多聚甲醛糊剂绷带治疗牙颈部牙本质过敏症的临床及实验研究

目的：通过对多聚甲醛糊剂绷带在临床的应用效果及实验研究，对多聚甲醛糊剂绷带的作用机制进行探讨。方法：临床观察牙颈部牙本质过敏76名患者，101颗牙，用多聚甲醛糊剂进行治疗并观察疗效。在实验室中通过渗透实验和扫描电镜观察在药物作用下离体牙表面的渗透性改变及形态改变。结果：临床治疗的总有效率为79%，未观察到牙髓、牙龈组织的损害，实验室观察到离体牙表面渗透性有所降低，电镜观察牙本质小管有部分堵塞，结论：多聚甲醛糊剂绷带是一种疗效较好的牙颈部脱敏剂，其作用机制是在多种效应共同作用下完成的。

LABORATORY AND CLINICAL EVALUATION OF THE EFFECT OF PARAFORMALDEHYDE PASTE ON THE TREATMENT OF TOOTH HYPERSENSITIVITY Wang Hong-yuan et al Faculty of Stomatology,Capital University of Medical Sciences,Beijing 100050

Objective:To investigate the effect of paraformaldehyde paste on the treatment of tooth hypersensitivity.Methods:Seventy six patients,101teeth were included for clinical evaluation.The osmotaxis changes on the surface of extracted teeth induced by the medical effects were observed in permeability test and the histological changes were observed under SEM.Results:The successful rate was 79%,no irritation of damage to pulp and gingivae in clinical.The observations showed that the dentinal tubules were obstructed and permeability was reduced.Conclusion:Paraformaldehyde paste has good effect on cervical hypersensitivity.