成年人刷牙效果的初步分析

目的观察刷牙前后全口恒牙的牙菌斑附着状况,分析成人的刷牙效果。方法记录81名大学生的刷牙时间及刷牙前后各牙面菌斑指数(PLI)。结果81名受检对象刷牙用时28s～2min32s,平均为57s,男性平均为49s,女性平均为64s,两者之间有显著性差异(P<0.05)。刷牙后上颌牙PLI为0.33±0.02,下颌牙为0.47±0.03,两者之间具有显著性差异(P<0.05)。刷牙后男性PLI为0.532±0.04,女性为0.295±0.03,两性间有显著性差异(P<0.05)。受检者有菌斑牙面数及PIL较高的牙位是上、下颌磨牙,有菌斑牙面数及PIL较高的牙面为下颌磨牙的舌侧面,上颌磨牙的腭侧面。结论人群刷牙时间不足,上述菌斑附着多的牙及牙面需要强化刷牙,男性应加强刷牙。

An Analysis of the Effect of Adult Tooth-Brushing

OBJECTIVE: This study observed plaque distribution on permanent dentition before and after brushing to analyze the effect of adult tooth-brushing. METHODS: 81 undergraduate were included in this study. Recorded the time of tooth-brushing, stained with disclosing tablets, plaque deposits on all permanent teeth were recorded using plaque index (PLI) before and after tooth-brushing. RESULTS: The time of tooth-brushing was from 28 s to 2 min 32 s, the mean time was 57 s, the males' was 49 s, the females' was 64 s. Statistically significant differences (P < 0.05) were found between males and females. The mean PLI of maxillary tooth was 0.41 +/- 0.03, for mandibular tooth was 0.47 +/- 0.03, there was significant difference between maxillary and mandibular. After brushing, the mean PLI of males was 0.532 +/- 0.04, of females was 0.295 +/- 0.03, there was significant difference of PLI between males and females (P < 0.05). These tooth PLI score were higher than other's mandibular and maxillary molars, these surface PLI score were higher than other's, buccal surface of maxillary molars and palatal site of maxillary molars. CONCLUSION: People should spend more time on brushing tooth. Tooth brushing should be emphasized on these tooth and surfaces with higher PLI score. Man should pay more attention to tooth brushing.