呼吸方式与牙齿咬合关系的研究

A study on the relationship between respiratiory mode and dental occlusion

目的 :揭示呼吸方式与牙齿咬合的关系。方法 :通过口鼻气流同步测定系统的随机检测 ,选择鼻呼吸比例≤ 70 % (口呼吸组 )及≥ 95 % (鼻呼吸组 )的 11～ 14岁儿童各 34人 ,比较其头颅定位侧位片中牙牙合指标的差异 ,及与口呼吸比例的相关关系。结果 :口呼吸儿童与鼻呼吸儿童相比前牙覆牙合(OB)较浅、覆盖 (OJ)无差异 ,牙弓突度较大。口呼吸比例与覆牙合 (OB)呈负相关 ,与上下中切牙角 (UI LI)呈负相关。结论

砄bjective: To study the relationship between respiratiory mode and dental occlusion. Methods: UI SN, LI MP, UI LI, OB, OJ and M1～M2 were measured with cephalometric technic in 34 oral breathing children and 34 nasal breathing children (aged 11～14 years) . Results: UI LT and OB in the children with oral breathing were smaller than those in the children with nasal breathing( P <0.01 and P <0.05 respectively); while UI SN, LI MP, OJ and M1～M2 values in the two groups of children were not significantly different( P >0.05). Conclusion: The children with oral breathing may have smaller oberbite and more proclined dental arch.