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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。结果正常对照组龈粘膜结构清楚,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;牙擦巾组牙龈粘膜皱襞结构明显,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极小,均优于普通牙刷;牙擦巾又略优于硅胶牙刷。
Objective To observe the degree of gingival injuries caused by different toothbrushes and dental wipes. Methods The common nylon toothbrush, silicone toothbrush and dental wipe were swabbed in the gums of rabbits for 50 times respectively, and then immediately taken, formalin fixed, paraffin section, HE staining and light microscopy. Results The structure of gingival mucosa in normal control group was clear, the thickness of keratinized layer was consistent and no damage was found. In normal nylon toothbrush group, the keratinized layer became thinner and thinner, and the surface of spinous cells slightly damaged. Cell detachment; tooth wipe group gingival mucosa fold structure is obvious, part of keratinized layer thickness uneven, no loose change. Conclusion Dental wipes and silicone toothbrush have minimal damage to gingiva, which are better than ordinary toothbrush.