CN108464869A - Cast type backteeth double inclined plane guide plate appliance - Google Patents

Abstract

The present invention relates to providing a casting-type posterior double-slope guide plate appliance, which includes a maxillary inclined surface that is matched with the maxillary posterior teeth and that is thick in the front and thin in the rear and slopes forward and downward, a maxillary clasp that fixes the inclined surface of the upper jaw on the posterior maxillary teeth, The maxillary connecting body that connects the maxillary slopes on both sides, the mandibular slope that matches the mandibular posterior teeth and whose front thickness matches the maxillary slope, the mandibular snap ring that fixes the mandibular slope to the mandibular posterior teeth, and connects the mandibular slopes on both sides The mandibular connecting body, the upper jaw bevel, the upper jaw snap ring and the upper jaw connecting body are integrally cast from alloy, the mandibular bevel, the mandibular snap ring and the mandibular connecting body are all cast from alloy, and both the upper jaw bevel and the mandibular bevel can be used during chewing . The appliance has a simple structure, hygienic and comfortable treatment, and can perform effective functional correction for Class III skeletal malocclusions in the growth and development period, mainly with mandibular overdevelopment.

Description

Cast Posterior Double Bevel Guide Plate Appliance

technical field

The invention belongs to the field of orthodontic treatment and correction, and in particular relates to a casting-type posterior double-slope guide plate appliance.

Background technique

The incidence of Angle Class III malocclusion in Asia is 9-19% ^[1] [Uslu, O. and MOAkcam, Long-term follow-up of patients with a skeletal Angle Class III relationship treated with chin caps. World J Orthod, 2009.10 (4): p.317-22], 1~5% in Caucasians ^[2] [Danaie, SMand P.Salehi, Cephalometric evaluation of class-III patients with chin capand tongue guard. J Indian Soc Pedod Prev Dent , 2005.23(2): p.63-6]. Because Angle's class III malocclusion is poor and concave, the patient's desire for correction is very strong.

Angle's class III malocclusion is mainly a sagittal misalignment of the maxilla and mandible, and its main features are underdevelopment of the maxilla and/or a posterior position of the maxilla, or hyperdevelopment of the mandible and/or anterior position of the mandible ^{[3 ]} [Arat, ZM, MOAkcam, and H. Gokalp, Long-term effects of chin-cap therapy on the temporomandibular joints. Eur J Orthod, 2003.25(5): p.471-5]. Angle's class III malocclusions with craniofacial disorders are difficult to treat and tend to recur.

Early treatment of class III malocclusions is very important. During the growth and development period, the method of forward traction (or forward traction after maxillary expansion) can receive obvious clinical results for skeletal class III malocclusions with underdeveloped maxilla. Class III malocclusions with mandibular hyperplasia are treated with cap-chin pockets ^[4] [Altug, Z., D. Erdem, and M. Rubenduz, [Investigation of the effect of functional treatment in skeletal Class III cases on the profile facial aesthetics] .Turk Ortodonti Derg, 1990.3(1): p.39-44], has a certain curative effect but is still controversial ^[5] [Liu Ping (review), the influence of the chin pocket on the temporomandibular joint. Orthodontics, 2006.13 : p.191-193].

At present, the "orthopedic force" devices for the treatment of Angle's Class III skeletal malocclusion include head cap-chin pocket, maxillary protraction device, double-block magnetic orthosis, etc., but there are very few "functional force" orthotics. Only Frankel III (FRIII) ^[6] [Miethke, RR, S.Lindenau, and K.Dietrich, The effect of Frankel's functionregulator type III on the apical base. Eur J Orthod, 2003.25(3): p. 311-8]. FR III is mainly to relieve the pressure of the labial and buccal muscles that hinder the growth of the maxilla, promote the growth of the maxilla through the stretching of the periosteum, and use the pressure of the lower lip to force the mandible to retreat. Therefore, FR III is mainly effective for Angle’s class III skeletal and functional malocclusions with underdeveloped maxilla in growing children.

It can be seen from the above that there is still no alternative and effective functional appliance for Class III skeletal malocclusions that are mainly in the growth and development period and the jaw is overdeveloped. Therefore, it is urgent to design a new "functional force" appliance that can not only inhibit the growth of the mandible, but also allow the mandible to move freely in three dimensions during chewing.

Contents of the invention

The object of the present invention is to provide a cast type posterior double-slope guide plate appliance, which has a simple structure, hygienic and comfortable treatment, and can effectively treat Class III skeletal malocclusions in the growth and development period, mainly mandibular hyperplasia. functional correction.

The technical scheme adopted in the present invention is:

A casting-type posterior double-slope guide plate appliance, including a maxillary slope that fits with the maxillary posterior teeth and is thick in the front and thin in the rear and slopes forward and downward, an upper jaw snap ring that fixes the upper jaw slope on the maxillary posterior teeth, The maxillary connector connected by the inclined plane, the mandibular inclined plane matched with the mandibular posterior teeth and the front thinner and the rear thickness matched with the upper jaw inclined plane, the mandibular clasp to fix the mandibular inclined plane on the mandibular posterior teeth, and the mandibular connecting body connecting the mandibular inclined planes on both sides , The upper jaw bevel, the upper jaw snap ring and the upper jaw connecting body are integrally cast from alloy, the lower jaw bevel, the lower jaw snap ring and the lower jaw connecting body are integrally cast from alloy, both the upper jaw bevel and the lower jaw bevel can be used during chewing.

Furthermore, the length of the maxillary slope is from the mesial surface of the maxillary first premolar to the distal surface of the maxillary last molar, and the length of the mandibular slope is from the distal surface of the mandibular last molar to the mandibular first molar. Between the bicuspids and mandibular canines.

Further, the length of the maxillary slope and the mandibular slope is 25-35mm.

Further, the width of the maxillary slope and the mandibular slope can cover the occlusal surface of the posterior teeth.

Further, the width of the maxillary slope and the mandibular slope is 6-12mm.

Further, the thinnest part of the maxillary bevel and the mandibular bevel is 0.5mm, and the total thickness of the maxillary bevel and the mandibular bevel is subject to opening the upper and lower incisors by 1mm.

Further, the thickest part of the maxillary slope and the mandibular slope is 3-6mm.

Further, the maxillary clasp is a double-arm clasp that protrudes from the maxillary slope and covers the buccal and lingual sides of the maxillary posterior teeth crown, and the mandibular clasp is a double-arm clasp that protrudes from the mandibular slope and covers the buccal side of the mandibular posterior crown and double arm snap rings on the lingual side.

Further, the maxillary snap ring is mounted on the maxillary first bicuspids and the maxillary first molars, and the mandibular snap ring is mounted on the mandibular first bicuspids and the mandibular first molars.

Further, the maxillary connector and the mandibular connector are rods with a width of 3 mm and a thickness of 0.5-1 mm. The maxillary connector is located on the upper jaw and is 1 mm close to the upper anterior gingival margin, and the mandibular connector is located on the lingual side of the lower anterior teeth and 1 mm away from the gingival margin.

The beneficial effects of the present invention are:

During chewing, in the posterior teeth area, the masticatory force is decomposed by the mandibular slope, and the horizontal component guides the mandible backward. This component acts on the temporomandibular joint through the mandibular elevating branch to complete the reconstruction of the joint. The vertical component can depress the lower molars , which is beneficial to the improvement of the side profile of patients with skeletal class III malocclusion and long lower 1/3 of the face; similarly, the masticatory force is decomposed through the maxillary slope, and the horizontal component acts on the upper alveolar bone through the upper posterior teeth, guiding The maxilla moves forward. Among them, the maxillary clasp and the mandibular clasp provide the retaining force for the maxillary slope and the mandibular slope respectively, and the maxillary connector and the mandibular connector make the two sides related to anchorage and improve safety. Therefore, the effect of the casting type posterior double-slope guide plate appliance on the posterior region is beneficial to the correction of Class III skeletal malocclusion.

During chewing, in the anterior teeth area, the mandible has a downward slope on the lingual side to push the rear teeth backward, so the pressure on the lower anterior teeth decreases and tends to move or incline toward the lingual direction; on the contrary, the upper anterior teeth move toward the labial direction due to the labial force or tilt. Therefore, the effect of the casting-type posterior double-slope guide plate appliance on the anterior region is beneficial to the correction of skeletal or dental Class III malocclusions.

When chewing, when the maxillary slope meets the mandibular slope, the generated force and reaction force actively act on the alveolar bone, jaw bone, and temporomandibular joint through the dentition, so as to affect the growth rate and growth direction of the upper and lower jaws and correct the upper and lower jaws. The effect of the forward and backward positional relationship.

It can be known from the above that the present invention has simple structure, hygienic and comfortable treatment, and can effectively correct the function of Class III skeletal malocclusions in the growth and development period mainly with mandibular overdevelopment.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a side view of the embodiment of the present invention after installation.

Fig. 3 is a functional diagram of the embodiment of the present invention.

In the figure: 1-maxillary bevel; 2-maxillary clasp; 3-maxillary connector; 4-mandibular bevel; 5-mandibular clasp; 6-mandibular connector.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 to 3, a casting-type posterior double-slope guide plate appliance includes a maxillary slope 1 that fits with the maxillary posterior teeth and is thick at the front and thin at the back and slopes forward and downward, and fixes the slope 1 on the back of the maxilla. The maxillary clasp 2 on the tooth, the maxillary connector 3 connecting the maxillary slopes 1 on both sides, the mandibular slope 4 that matches the mandibular posterior teeth and whose front thickness matches the maxillary slope 1, and fixes the mandibular slope 4 behind the mandible The mandibular clasp 5 on the tooth, the mandibular connecting body 6 connecting the mandibular bevels 4 on both sides, the maxillary bevel 1, the maxillary clasp 2 and the maxillary connecting body 3 are integrally cast from alloy, the mandibular bevel 4, the mandibular clasp 5 and the The mandibular connector 6 is integrally cast from an alloy, and both the maxillary bevel 1 and the mandibular bevel 4 can be used during chewing (hardness of the alloy meets the requirements for use).

As shown in Figure 3, during chewing, in the posterior teeth area, the masticatory force is decomposed by the mandibular slope 4, and the horizontal force guides the mandible backward. The lateral force can depress the lower molars, which is beneficial to the improvement of the lateral profile of patients with skeletal class III malocclusion and long lower 1/3 of the face; similarly, the masticatory force is decomposed through the maxillary slope 1, and the horizontal component is transmitted through the upper posterior teeth Acts on the upper alveolar bone to guide the forward movement of the maxilla. Among them, the upper jaw clasp 2 and the mandibular clasp 5 respectively provide retaining force for the maxillary slope 1 and the mandibular slope 4, and the upper jaw connector 3 and the mandibular connector 6 make the relative anchorage of both sides improve safety. Therefore, the effect of the casting type posterior double-slope guide plate appliance on the posterior region is beneficial to the correction of Class III skeletal malocclusion.

As shown in Figure 3, during chewing, in the anterior teeth area, the mandible has a downward slope on the lingual side that pushes the rear teeth backward, so the pressure on the lower anterior teeth decreases and they tend to move or incline toward the lingual direction; on the contrary, the upper anterior teeth are affected by the labial direction Move or tilt toward the lip with force. Therefore, the effect of the casting-type posterior double-slope guide plate appliance on the anterior region is beneficial to the correction of skeletal or dental Class III malocclusions.

As shown in Figure 3, when chewing, when the maxillary slope 1 meets the mandibular slope 4, the generated force and reaction force actively act on the alveolar bone, jaw bone, and temporomandibular joint through the dentition to affect the growth rate of the upper and lower jaws. and growth direction, and correct the positional relationship between the upper and lower jaws.

It can be known from the above that the present invention has simple structure, hygienic and comfortable treatment, and can effectively correct the function of Class III skeletal malocclusions in the growth and development period mainly with mandibular overdevelopment.

In the present embodiment, as shown in Figure 2, the length of the maxillary slope 1 is from the mesial surface of the maxillary first bicuspid to the distal surface of the maxillary last molar (the length range of the maxillary slope 1 is generally 25- 35mm), the length of the mandibular slope 4 is from the distal surface of the mandibular last molar down to between the mandibular first bicuspid and the mandibular canine (the length of the mandibular slope 4 is generally 25-35mm).

In this embodiment, the width of the maxillary bevel 1 and the mandibular bevel 4 can cover the occlusal surface of the posterior teeth (the width range of the maxillary bevel 1 and the mandibular bevel 4 is generally 6-12mm).

In this embodiment, the thinnest part of the maxillary bevel 1 and the mandibular bevel 4 is 0.5 mm, and the total thickness of the maxillary bevel and the mandibular bevel is based on the fact that the upper and lower incisors can be opened by 1 mm. (The range of the thickest part of the maxillary bevel 1 and the mandibular bevel 4 is generally 3-6mm).

In this embodiment, as shown in Figure 2, the maxillary clasp 2 is a double-arm clasp that extends from the maxillary slope 1 and covers the buccal and lingual sides of the maxillary posterior teeth. The maxillary clasp 2 is installed on the upper jaw. On a pair of bicuspids and maxillary first molars (it can also be installed elsewhere, preferably here, which is conducive to improving the overall retention ability), the mandibular clasp 5 is a protruding mandibular posterior teeth from the mandibular slope 4 The double-arm snap rings on the buccal and lingual sides of the crown, and the mandibular snap ring 5 are installed on the mandibular first bicuspids and mandibular first molars (it can also be installed elsewhere, preferably here, which is beneficial to improve the overall retention capacity ). Other forms of clasps can also be used, and here the double-arm clasp is preferred because of its strong retention capacity.

In this embodiment, the maxillary connecting body 3 and the mandibular connecting body 6 are rods with a width of 3 mm and a thickness of 0.5-1 mm. The lingual side is 1mm from the gingival margin.

During the actual treatment, the orthodontist first checks and diagnoses the case, and the patient who is diagnosed as a skeletal Class III malocclusion (mandibular hyperplasia) in the growth and development stage chooses the casting type posterior tooth double-slope guide plate appliance provided by the present invention for treatment. treat. The production and clinical application process of the casting type posterior double-slope guide plate appliance is as follows:

S1. Conventional modulo taking. Choose a tray of appropriate size, mix the impression material according to the manufacturer's requirements, then make the impression, and fill it with artificial stone.

S2. Jaw position recording. Under normal circumstances, according to the stable occlusal relationship of the upper and lower teeth in the oral cavity, the upper jaw can be directly framed to make a casting type posterior double-slope guide plate appliance. However, for patients with functional mandibular occlusal deviation, the occlusal relationship needs to be reconstructed with wax. Target: The midline of the upper and lower jaws is aligned (the center of the mandible and chin is on the midline of the face).

S3. Prepare wax-ups on the maxillary slope 1 and the mandibular slope 4 respectively on the jaw frame according to the design. For the oblique guide area of the cast-type posterior double-incline guide plate appliance, the wax-up of the unilateral long-incline of the maxilla or mandible is generally made first and adjusted into shape, and then the wax-up of the opposite inclination is made. Embedded in wax, cast, polished, polished for clinical use.

S4. Wearing a casting-type posterior double-slope guide plate appliance. Advise patients to wear it throughout the day, including eating and sleeping. After the anterior crossbite is released, the slope is ground down step by step to facilitate the establishment of posterior teeth. After removing the cast-type posterior double-slope guide plate appliance, the headgear-chin pocket can be used to maintain it for 1-3 years.

Although the terms maxillary bevel 1, maxillary clasp 2, maxillary connector 3, mandibular bevel 4, mandibular clasp 5, and mandibular connector 6 are used in this paper, the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention. It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. a kind of cast type backteeth double inclined plane guide plate appliance, it is characterised in that：Include it is coordinating with upper jaw backteeth and it is preceding it is thick after The oblique upper jaw inclined-plane of thin declining forward, the upper jaw snap ring being fixed on upper jaw inclined-plane on upper jaw backteeth connect both sides upper jaw inclined-plane The upper jaw connector that connects, with mandible posterior cooperation and the matched lower jaw inclined-plane of front-thin-rear-thick and upper jaw inclined-plane, by lower jaw inclined-plane The lower jaw snap ring being fixed in mandible posterior, the lower jaw connector for connecting both sides lower jaw inclined-plane, upper jaw inclined-plane, upper jaw snap ring and Upper jaw connector is integrally cast by alloy, and lower jaw inclined-plane, lower jaw snap ring and lower jaw connector are integrally cast by alloy, Upper jaw inclined-plane and lower jaw inclined-plane can be used in chewing.

2. cast type backteeth double inclined plane guide plate appliance as described in claim 1, it is characterised in that：The length on upper jaw inclined-plane is Since Maxillary first premolar mesial surface backward on finally grind one's teeth in sleep distal surface to the upper jaw, the length on lower jaw inclined-plane be from lower jaw most Distomolar distal surface starts to front lower between lower jaw first bicuspid and lower jaw canine tooth.

3. cast type backteeth double inclined plane guide plate appliance as claimed in claim 2, it is characterised in that：Upper jaw inclined-plane and lower jaw are oblique The length in face is 25-35mm.

4. cast type backteeth double inclined plane guide plate appliance as described in claim 1, it is characterised in that：Upper jaw inclined-plane and lower jaw are oblique The width in face can cover the conjunction face of backteeth.

5. cast type backteeth double inclined plane guide plate appliance as claimed in claim 4, it is characterised in that：Upper jaw inclined-plane and lower jaw are oblique The width in face is 6-12mm.

6. cast type backteeth double inclined plane guide plate appliance as described in claim 1, it is characterised in that：Upper jaw inclined-plane and lower jaw are oblique The overall thickness of the thinnest part 0.5mm in face, upper jaw inclined-plane and lower jaw inclined-plane, which are subject to, to open 1mm by upper lower incisor.

7. cast type backteeth double inclined plane guide plate appliance as claimed in claim 6, it is characterised in that：Upper jaw inclined-plane and lower jaw are oblique The thickness in face is 3-6mm.

8. cast type backteeth double inclined plane guide plate appliance as described in claim 1, it is characterised in that：Upper jaw snap ring is from the upper jaw The two-arm clasp of the packet rich upper jaw posterior dental crown cheek side and tongue side stretched out on inclined-plane, lower jaw snap ring are stretched out from lower jaw inclined-plane The two-arm clasp of packet rich mandible posterior corona cheek side and tongue side.

9. cast type backteeth double inclined plane guide plate appliance as claimed in claim 8, it is characterised in that：Upper jaw snap ring is mounted on upper On jaw first bicuspid and maxillary first molar, lower jaw snap ring is mounted on lower jaw first bicuspid and mandibular first molar.

10. cast type backteeth double inclined plane guide plate appliance as described in claim 1, it is characterised in that：Upper jaw connector is under Jaw connector is the bar of width 3mm, thickness 0.5-1mm, and upper jaw connector is located on maxilla and close to Upper Anterior Teeth away from gum edge 1mm, lower jaw Connector is located at lower labial teeth tongue side away from gum edge 1mm.