Correlation between the Inclinations of the Incisors and Lips in Mixed Dentition
10.5933/JKAPD.2018.45.1.21
- Author:
Sungdong OH
1
;
Jewoo LEE
;
Jinyoung KIM
;
Jiyoung RA
Author Information
1. Department of Pediatric Dentistry, College of Dentistry, Wonkwang University, Korea. pedojy@wku.ac.kr
- Publication Type:Original Article
- Keywords:
Inclination of the incisors;
Lower-nasolabial angle;
Mentolabial angle
- MeSH:
Child;
Classification;
Dentition, Mixed;
Humans;
Incisor;
Lip;
Malocclusion
- From:
Journal of Korean Academy of Pediatric Dentistry
2018;45(1):21-31
- CountryRepublic of Korea
- Language:Korean
-
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.
