[0009] Furthermore, the lower end of the pushing part is provided with a rearwardly extending guide part, which is in the shape of a downwardly convex arc.

[0010] Furthermore: the upper anterior teeth are provided with brackets, and the double buccal tubes and the brackets on the upper anterior teeth are connected by an upper archwire.

[0011] Furthermore, the occlusal surfaces of the upper and lower molars are provided with occlusal plates, which are used to assist in mandibular protraction.

[0012] Furthermore: the traction component is a rubber rope or rubber chain.

[0013] The present invention also provides a method of using the aforementioned mandibular premolar reduction mandibular anterior tipping device, the method of using the premolar reduction mandibular anterior tipping device being based on a case of extraction of two mandibular premolars; comprising: Step 1: Fix the upper molar band ring with double buccal tubes and the lower molar band ring with buccal tubes, push plate and connecting rod to the upper molar and lower molar respectively. Step 2: Install brackets on the upper anterior teeth and lower incisors respectively, and connect the brackets of the upper anterior teeth to the double buccal tubes on the upper molar band with the upper archwire, and connect the brackets of the lower incisors to the buccal tubes on the lower molar band with the lower archwire. Step 3: Connect the lead piece to the double-tube cheek tube, and use the traction piece to connect the traction hook to the hook body on the double-tube cheek tube; Step 4: Place an implant between the lower molar and the lower premolar, with the implant passing through the connecting rod fixation hole on the lower molar band to provide anchorage; Step 5: Use the traction device to connect the implant post to the lower traction hook on the lower archwire to retract the lower incisor. Compared with the prior art, the present invention has the following advantages: This invention is designed for skeletal Class II orthodontic patients with mandibular retrusion, insufficient overjet of the anterior teeth for mandibular guidance (especially suitable for high-angle patients with mandibular incisor labial inclination). It integrates mandibular advancement and later fixed orthodontic retraction of the mandibular anterior teeth into a single design. It utilizes the patient's natural occlusion to generate a guiding force between the mandibular guide and the push plate, and uses implants and traction devices to provide inward traction force for the mandibular incisors. Therefore, it can simultaneously achieve mandibular advancement and reduce mandibular anterior tooth labial inclination.

[0014] The device and method of this invention only require the extraction of the two premolars in the lower jaw to retract the lower incisors. This not only eliminates the compensatory labial inclination of the lower incisors but also provides mandibular anterior guidance space, making it suitable for orthodontic patients in the peak period of adolescent growth and development.

[0015] This invention employs an implant-supported anchorage design for mandibular anterior tooth retraction; simultaneously, the mandibular guidance device is connected to the bony anchorage of the mandibular implant, which maximizes mandibular guidance and improves the mandibular guidance effect. Attached Figure Description

[0016] Figure 1 A schematic diagram of teeth in a case of mandibular retrusion; Figure 2 This is a schematic diagram of the anterior tooth retraction portion of the mandibular pre-guide device of the present invention; Figure 3 A schematic diagram of the teeth after mandibular pre-guided mandibular ... Figure 4 for Figure 3 Top view of the middle and lower dental arch; Figure 5 This is a diagram illustrating the retraction of the lower anterior teeth into the posterior teeth. In the diagram: 1-Upper molar band, 11-Double buccal tube, 12-Hook, 2-Lower molar band, 21-Buccal tube, 22-Connecting rod, 3-Leading element, 31-Pushing part, 32-Guide part, 33-Upper traction hook, 4-Push plate, 5-Implant screw, 6-Traction element, 7-Bracket, 8-Archwire, 81-Lower traction hook. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] In the description of the embodiments of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing the present invention 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 the invention. The accompanying drawings are schematic diagrams or conceptual diagrams, and the relationships between the thickness and width of each part, as well as the proportional relationships between each part, etc., are not entirely consistent with their actual values. Example 1

[0019] The mandibular pre-guide device of this embodiment, which reduces the labial inclination of the lower anterior teeth, is used to correct skeletal Class II mandibular retrusion in patients in the late mixed dentition stage or early permanent dentition stage, i.e., the peak period of adolescent growth and development. It is especially suitable for patients with high-angle skeletal mandibular retrusion.

[0020] like Figure 1 The image shows the dental condition of a skeletal Class II mandibular retrusion case. Figure 2 and Figure 3 As shown, two premolars in the lower jaw need to be extracted before orthodontic treatment to retract the lower incisors, remove the labial inclination compensation of the lower incisors, and provide space for pre-orthodontic treatment.

[0021] The mandibular premolar guide device of this embodiment includes an upper molar band 1 and a lower molar band 2, which are respectively fixed to the upper molar and the lower molar. The upper molar band 1 is provided with a double-tube buccal tube 11. The buccal side of the double-tube buccal tube 11 is connected to a guide member 3. The distal end of the guide member 3 is provided with an insertion part, which can be inserted into one tube of the double-tube buccal tube 11. A hook body 12 extending towards the gingiva is provided above the double-tube buccal tube 11. An upper traction hook 33 extending towards the gingiva is provided above the guide member 3. The upper traction hook 33 and the hook body 12 are connected by a traction member 6 to restrict the guide member 3 to the double-tube buccal tube 11 and prevent the guide member 3 from detaching from the double-tube buccal tube 11.

[0022] A push plate 4 is fixed to the buccal side of the lower molar band 2. The push plate 4 is positioned perpendicular to the direction of the dental arch. The front end of the guide member 3 is bent downward and extends to form a push part 31. The front end face of the push part 31 forms a plane that mates with the push plate 4. The lower end of the push part 31 has a rearwardly extending guide part 32, which is in the shape of a downwardly convex arc. During occlusion, the guide part 32 slides over the push plate 4, causing the front end face of the push part 31 to fit against the push plate 4 and generate a pushing force, pushing the mandible forward, i.e., towards the mesial direction. Figure 3 The image shows the position of the teeth after mandibular pre-orthodontic treatment. The guide part 32 prevents the push part 31 from being misaligned with the push plate 4, ensuring that the pre-orthodontic member 3 is always located on the distal side of the push plate 4.

[0023] In this structure, the surface on which the thrust acts, namely the contact surface between the front end of the pusher and the push plate, is perpendicular to the direction of the tooth row, thereby ensuring that the direction of the thrust is stable and forward.

[0024] In this embodiment, brackets 7 are provided on the lower premolars and lower incisors, and the lower molar band 2 is also provided with a buccal tube 21. The brackets 7 of the lower dentition are connected to the buccal tube 21 by archwire 8, such as... Figure 4 As shown.

[0025] A connecting rod 22 extending forward and downward is fixed to the lower molar band 2, with the end of the connecting rod 22 positioned between the lower molar and the lower premolar. The end of the connecting rod 22 has a fixing hole through which the implant 5 passes and is implanted into the mandible to form bony anchorage. The archwire 8 of the lower dentition has a lower traction hook 81 corresponding to the lower incisor. A traction element 6 connects the lower traction hook 81 and the implant 5, thereby generating traction force to retract the lower incisor, reducing the labial inclination of the lower anterior teeth. After retraction, the position of the teeth is as follows: Figure 5 As shown; implant 5 can enhance the anchorage design for mandibular anterior tooth retraction, and at the same time connect the mandibular pre-guide device to the skeletal anchorage of the implant in the mandible, so as to maximize the mandibular pre-guide.

[0026] In this embodiment, brackets 7 are also provided on the upper premolars and upper incisors, and another archwire 8 is used to connect the brackets 7 of the lower teeth to the double-tube buccal tube 11.

[0027] In this embodiment, the traction component 6 is a rubber rope or rubber chain, etc. Example 2

[0028] This embodiment is a further design based on the technology of embodiment one. An occlusal plate is also provided on the occlusal surfaces of the upper and lower molars. The occlusal plate acquires and sets the occlusal record at the position of mandibular protrusion. Therefore, when the patient bites, the occlusal plate can assist in mandibular protrusion. Example 3

[0029] This embodiment provides a method for using the mandibular premotor device for reducing labial inclination of the lower anterior teeth as described in Embodiment 1, specifically including the following steps: The two lower premolars must be extracted before using this preamble device; Step 1: Fix the upper molar belt ring and the lower molar belt ring, which is equipped with a push plate and connecting rod, onto the upper and lower molars respectively; Step 2: Install brackets on the upper anterior teeth and lower incisors respectively, and connect the brackets of the upper anterior teeth to the double buccal tubes on the upper molar band with the upper archwire, and connect the brackets of the lower incisors to the buccal tubes on the lower molar band with the lower archwire. Step 3: Connect the lead piece to the double-tube cheek tube, and use the traction piece to connect the traction hook to the hook body on the double-tube cheek tube; Step 4: Place an implant between the lower molar and the lower premolar, with the implant passing through the connecting rod fixation hole on the lower molar band to provide anchorage; Step 5: Use the traction device to connect the implant post to the lower traction hook on the lower archwire to retract the lower incisor.

[0030] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A mandibular anterior guide to reduce lower anterior teeth labial inclination, characterized in that: The preamble device is based on a case of extraction of two mandibular premolars. The preamble device includes an upper molar band, a lower molar band, a preamble, a push plate, and an implant. The upper and lower molar bands are fixed to the upper and lower molars, respectively. The preamble is located on the buccal side of the upper molar band, and the push plate is fixed on the buccal side of the lower molar band. The front end of the preamble bends downward to form a pusher. During occlusion, the pusher pushes against the push plate to achieve mandibular preamble. The lower molar band also has a buccal tube on its buccal side, and the lower incisor has a bracket. The buccal tube and the bracket are connected by a lower archwire. The lower archwire has a lower traction hook corresponding to the lower incisor. The implant is placed between the lower molar and the lower premolar. The implant and the lower traction hook are connected by a traction device.

2. The mandibular anterior guide to reduce lower incisor labial tipping of claim 1, wherein: The lower molar belt ring is provided with a connecting rod extending forward and downward, and the connecting rod is provided with a fixing hole, and the traction hook is set in the fixing hole.

3. The mandibular pre-guide device for reducing labial inclination of the lower anterior teeth according to claim 2, characterized in that: The upper molar band has a double-tube buccal tube on its buccal side, and the upper end of the double-tube buccal tube has an upwardly extending hook. The guide is connected to the double-tube buccal tube, and the upper end of the guide has an upwardly extending upper traction hook. The upper traction hook is connected to the hook on the double-tube buccal tube through a traction member.

4. The mandibular anterior guide to reduce lower incisor labial tipping of Claim 3, wherein: The front end face of the pusher part forms a plane that cooperates with the pusher plate. After the teeth bite, the front end face of the guide part fits against the pusher plate.

5. The mandibular anterior guide for reducing the labial inclination of the lower anterior teeth of claim 4, wherein: The front surface of the pusher part and the contact surface of the pusher plate are perpendicular to the direction of the tooth row.

6. The mandibular anterior guide to reduce lower incisor labial tipping of Claim 5, wherein: The lower end of the pushing part is provided with a rearwardly extending guide part, which is in the shape of a downwardly convex arc.

7. The mandibular pre-guide device for reducing labial inclination of the lower anterior teeth according to claim 6, characterized in that: The upper anterior teeth are provided with brackets, and the double buccal tubes and the brackets on the upper anterior teeth are connected by an upper archwire.

8. The mandibular pre-guide device for reducing labial inclination of the lower anterior teeth according to claim 7, characterized in that: The occlusal surfaces of the upper and lower molars are provided with occlusal plates, which are used to assist in mandibular protraction.

9. The mandibular pre-guide device for reducing labial inclination of the lower anterior teeth according to any one of claims 1 to 8, characterized in that: The traction component is a rubber rope or rubber chain.

10. A method of using the mandibular premotor device for reducing labial inclination of the lower anterior teeth as described in claim 7, characterized in that, The method of using this preamble device is based on a case involving the extraction of two mandibular premolars; including: The upper molar band ring with a double buccal tube and the lower molar band ring with a buccal tube, push plate and connecting rod are fixed to the upper molar and lower molar respectively. Brackets are placed on the upper anterior teeth and lower incisors respectively, and the brackets of the upper anterior teeth are connected to the double buccal tubes on the upper molar bands with an upper archwire, and the brackets of the lower incisors are connected to the buccal tubes on the lower molar bands with a lower archwire. Connect the lead piece to the double-tube cheek tube, and use the traction piece to connect the traction hook to the hook body on the double-tube cheek tube; An implant is placed between the lower molar and the lower premolar, and the implant passes through the connecting rod fixation hole on the lower molar band to provide anchorage; The lower incisor is retracted by using a traction device to connect the implant post to the lower traction hook on the lower archwire.

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