The Comparison of Influence of Difficulties in Nasal Breathing on Dentition between Different Facial Types

비호흡 장애가 치열에 미치는 영향에 관한 안모 형태별 비교 연구

It is commonly assumed that nasorespiratory function can exert a dramatic effect upon the development of the dentofacial complex. Specially, it has been stated that chronic nasal obstruction leads to mouth breathing, which causes altered tongue and mandibular positions. If this occurs during a period of active growth, the outcome is development of the "adenoid facies". Such patients characteristically manifest a vertically long lower third facial height, narrow alar bases, lip incompetence, a long and narrow maxillary arch and a greater than normal mandibular plane angle. But several authors have reported that so-called adenoid facies is not always associated with adenoids and mouth breathing, and that a particular type of dentition is not always found in mouth breathers with or without adenoids. Some authors have believed adenoids lead to mouth breathing in cases with particular facial characteristics and types of dentition. We assumed that the ability to adapt to individual's neuromuscular complex is various. So, we compared the difference of influence of mouth breathing between childrens who have different facial types. This study included 60 patients and they were divided into three groups by Rickett's facial type. Their dentition and tongue position were compared. The results are as follows. 1. There is a significant difference in arch width of upper molars between different facial types. Especially dolichofacial type patients have narrowest arch width. 2. There is a significant difference in tongue position between different facial types. Especially dolichofacial type patients have lowest positioned tongue.

인두편도 증식으로 인한 비호흡 장애가 치열 및 핵의 위치에 미치는 영향을 안모형태에 따라 비교 연구하기 위해 인두편도 증식으로 인두편도 절제술을 시행하기로 한 환자의 안모를 형태에 따라 mesofacial, brachyfacial, dolichofacial type으로 분류하여 각 type별로 20명의 환자를 설정하여 서로 비교 연구한 결과 1. 상악 구치부 치열궁 폭경에 있어서 안모 형태에 따른 유의한 차이를 보였으며, dolichofacial type의 안모를 가진 환자에서 가장 좁은 상악 구치부 치열궁 폭경을 보였다. 2. 혀의 수직적 위치에 있어서 안모형태에 따른 유의한 차이를 보였으며, dolichofacial type의 안모를 가진 환자에서 혀가 가장 하방에 위치함을 보였다.