纳米TiO2陶瓷涂层托槽对菌斑附着的影响-医学论文写作技巧 医学杂志投稿-搜狐空间 Keywords】 dental plaque index; bracket; nano [gap=378]关键词】 牙菌斑指数；托槽；纳米
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目的通过调查固定矫治器治疗中牙冠表面托槽周围的牙菌斑指数评价固定矫治器对龋病的影响。
Objective to evaluate the effect to caries of the fixed appliance by the investigation of plaque index on the crown surface of teeth at the different stages.
在基线及2、4、6、8、10、12周时由检查者单盲法评估如下指标：牙菌斑指数(PI)，探入后出血(BOP)和探入深度(PD)。
The following clinical parameters were measured at baseline, 2, 4, 6, 8, 10 and 12 weeks after treatment: plaque index (PI), bleeding on probing (BOP) and probing depth (PD).
方法对175名12～ 14岁儿童2年中新增龋与基线DMFS、口腔卫生行为、菌斑指数和牙菌斑中无机成分等指标进行纵向观察；
Methods Subjects were 175 of 12~14 years old schoolchildren. DMFS, plaque scores and oral health behavior were recorded in baseline, year 1 and year 2 examinations.
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