Orthodontic device for converting chewing force into anterior tooth adduction force and use method of orthodontic device

Abstract

The invention discloses an orthodontic device for converting masticatory force into anterior tooth adduction force and a using method thereof.The orthodontic device comprises an upper jaw part used for converting masticatory force in the vertical direction into horizontal tension for adduction of anterior teeth, and the upper jaw part is installed on the cheek side of an upper jaw molar area of a patient; one end of the elastic traction accessory is mounted on the upper jaw part, and the other end of the elastic traction accessory is connected to the anterior tooth appliance; and the lower jaw part is fixed on the cheek side of the lower jaw molar area. The masticatory force is used as sustainable output force, the masticatory pressure in the vertical direction is converted into adduction anterior tooth force in the horizontal direction, and meanwhile, molar anchorage protection can be enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the medical field of orthodontic medical devices, in particular to a kind of orthodontic device for converting masticatory force into anterior tooth retraction force and its use method. BACKGROUND

[0002] In orthodontic treatment, anterior tooth retraction is a common treatment goal (such as solving protruding dentition, crowded dentition), but it is limited by the principle of action and reaction, and the counterforce often causes unintended movement of the anchorage tooth when pulling the target tooth. Currently, orthodontic clinics often use implant anchorage devices or increase the number of anchorage teeth and additional devices or cooperate with more stringent standard operations to achieve the purpose of protecting the stability of the anchorage tooth. However, implanting a dental implant requires invasive surgery, which can cause psychological panic and discomfort in patients. Increasing the anchorage unit requires more complex design and operation, which affects patient acceptance and the homogeneity of doctor's operation.

[0003] Therefore, based on the clinical need for efficient orthodontic retraction of anterior teeth while protecting posterior teeth, the present application designs an orthodontic device that uses masticatory muscle force to increase molar anchorage protection while converting it into anterior tooth retraction force. The purpose is to convert the muscle force from the body into physiological anchorage and retraction force, and to provide a stable and efficient force source by innovatively implementing a new idea of mechanical transmission and reasonably utilizing the muscle force. SUMMARY

[0004] In view of the technical problems in the background art, the present application provides an orthodontic device for converting masticatory force into anterior tooth retraction force, which can convert vertical masticatory pressure into horizontal retraction force of anterior teeth while enhancing molar anchorage protection. To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] An orthodontic device for converting masticatory force into anterior tooth retraction force, comprising

[0006] A maxillary component for converting vertical masticatory force into horizontal retraction force of anterior teeth, the maxillary component is installed on the buccal side of the patient's maxillary molar area;

[0007] A spring traction accessory, one end of which is installed on the maxillary component, and the other end is connected to the anterior tooth appliance;

[0008] A mandibular component fixed to the buccal side of the mandibular molar area.

[0009] The maxillary component includes a linear motion reverse conversion structure and a maxillary molar fixing band ring installed on the buccal side of the patient's maxillary molar area;

[0010] The linear motion reversal conversion structure includes an outer sleeve; the outer sleeve is vertically movable and mounted on the maxillary molar fixation band, the outer sleeve is sleeved outside the inner sleeve and the inner sleeve can move vertically relative to the outer sleeve; the outer wall of the outer sleeve is provided with an outer sleeve helical groove, and the outer wall of the inner sleeve is provided with an inner sleeve helical groove in the opposite direction to the outer sleeve helical groove; one end of the rectangular slider is located in the outer sleeve helical groove, and the other end is located in the inner sleeve helical groove;

[0011] A support rod is provided on one side of the upper end of the outer sleeve, and a fixed pulley is installed at the top of the support rod;

[0012] One end of the elastic traction accessory is installed on the upper end of the inner sleeve via a corresponding traction wire. The middle part of this traction wire passes around the fixed pulley. The other end of the elastic traction accessory is installed in the traction area of ​​the anterior teeth via a corresponding traction wire.

[0013] When the patient chews, the mandibular fixation block pushes the outer sleeve upward and the inner sleeve downward, pulling the corresponding traction wire to slide. Through the conversion of the fixed pulley, the vertical traction force is turned into a horizontal component force that can retract the anterior teeth.

[0014] This orthodontic device also includes a reset spring;

[0015] One end of the return spring is installed on the lower end face of the inner sleeve, and the other end is installed on the lower end face inside the outer sleeve.

[0016] This orthodontic device also includes two retainers;

[0017] The outer sleeve is provided with a vertical straight groove; the outer wall of the inner sleeve is provided with a vertical straight groove; two fixing bolts are respectively installed on the fixing ring at intervals along the vertical direction; the protruding end of one fixing bolt is located in the straight groove of the outer sleeve; the protruding end of the other fixing bolt is located in the straight groove of the inner sleeve.

[0018] The mandibular component includes a mandibular fixation block and a mandibular molar fixation band. The mandibular molar fixation band is installed on the mandibular molars, and the mandibular fixation block is installed on the side wall of the mandibular molar fixation band, directly below the outer sleeve. The outer sleeve extends an appropriate distance beyond the plane of the maxillary molars, and the mandibular fixation block extends an appropriate distance beyond the plane of the mandibular molars. During chewing movements, the mandibular fixation block pushes the outer sleeve upwards.

[0019] According to the method of using an orthodontic appliance that converts chewing force into anterior tooth retraction force, the following steps are included:

[0020] S1. The maxillary molar fixation band is installed on the maxillary molar. The linear motion reversal conversion structure is fixed to the maxillary molar fixation band by a fixation bolt. The mandibular molar fixation band is installed on the mandibular molar. The mandibular fixation block is fixed to the mandibular molar fixation band.

[0021] S2. Adjust the height of the support rod according to the height of the maxillary alveolar bone of different patients, without compressing the gums and mucosa;

[0022] S3. One traction wire is connected to the top of the inner tube, goes around the fixed pulley and is connected to one end of the traction assembly; the other traction wire is connected to the other end of the traction assembly and the other end is connected to the patient's anterior orthodontic appliance.

[0023] The beneficial effects of this invention are:

[0024] 1. This invention utilizes the patient's own bio-force, using chewing force as the power source for anterior tooth retraction, replacing part of the external force applied, reducing patient pain and discomfort, and improving compliance;

[0025] 2. Through two conversions using a “linear motion reverse conversion structure + fixed pulley”, the vertical chewing pressure is sequentially converted into “coaxial reverse contraction force” and “horizontal retraction force”, solving the problem that existing technologies cannot accurately convert chewing force into anterior tooth retraction force;

[0026] 3. High efficiency in force utilization: The reverse linear motion conversion and horizontal direction conversion only change the direction of the force, not the magnitude of the force. Although there is system friction in the structure, the chewing muscle force is a daily physiological behavior of patients and has a physiological force range. Moreover, the device can continuously generate power with the chewing cycle. Therefore, the bio-force is continuously and efficiently utilized, and there is no need for frequent periodic adjustments or replacements, which reduces the doctor's operational burden. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the outer sleeve structure in this invention;

[0029] Figure 3 This is a schematic diagram of the inner sleeve in this invention;

[0030] Figure 4 This is a schematic diagram of the linear motion reversal conversion structure when not engaged in the present invention;

[0031] Figure 5 This is a schematic diagram of the linear motion reversal conversion structure during engagement in this invention;

[0032] In the diagram, 111-outer sleeve, 112-inner sleeve, 113-outer sleeve spiral groove, 114-inner sleeve spiral groove, 115-outer sleeve linear groove, 116-inner sleeve linear groove, 117-rectangular slider, 118-reset spring, 121-support rod, 122-fixed pulley, 131-fixing bolt, 132-maxillary molar fixing band ring, 141-elastic traction accessory, 142-traction wire, 151-mandibular fixing block, 152-mandibular molar fixing band ring. Detailed Implementation

[0033] Combination Figures 1-5 An orthodontic device that converts chewing force into anterior tooth retraction force, including

[0034] The maxillary component is used to convert vertical chewing forces into horizontal pulling forces that retract the anterior teeth. This maxillary component is installed on the buccal side of the patient's maxillary molar region.

[0035] Elastic traction attachment 141, one end of which is mounted on the maxillary component and the other end is connected to the anterior orthodontic appliance;

[0036] The mandibular component is fixed to the buccal side of the mandibular molar region. The mandibular component includes a mandibular fixing block 151 and a mandibular molar fixing band 152. The mandibular molar fixing band 152 is installed on the mandibular molar, and the mandibular fixing block 151 is installed on the side wall of the mandibular molar fixing band 152 and directly below the outer sleeve 111.

[0037] The maxillary component includes a linear motion reversal mechanism and a maxillary molar fixation band 132 installed on the buccal side of the patient's maxillary molar region;

[0038] The linear motion reversal structure includes an outer sleeve 111; the outer sleeve 111 is vertically movable and mounted on the maxillary molar fixation band 132, the outer sleeve 111 is sleeved outside the inner sleeve 112 and the inner sleeve 112 can move vertically relative to the outer sleeve 111; for example Figure 2 As shown, the outer wall of the outer sleeve 111 is provided with an outer sleeve spiral groove 113, such as... Figure 3 As shown, the outer wall of the inner sleeve 112 is provided with an inner sleeve helical groove 114; one end of the rectangular slider 117 is located in the outer sleeve helical groove 113, and the other end is located in the inner sleeve helical groove 114; the helical directions of the outer sleeve helical groove 113 and the inner sleeve helical groove 114 are opposite, and the intersection of the two is always limited by the rectangular slider 117. When the outer sleeve 111 moves upward, the outer sleeve helical groove 113 drives the rectangular slider 117 to slide, and the sliding of the rectangular slider 117 drives the inner sleeve helical groove 114 to move, thereby causing the inner sleeve 112 to produce relative extension and contraction motion with respect to the outer sleeve 111 on a coaxial straight line.

[0039] A support rod 121 is provided on one side of the upper end of the outer sleeve 111, and a fixed pulley 122 is installed at the top of the support rod 121;

[0040] One end of the elastic traction attachment 141 is installed on the upper end of the inner sleeve 112 via the corresponding traction wire 142. The middle part of this traction wire passes around the fixed pulley 122. The other end of the elastic traction attachment 141 is installed in the traction anterior tooth area via the corresponding traction wire 142. The elastic traction attachment 141 can be selected from nickel-titanium springs, chain rings, or elastic wires.

[0041] When the patient chews, the mandibular fixation block 151 pushes the outer sleeve 111 upward and the inner sleeve 112 downward, pulling the corresponding traction wire to slide. Through the fixed pulley 122, the vertical traction force is converted into a horizontal component force that can retract the anterior teeth.

[0042] Although gravity can move the outer sleeve 111 downwards when chewing ceases, friction can sometimes hinder its downward movement. This orthodontic device also includes a reset spring 118; one end of the reset spring 118 is mounted on the lower end face of the inner sleeve 112, and the other end is mounted on the lower inner end face of the outer sleeve 111. When the outer sleeve 111 and inner sleeve 112 are subjected to relative compression due to chewing pressure, the reset spring 118 is compressed. When the pressure disappears, the reset spring 118 releases its stored energy and extends, causing the outer sleeve 111 and inner sleeve 112 to move in opposite directions relative to each other until reset. This completes the cycle of coaxial linear relative movement between the outer sleeve 111 and inner sleeve 112 in the vertical direction.

[0043] This orthodontic device also includes two fixation bolts 131;

[0044] The outer sleeve 111 has a vertically oriented linear groove 115; the outer wall of the inner sleeve 112 has a vertically oriented linear groove 116; two fixing bolts 131 are respectively installed vertically at intervals on the maxillary molar fixing band 132; the protruding end of one fixing bolt 131 is located in the linear groove 115 of the outer sleeve; the protruding end of the other fixing bolt 131 is located in the linear groove 116 of the inner sleeve. The two fixing bolts 131 overlap and limit the linear grooves 115 and 116 of the outer sleeve. When the rectangular slider 117, the spiral groove 113 of the outer sleeve, and the spiral groove 114 of the inner sleeve slide in conjunction, the outer sleeve 111 and the inner sleeve 112 can only move in a straight line and will not rotate.

[0045] All components of this device are made of biocompatible materials and have a polished surface to avoid irritating the oral mucosa.

[0046] This orthodontic appliance also includes an anchorage reinforcement structure, which is a transpalatal bar structure that connects laterally to the sleeve structure of the maxillary molars on both sides. The masticatory pressure is transmitted to the molars through the anchorage reinforcement structure, increasing their anchorage and preventing the molars from moving forward.

[0047] The method of using the orthodontic device described above, which converts chewing force into anterior tooth retraction force, includes the following steps:

[0048] S1. The maxillary molar fixation band 132 is installed on the maxillary molar. The linear motion reversal conversion structure is fixed to the maxillary molar fixation band 132 by the fixation bolt 131. The mandibular molar fixation band 152 is installed on the mandibular molar. The mandibular fixation block 151 is fixed to the mandibular molar fixation band 152.

[0049] S2. Adjust the height of the support rod 121 according to the height of the maxillary alveolar bone of different patients, without compressing the gums and mucosa;

[0050] S3. One traction wire 142 is connected to the top of the inner sleeve 112, and after passing around the fixed pulley 122, it is connected to one end of the elastic traction component 141; one end of the other traction wire 142 is connected to the other end of the elastic traction component, and the other end of the other traction wire 142 is connected to the patient's anterior orthodontic appliance or traction hook.

[0051] like Figures 1-5 As shown, the working principle and process of this invention are as follows:

[0052] When the patient chews, the upper and lower molars bite together. The mandibular fixation block 151 pushes the outer sleeve 111 upward, and the outer sleeve spiral groove 113 drives the rectangular slider 117 to slide. The inner sleeve spiral groove 114 is also driven at the same time. Since the spiral groove directions of the inner sleeve spiral groove 114 and the outer sleeve spiral groove 113 are opposite, the inner sleeve 112 and the outer sleeve 111 produce relatively opposite linear movements. The inner sleeve 112 moves downward, and the traction wire 142 fixed at the top of the inner sleeve 112 changes direction via the fixed pulley 122 fixed at the top of the outer sleeve 111. Through the elastic traction attachment 141, the anterior teeth are pulled backward and inward. Figure 5 In the middle section, the second traction wire is not horizontal, but as long as a horizontal component force is applied, it can drive the anterior teeth to retract.

[0053] After chewing ends, the upper and lower molars separate, the outer sleeve 111 loses its force, and the compressed return spring 118 rebounds and pushes away the inner sleeve 112 and the outer sleeve 111. The rectangular slider 117 slides again along the outer sleeve spiral groove 113 and the inner sleeve spiral groove 114, which are opposite to each other, so that the inner sleeve 112 and the outer sleeve 111 separate in a straight line to the initial position, waiting for the next chewing cycle.

Claims

1. An orthodontic device that converts chewing force into anterior tooth retraction force, characterized in that: include The maxillary component is used to convert vertical chewing forces into horizontal pulling forces that retract the anterior teeth. This maxillary component is installed on the buccal side of the patient's maxillary molar region. Elastic traction attachment, one end of which is installed on the maxillary component and the other end is connected to the anterior orthodontic appliance; Mandibular component, which is fixed to the buccal side of the mandibular molar region.

2. The orthodontic device according to claim 1, characterized in that: The maxillary component includes a linear motion reversal mechanism and a maxillary molar fixation band installed on the buccal side of the patient's maxillary molar region; The linear motion reversal conversion structure includes an outer sleeve; the outer sleeve is vertically movable and mounted on the maxillary molar fixation band, the outer sleeve is sleeved outside the inner sleeve and the inner sleeve can move vertically relative to the outer sleeve; the outer wall of the outer sleeve is provided with an outer sleeve helical groove, and the outer wall of the inner sleeve is provided with an inner sleeve helical groove in the opposite direction to the outer sleeve helical groove; one end of the rectangular slider is located in the outer sleeve helical groove, and the other end is located in the inner sleeve helical groove; A support rod is provided on one side of the upper end of the outer sleeve, and a fixed pulley is installed at the top of the support rod; One end of the elastic traction accessory is installed on the upper end of the inner sleeve via a corresponding traction wire. The middle part of this traction wire passes around the fixed pulley. The other end of the elastic traction accessory is installed in the traction area of ​​the anterior teeth via a corresponding traction wire. When the patient chews, the mandibular fixation block pushes the outer sleeve upward and the inner sleeve downward, pulling the corresponding traction wire to slide. Through the conversion of the fixed pulley, the vertical traction force is turned into a horizontal component force that can retract the anterior teeth.

3. The orthodontic device according to claim 2, characterized in that: It also includes a return spring; One end of the return spring is installed on the lower end face of the inner sleeve, and the other end is installed on the lower end face inside the outer sleeve.

4. The orthodontic device according to claim 2, characterized in that: It also includes two fixing bolts; The outer sleeve is provided with a vertical straight groove; the outer wall of the inner sleeve is provided with a vertical straight groove; two fixing bolts are respectively installed on the fixing ring at intervals along the vertical direction; the protruding end of one fixing bolt is located in the straight groove of the outer sleeve; the protruding end of the other fixing bolt is located in the straight groove of the inner sleeve.

5. The orthodontic device according to claim 2, characterized in that: The mandibular component includes a mandibular fixation block and a mandibular molar fixation band. The mandibular molar fixation band is installed on the mandibular molars, and the mandibular fixation block is installed on the side wall of the mandibular molar fixation band, directly below the outer sleeve. The outer sleeve extends an appropriate distance beyond the plane of the maxillary molars, and the mandibular fixation block extends an appropriate distance beyond the plane of the mandibular molars. During chewing movements, the mandibular fixation block pushes the outer sleeve upwards.

6. A method of using an orthodontic device according to claims 1-5 that converts chewing force into anterior tooth retraction force, characterized in that, Includes the following steps: S1. The maxillary molar fixation band is installed on the maxillary molar. The linear motion reversal conversion structure is fixed to the maxillary molar fixation band by a fixation bolt. The mandibular molar fixation band is installed on the mandibular molar. The mandibular fixation block is fixed to the mandibular molar fixation band. S2. Adjust the height of the support rod according to the height of the maxillary alveolar bone of different patients, without compressing the gums and mucosa; S3. One traction wire is connected to the top of the inner tube, goes around the fixed pulley and is connected to one end of the traction assembly; the other traction wire is connected to the other end of the traction assembly and the other end is connected to the patient's anterior orthodontic appliance.

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