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

Sung Hwan Choia, Jung Suk Kimb, Cheol Soon Kimb, Chung Ju Hwang

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 1.6o 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.

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalKorean Journal of Orthodontics
Volume46
Issue number2
DOIs
Publication statusPublished - 2016 Mar

All Science Journal Classification (ASJC) codes

  • Orthodontics

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