Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (7): 1151-1155.doi: 10.3969/j.issn.2095-4344.2013.07.003

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Clippy self-ligating system treats mild and moderate skeletal class Ⅲmalocclusion of permanent dentition at early stage

Wang Lei1, Xiao Rui2, Peng Hui3   

  1. 1 Department of Stomatology, Longnan Hospital, Daqing Oil Field General Hospital Group, Daqing 163453, Heilongjiang Province, China
    2 Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
    3 Department of Orthodontics, Daqing Oil Field General Hospital, Daqing 163001, Heilongjiang Province, China
  • Received:2012-06-06 Revised:2012-07-26 Online:2013-02-12 Published:2013-02-12
  • Contact: Peng Hui, Master, Chief physician, Department of Orthodontics, Daqing Oil Field General Hospital, Daqing 163001, Heilongjiang Province, China penghui568@sina.com
  • About author:Wang Lei, Attending physciain, Department of Stomatology, Longnan Hospital, Daqing Oil Field General Hospital Group, Daqing 163453, Heilongjiang Province, China duoduo2410@sina.com

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Abstract:

BACKGROUND: Skeletal class Ⅲ malocclusion is a complex malocclusion in clinic, which has a great harm to the development of teeth, maxilla and face. Currently, skeletal class Ⅰ malocclusion is often explored in the self-ligating system, and there is yet no reports addressing self-ligating system for treatment of skeletal class Ⅲ malocclusion.
OBJECTIVE: To analyze the results of X-ray lateral cephalometric radiographs and model measurement before and after Clippy self-ligating system treatment of mild and moderate class Ⅲ malocclusion so as to determine the therapeutic effect of Clippy self-ligating system.
METHODS: Thirty-four patients with skeletal class Ⅲ malocclusion were selected from Daqing Oil Field General Hospital Group, aged 11-15 years (averagely 12.8 years), including 21 males and 13 females. The angle of ANB (subspinale, Nasion, supramental) was -2.1° on average. All the patients were treated with Clippy self-ligating system, and maxillary expansion and rapid palatal expansion appliance and auxiliary rehabilitation measures were performed during the treatment. The average course of treatment was 23.7 months. X-ray lateral cephalometric radiographs were shot to measure the relevant data.
RESULTS AND CONCLUSION: (1) After treatment, the teeth of the 34 patients arranged regularly, normal jet and bite was established, and the maxillary and madibuar first molar relationship reached a neutral or slightly mesial relation. (2) The ANB angle was increased by 1.56° and the anterposterior dysplasia indicator decreased by -2.22°. Malocclusion reverted from class Ⅲ to class Ⅰ. (3) The face type of patients was improved. (4) The horizontal width of the maxillary and mandibular dental arch was expanded, and the sagittal length of the maxillary adental arch was increased. The Clippy self-ligating system is able to successfully collect mild to moderate skeletal class Ⅲ malocclusion of early permanent dentition with non-extraction treatment, improves soft tissue profile, expands the horizontal width of the maxillary and mandibular dental arch and increases the sagittal length of the maxillary arch.

Key words: tissue construction, oral tissue construction, skeletal class Ⅲ malocclusion, orthodontic treatment, cephalometric analysis, Clippy self-ligating system, early permanent dentition, mild to moderate, model analysis, tissue construction photographs-containing paper

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