不同牙防用具对兔牙龈损伤的病理学观察
LABORATORY ANIMAL AND COMPARATIVE MEDICINE(2010)
Abstract
目的 观察不同牙刷及牙擦巾对牙龈损伤的程度.方法 将普通尼龙牙刷、硅胶牙刷和牙擦巾分别在兔牙龈刷擦50次后,立即取材,福尔马林固定,石蜡切片,HE染色,光镜观察.结果 正常对照组龈黏膜结构清楚,角化层厚薄一致,无损伤变化;普通尼龙牙刷组角化层明显松懈变薄,棘细胞表层轻度损伤;硅胶牙刷组角化层变薄松散,部分棘细胞脱离;牙擦巾组牙龈黏膜皱襞结构明显,部分角化层厚薄不均,无松散改变.结论 牙擦巾和硅胶牙刷对牙龈损伤较小,均优于普通牙刷;牙擦巾又略优于硅胶牙刷.
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