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KMID : 1004520120280010047
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Journal of Dental Rehabilitation and Applied Science
2012 Volume.28 No. 1 p.47 ~ p.56
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Thickness Changes of the Lower Lip in Mouth Breathing Children and Adolescent
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Jeong Young-Ho
Park In-Young
Lee Il-Hong
Lee Sang-min
Yang Byun-Ho
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Abstract
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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±0.14, 1.02±0.14,respectively. According
to subjects? skeletal pattern, the ratio in Class I sample was 1.05±0.09. Class II subjects showed 1.20±0.12, and Class
III showed 0.97±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.
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KEYWORD
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mouth- breathing, thickness of lips
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