골격성 하악전돌증 환자의 유전적 경향에 대한 분석
Analysis of familial tendency in skeletal class III malocclusion
이창환, 이상한, 김현수, 권대근,
소속 상세정보
이창환 ( Lee Chang-Hwan ) - 경북대학교 치과대학 구강악안면외과학교실
이상한 ( Lee Sang-Han ) - 경북대학교 치과대학 구강악안면외과학교실
김현수 ( Kim Hyun-Soo ) - 경북대학교 치과대학 구강악안면외과학교실
권대근 ( Kwon Tae-Geon ) - 포천중문의과대학 치과 구강외과학교실
KMID : 0355620060320060506
Abstract
The purpose of this study was to examine the familial tendency of the patients with mandibular prognathism in three generations and to define the relationship between the familial tendency and the skeletal class Ⅲ morphology. The probands of this study were 103 orthognathic surgery patients with skeletal Class III malocclusions who had undergone (48 men, 55 women) mandibular set-back surgery. A questionnaire was given to patients who sought surgical treatment for excessive mandibular length, and all answers were confirmed in interviews. Lateral cephalograms were analyzed in cranial base parameters, mandibular positional parameters and mandibular skeletal parameters. In the examined families, 58.3% had at least one member other than the proband who had mandibular prognathism. The affected ratio of total relatives was 4.5%, and the value was higher in first-degree (13.4%) than second-degree (5.9%) and third-degree relatives (1.7%). The affected ratio was 51.9% in the offsprings who had at least one affected father or mother. The comparison of the groups according to the familial tendency showed no significant craniofacial skeletal measurments. In conclusion, skeletal class Ⅲ malocclusion showed high familial tendency, suggesting a significant genetic influence in the etiology. However, the patient’s familial tendency did not show the special craniofacial patterns compare to the subjects without familial tendency.
키워드
Skeletal class Ⅲ malocclusion;Genetics;Familial tendency
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