The survey also shows that bed-time sugar intake, late start of brushing teeth and weak awareness of teeth care are to blame for the bad dental health among Chinese children.

调查结果还显示，导致我国儿童口腔疾病的主要原因为睡前进食含糖食物、开始刷牙时间过晚以及口腔保健意识缺乏。

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Objective:To evaluate the distortion rate of dental implant bed in the jaw by the orthopantomography.

目的：探讨颌骨不同种植部位在曲面断层片上的失真率。

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