Correlation between the Inclinations of the Incisors and Lips in Mixed Dentition

Sungdong Oh; Je-Woo Lee; Jinyoung Kim; Jiyoung Ra

doi:10.5933/JKAPD.2018.45.1.21

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.

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* 2021년 이후 발행 논문의 참고문헌은 현재 구축 중입니다.

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