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目的评价劲润牙本质保护膜(Hybrid coat)对活髓基牙预备后牙本质敏感的防治效果。方法将54例(共115颗)进行固定桥修复行牙体预备的基牙,对缺牙区两侧基牙随机分组,试验组在牙体预备后表面用劲润牙本质保护膜处理,对照组牙体预备后不做任何处理,所有基牙均采用暂时冠修复,备牙后和10天试戴修复体时观察治疗效果,评定疗效,并对戴牙前评定的疗效进行统计学分析。结果经劲润牙本质保护膜处理过的基牙牙本质敏感症状明显改善,两次疗效比价,有效率差别有统计学意义(P<0.05)。结论劲润牙本质保护膜可以有效防治活髓基牙预备后的牙本质敏感症状,值得在临床上推广应用。
Objective To evaluate the preventive and therapeutic effect of hybrid coat on the dentin after the preparation of vital pulp abutment. Methods 54 abutments (total of 115) were used to repair dental abutments. Tooth abutments on both sides of the tooth were randomly divided into two groups: All the abutments were treated with temporary crown restoration, preparation of teeth and wearing of prosthesis for 10 days to observe the therapeutic effect, to assess the curative effect, and to make a statistical analysis of the curative effect of pre-tooth evaluation. Results The dentin hypersensitivity of mandibular dentine treated with ZNR significantly improved. There was a significant difference between the two curative rates and the effective rate (P <0.05). Conclusion Jinrun dentin protective film can effectively prevent and treat the dentine hypersensitivity symptoms after the preparation of vital pulp, which is worth popularizing in clinic.