乳牙菌斑附着部位的分析

目的观察分析全口乳牙的菌斑附着状况。方法应用菌斑染色片对120名5岁幼儿进行乳牙菌斑检查。结果120名儿童PI均值为1.69±0.01，男、女间无显著性差异；上后牙颊面PI最高；乳磨牙菌斑总量高于乳前牙；上颌牙唇颊侧菌斑附着多于腭侧、下颌牙舌侧多于唇颊侧。结论上述菌斑附着多的牙及牙面需强化刷牙。

A study of dental plaque distribution on diciduous dentition

Objective　This study observed plaque distribution on primary dentition to offer more scientific toothbrushing instruction.Methods　120 5-year old children were included in this study.After stained with disclosing tablets,plaque deposits on all primary teeth were recorded using plaque index(PI).Results　The mean PI was 1.69±0.01;There was no significant difference of PI between boys and girls.Buccal surface of upper posterior molar showed the highest PI Score among all areas.Compared to anterior teeth,posterior teeth manifested higher PI.In maxillary dentition,deposits on labial surface were more than those on palatal site.While in mandibular dentition,dental plaque was more serious on lingual site.Conclusion　Toothbrushing should be emphasized on those areas with higher PI score.