Statistical study of the depth of the gingival sulcus in the primary teeth

치의학과/석사[한글] 저자는 연세대학교 치과대학 부속병원 소아치과에 내원한 환자와 원주지역 유아원 원아로서 1년8개월에서 10년2개월 사이의 남녀 아동중 333개의 정상상태의 유치를 선택하여 치은열구의 깊이를 부위별로 측정, 통계학적으로 연구 분석한 결과 다음과 같은 결론을 얻었다. 1. 순면이 1.56±0.29mm로 제일 얕았으며, 설면은 1.66±0.31mm로 순면보다 설면이 깊었다. 2. 근심은 1.98±0.19mm이며, 원심은 2.02±0.31mm로 순, 설면에 비해 깊어써으며, 근심과 원심에 있어 통계학적인 유의차는 없었다. 3. 유중절치는 1.71±0.33mm, 유견치는 1.75±0.24mm, 제2유구치는 2.03±0.34mm로 전치에서 구치로 갈수록 깊어졌다. 4. 상악이 1.86±0.29mm이고 하악이 1.76±0.37mm로 상악이 하악보다 깊었다. 5. 하악 유중절치가 1.62±0.31mm로 제일 얕았고 상악 제2유구치가 2.07±0.39mm로 제일 깊었다. 6. 유치열기와 혼합치열기에 있어서 치은열구의 깊이의 차이는 없었다. [영문] Author have measured the depth of gingvial sulcus of the primary teeth. 333 teeth were selected from the children who attended on the department of pedodontic, College of dentistry, Yonsei University, and kindergarten children at Won Ju city aged from 1 year 8 months to 10 year 2 months. 1998 point were measured. The result were as follows.; 1. Facial surface was the shallowest in sulcus depth compared with other surfaces. It was 1.56mm. The depth of sulcus in lingual surface was deeper than facial. 2. The deepest part of each surface was mesial and distal. There were no statistical differences between mesial and distal part of the sulcus depth. 3. The mean sulcus depth of each tooth was as follows. Primary central incisor.......1.71mm. Primary canine................1.75mm. Primary second molar..........2.03mm. 4. The mean sulcus depth of upper was 1.86mm, and the lower was 1.76mm. The upper tooth was deeper than lower in sulcus depth. 5. The lower primary central incisor had the shallowest sulcus and the upper 2nd primary molar had the deepest compared with other tooth 6. There wasn't specific statistical differences between the age groups of primary dentition and mixed dentition.restrictio