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1990年12月,从西安市3所小学一年级学生中,选择具有4只完全萌出第一恒磨牙的6岁儿童100名进行了窝沟封闭,现报告一年效果。 材料和方法 使用可见光固化封闭剂Concise(3M Dental Products)。采用自身对侧对照的设计方法,受试儿童随机确定口腔内涂布的左右侧,临床操作均在牙科椅位上进行。 牙面清洁后,用棉球隔湿,加压空气干燥。37％磷酸酸蚀60秒后,用去离子化水冲洗,并用吸唾器
In December 1990, from the first year of three primary school students in Xi'an, 100 children aged 6 years with 4 first molars with complete eruptions were selected for pit and fissure sealant, and the results for one year are reported. Materials and Methods Visible light curing blocker Concise (3M Dental Products) was used. Using its own contralateral control design method, the children were randomly selected to test oral and oral coating left and right sides, clinical operations are carried out in the dental chair. After cleaning the tooth surface, use a cotton ball to separate the wet and pressurize the air to dry. After etching with 37% phosphoric acid for 60 seconds, rinse with deionized water and use a salimator