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Tooth-borne type upper jaw bone distractor

A supportive, jawbone technique, applied in dentistry, orthodontics, dental prosthetics, etc., can solve problems such as no obvious curative effect, and achieve the effect of avoiding the aggravation of velopharyngeal insufficiency, maintaining oral function, and maintaining the integrity of the dentition

Pending Publication Date: 2017-12-15
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such techniques can only correct the underdevelopment of the maxilla in the sagittal direction, and have no obvious effect on the existing underdevelopment of the maxilla in the horizontal direction. Patients still need other treatments to correct the deformity

Method used

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  • Tooth-borne type upper jaw bone distractor
  • Tooth-borne type upper jaw bone distractor
  • Tooth-borne type upper jaw bone distractor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 The structure of tooth-supported maxillary distractor

[0024] The structure of the tooth-supported maxillary distractor and the rotator used in conjunction with it will be described in conjunction with the accompanying drawings.

[0025] 1. Structure of tooth-supported maxillary distractor

[0026] combine Figure 1-4 Describe the structure of the tooth-supported maxillary distractor. The retractor includes a shell 11 with a spherical inner cavity, a first umbrella component 2, two second umbrella components 3, and a retaining rod connected to each umbrella component by thread. The front, rear, left and right sides of the shell are each provided with a circular opening, the central axes of the four openings are coplanar and intersect at the center of the inner cavity of the shell, and the included angle between the central axes of two adjacent openings is 90˚; each umbrella-shaped part includes a bevel gear whose large end surface is spherical and small...

Embodiment 2

[0036] Example 2 The use method and effect of tooth-supported maxillary distractor

[0037] A typical case of sagittal and horizontal two-way hypoplasia of the maxilla—a patient with unilateral cleft lip and palate—is used as an example to illustrate the specific use of the distractor in Example 1. The maxillary dentition model of a typical unilateral cleft lip and palate patient, such as Image 6 As shown, it manifested as narrowing of the dental arch and crowding of the dentition. The main cause of the above clinical manifestations was the underdevelopment of the maxilla in the sagittal and horizontal directions.

[0038] The steps and principles of rectification with distractors: the operation is performed under general anesthesia, and the operation is performed after routine disinfection and draping. After disinfection in the oral cavity, inject normal saline containing 5 parts of epinephrine along the maxillary vestibular groove to reduce bleeding. After the effect, the ...

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Abstract

The invention provides a tooth-borne type upper jaw bone distractor, relating to the field of oral jaw bone correction devices. The distractor comprises a shell, a first umbrella-shaped component, a second umbrella-shaped component and a retention lever, wherein four openings are formed in the shell, the central axes of the openings are coplanar and crossed in the center of the shell inner cavity, and the included angle between the central axes of the two adjacent openings is 90 degrees; each umbrella-shaped component comprises a bevel gear with a large spherical end surface, and a circular tube connected with the bevel gear; the first umbrella-shaped component is arranged front and back, the bevel gear is positioned in the shell inner cavity, the small end surface of the bevel gear is connected with the circular pipe, a boss is arranged on the large end surface of the bevel gear, the circular pipe penetrates through the opening in the front side, and the boss penetrates through the opening in the rear side; the second umbrella-shaped component is arranged in horizontal direction, the bevel gear is positioned in the shell inner cavity, the large end surface of the bevel gear is connected with the circular pipe, and the circular pipe penetrates through the openings in the left side and the right side respectively; and the bevel gear of the first umbrella-shaped component is meshed with that of the second umbrella-shaped component, so that the retention lever is moved outwards. The distractor can simultaneously correct medium and severe defects of maxilla anteroposterior growth and horizontal two-way development.

Description

technical field [0001] The invention relates to the field of oral and maxillary correction instruments, in particular to a tooth-supporting maxillary distractor. Background technique [0002] At present, dento-maxillofacial deformity has become a common and frequently-occurring disease in the oral and maxillofacial region, seriously affecting the oral and jaw function and appearance of patients, and often requires orthodontics or combined orthodontics and orthodontics to correct the deformity. Some patients (especially those with cleft lip and palate) have relatively serious underdevelopment of the maxilla, which is mainly reflected in the underdevelopment of the maxilla in the horizontal and sagittal directions. Overbite or lockjaw in the dental area, severe crowding and misalignment of the maxillary dentition, etc. In the past, such deformities were treated simply by using tooth-supported transverse expanders or corrective arch wires to correct the horizontal hypoplasia o...

Claims

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Application Information

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IPC IPC(8): A61C7/00A61C7/08
CPCA61C7/00A61C7/08
Inventor 程杰葛涵刁鹏飞江宏兵马俊青王琰玲李中武吴亚平
Owner AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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