대한치과교정학회지 (The korean journal of orthodontics)

  • 제17권1호
  • /
  • Pages.15-21
  • /
  • 1987
  • /
  • 2234-7518(pISSN)
  • /
  • 2005-372X(eISSN)
대한치과교정학회 (The Korean Association Of Orthodontists)
권호 표지

과개교합, 개교합 및 정상교합의 교근침묵기에 관한 연구

A STUDY OF MASSETERIC SILENT PERIOD OF DEEP MITE, OPEN BITE AND NORMAL OVER BITE

  • 문철현 (전남대학교 치과대학 교정학교실) ;
  • 정현수 (전남대학교 치과대학 교정학교실)
  • Moon, Cheol-Hyun (Department of Orthodontics, College of Dentistry, Chonnam National University) ;
  • Chung, Hyun-Soo (Department of Orthodontics, College of Dentistry, Chonnam National University)
  • 발행 : 1987.03.01
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초록

The present study was carried out to investigate the relationships between the depth of overbite and the masseteric silent period. Normal subjects of 44 were selected, which consisted of 9 open bites, 24 normal overbites and 11 deep bites, all were 19-29 years of age. EMG activity was recorded on the bilateral masseteric muscles and craniofacial radiography was done. The following results were obtained. 1. The mean duration of masseteric silent period was $18.58{\pm}4.50$ msec in open bite, $17.37{\pm}7.05$ msec in normal overbite and $19.30{\pm}7.62$ msec in deep bite groups. 2. There were no significant differences on masseteric silent period among open bite, normal overbite and deep bite groups. 3. There were no significant correlations between masseteric silent period and craniofacial variables.

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