Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Correlation between the Inclinations of the Incisors and Lips in Mixed Dentition

혼합치열기 아동의 전치 경사도와 입술 경사도 사이의 상관관계

  • Oh, Sungdong (Department of Pediatric Dentistry, College of Dentistry, Wonkwang University) ;
  • Lee, Jewoo (Department of Pediatric Dentistry, College of Dentistry, Wonkwang University) ;
  • Kim, Jinyoung (Department of Pediatric Dentistry, College of Dentistry, Wonkwang University) ;
  • Ra, Jiyoung (Department of Pediatric Dentistry, College of Dentistry, Wonkwang University)
  • 오성동 (원광대학교 치과대학 소아치과학교실) ;
  • 이제우 (원광대학교 치과대학 소아치과학교실) ;
  • 김진영 (원광대학교 치과대학 소아치과학교실) ;
  • 라지영 (원광대학교 치과대학 소아치과학교실)
  • Received : 2017.04.17
  • Accepted : 2017.07.26
  • Published : 2018.02.28
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Abstract

This study aimed to investigate the correlation between the inclinations of the incisors and lips in mixed dentition aged 7 - 11 years. Lateral cephalometric radiographs of 353 children were analyzed to measure the upper incisor inclination, lower incisor inclination, lower-nasolabial angle, and mentolabial angle in relation to the skeletal malocclusion classification. The measurements were then assessed using the Kruskal-Wallis test, Pearson correlation, and multiple regression analysis. There were significant negative correlations between the inclination of the upper incisors and lower-nasolabial angle in all classes of skeletal malocclusion. There was a negative correlation between the inclination of the lower incisors and mentolabial angle; however, class II malocclusion had a significant positive correlation. This study identified the factors that affect lip inclination and verified their associations.

본 연구는 7세에서 11세 사이의 혼합치열기 아동의 전치 경사도와 입술 경사도 사이의 연관성을 알아보고자 하였다. 353명의 측모두부방사선 사진을 분석하여, 골격성 부정교합의 분류에 따른 상악 전치 경사도, 하악 전치 경사도, 하-비순각, 이순각을 평가하였다. 측정된 수치는 Kruskal-Wallis test와 피어슨 상관분석 및 다중회귀분석을 통해 평가하였다. 모든 골격성 부정교합에서 상악 전치 경사도와 상순 경사도 사이에는 유의한 음의 상관관계가 확인되었고, 하악 전치 경사도와 하순 경사도 사이에는 음의 상관관계가 확인되었으나 2급 부정교합에서는 유의할만한 양의 상관관계가 확인되었다. 본 연구를 통해 입술 경사도에 영향을 미치는 요인들을 확인하고 그 연관성을 확인할 수 있었다.

Keywords

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