West China Journal of Stomatology

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Craniofacial Characteristics of the ClassⅡDivision 1 Malocclusion Patients with Mouth-breating: A Posteroanterior Cephalometric Study

LIUXiao-jun,YAOShuang,YANGShuang,YANGPing,XUQing,WANGBing,WANG Wen-hong   

  1. Dept.ofOrthodontics,The SecondHospital ofYunnan Province,Kunming650021,China
  • Received:2005-06-25 Revised:2005-06-25 Online:2005-06-20 Published:2005-06-20
  • About author:刘晓君(1964-),女,四川人,副主任医师,学士
  • Supported by:

    云南省自然科学基金资助项目(2004C0069M);云南省教育厅科学研究基金资助项目(04Y879C)

Abstract:

Objective To evaluate the craniofacial characteristics of the ClassⅡ1malocclusion patientswithmouth-breating by posteroanterior cephalometry.Methods To measure craniofacial width of the 12 ClassⅡ1malocclusion patients with mouth- breathing, and to compared these measureswith correspondingmeasures in a group of normal children.Results The width of the maxillary base bone (J-J) was less than that in normal children significantly(P<0·01). The mouth-breathing children′s upper and lower archwidth (at firstmolar and cuspid) were comparatively narrower, and lateronasalwidth (Lap-Lap) was narrowertoo. Conclusion Mouth breathing may lead to craniofacial morphological abnormal development in craniofacial transverse structures.

Key words: mouth-breathing, ClassⅡdivision 1 malocclusion, posteroanterior cephalometric