在日常生活中．学生、家长及教师对龋齿及其危害性都已有所了解，而对咀嚼习惯好坏却不够重视。为了解咀嚼习惯与深龋齿间相互关系，增进口腔卫生，我们进行了调查。1对象与方法以中小学生3180名为对象。采用口腔检查常规和询问方法进行检查和记录。2结果与分析（见表1、2）单 in daily life. Students, parents and teachers have known about dental caries and their harmfulness, but not enough emphasis on chewing habits. To understand the relationship between chewing habits and deep caries, and to promote oral health, we conducted a survey. 1 objects and methods 3180 primary and secondary students as the object. Using oral examination routine and inquiry method to check and record. 2 results and analysis (see Table 1, 2) single