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Thickness Changes of the Lower Lip in Mouth Breathing Children and Adolescent  

Jeong, Young-Ho (Department of orthodontics, Sacred heart hospital, Hallym university)
Lee, Sang-Min (Department of orthodontics, School of Dentistry, Dankook University)
Yang, Byun-Ho (Seoul Y Orthodontic clinic)
Park, In-Young (Department of orthodontics, Sacred heart hospital, Hallym university)
Lee, Il-Hong (Department of orthodontics, Sacred heart hospital, Hallym university)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.28, no.1, 2012 , pp. 47-56 More about this Journal
Abstract
As attractive lips are important component of appealing faces, the study was conducted to investigate the association of mouth-breathing and thickness of lower lips in mouth-breathers and nasal-breathers. The subjects were 436 adolescent patients aged 8~18 years who took cephalometrics. The results were as follows. The ratio of lower lip thickness to that of upper lip thickness in mouth breathing and nasal breathing groups were $1.13{\pm}0.14$, $1.02{\pm}0.14$, respectively. According to subjects' skeletal pattern, the ratio in Class I sample was $1.05{\pm}0.09$. Class II subjects showed $1.20{\pm}0.12$, and Class III showed $0.97{\pm}0.11$. Mouth - breathers had higher lower/upper lip ratio than nasal breathers meaning their lower lips were thicker. Skeletal Class II patients group showed the most thickest lower lips among Class I, II, III subgroups.
Keywords
mouth-breathing; thickness of lips;
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