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The influence of age on lip-line cant in adults: a cross-sectional study.

Authors
 Sung Hwan Choi  ;  Jung Suk Kim  ;  Cheol Soon Kim  ;  Chung Ju Hwang 
Citation
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.46(2) : 81-86, 2016 
Journal Title
 Korean Journal of Orthodontics  (대한치과교정학회지) 
ISSN
 1225-5610 
Issue Date
2016
Keywords
Adults ; Age ; Lip-line cant ; Menton deviation
Abstract
OBJECTIVE: The aims of this study were to assess the direction and degree of lip-line cant in Korean adult orthodontic patients and to identify the effects of sex and age on changes in the cant severity. METHODS: In this cross-sectional retrospective study, lip-line cant was measured in the frontal photographs of 585 Korean patients (92 men and 493 women) aged 18-48 years. The outcome variables (direction and degree of lip-line cant) were assessed in terms of predictor variables (sex, age, sagittal skeletal relationship, and menton deviation angle). RESULTS: The direction of lip-line cant did not differ according to sex, age, or skeletal classification. Patients had 1.6° of lip-line cant on average before orthodontic treatment. Middle-aged adults displayed a significant trend toward a lower degree of lip-line cant compared to younger adults (p < 0.01). Multiple linear regression analysis showed that the degree of lip-line cant was weakly negatively correlated with age (p < 0.001). CONCLUSIONS: While the direction of lip-line cant did not differ according to the parameters explored here, the degree of cant was correlated with age in adults, independent of menton deviation. Specifically, middle-aged adults tended to display significantly lower degrees of lip-line cant than did younger adults.
Files in This Item:
T201601027.pdf Download
DOI
10.4041/kjod.2016.46.2.81
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
최성환(Choi, Sung Hwan) ORCID logo https://orcid.org/0000-0002-1150-0268
황충주(Hwang, Chung Ju) ORCID logo https://orcid.org/0000-0003-3024-4551
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/146650
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