Source:Archives of Oral Biology
Author(s): Issei Saitoh, Emi Inada, Yasutaka Kaihara, Yukiko Nogami, Daisuke Murakami, Naoko Kubota, Kaoru Sakurai, Yoshito Shirazawa, Tadashi Sawami, Miyuki Goto, Maki Nosou, Katsuyuki Kozai, Haruaki Hayasaki, Youichi Yamasaki
ObjectiveMouth breathing syndrome (MBS) is defined as a set of signs and symptoms that may be completely or incompletely present in subjects who, for various reasons, replace the correct pattern of nasal breathing with an oral or mixed pattern. It is important to identify the relevant factors affecting MBS in order to diagnose its cause since breathing obstructions can result from multiple factors. The purpose of this study is to clarify the relevant factors and the interrelationships between factors affecting MBS among children.DesignWe surveyed 380 elementary school children from 6 to 12 years in age. The questionnaire consisted of 44 questions regarding their daily health conditions and lifestyle habits and was completed by the children's guardians. A factor analysis was performed to classify closely related questions into their respective factors and to examine the strength of the correlation between the newly revealed factors.ResultsTwenty-six out of the 44 questions were selected, and they were classified into seven factors. Factors 1 to 7 were defined as "incompetent lip seal", "diseases of the nose and throat", "eating and drinking habits", "bad breath", "problem with swallowing and chewing", "condition of teeth and gums", and "dry lips", respectively. There were also correlations between these factors themselves.ConclusionMBS was categorized according to 7 major factors. Because Factor 1 was defined as "incompetent lip seal", which was representative of the physical appearance of mouth breathers and correlated with other factors, we suggested that MBS should consist of 7 factors in total.
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