摘要
目的评价牙本质即刻封闭技术对牙体预备后活髓基牙牙本质敏感程度的影响。方法 30例患者行后牙三单位固定义齿修复,每例口内有2颗活髓后牙参与实验,基牙随机分为实验组和对照组。实验组在基牙预备后行即刻牙本质封闭,随后取模。对照组在基牙预备后常规取模,不进行即刻牙本质封闭。1周后行最终修复,全冠粘接后1周、1个月、6个月、12个月和18个月时检查记录患者的牙本质敏感程度,并进行统计学分析。结果固定义齿粘接后1周及1个月,实验组出现敏感基牙数少于对照组(1周:Z=-1.88,P=0.03;1个月:Z=-2.15,P=0.02)。粘接后6、12及18个月两组敏感发生率间差异无统计学意义(6个月:Z=-0.69,P=0.30;12个月:Z=-0.41,P=0.69;18个月:Z=-0.42,P=0.52)。比较两组敏感程度结果显示,实验组敏感的基牙,敏感程度主要为1度;对照组主要为1度及2度。1周及1个月观察点两组疼痛程度差异有统计学意义(1周:P<0.05,1个月P=0.027)。结论活髓基牙牙体预备后行即刻牙本质封闭,可有效降低术后短期内牙本质过敏的发生率,减小患者的术后不适感。
Objective To evaluate the effect of immediate dentin sealing on the prevention of dentin hypersensitivity after crown restoration . Methods Thirty patients received 30 posterior three-unit bridge fixed restorations. Two vital abutment teeth in each patient were allocated randomly into experiment or control groups. Teeth in experiment group （30 teeth） were coated by dentin bonding agent （single bondⅡ） immediately after tooth preparation before making the impression . In control group （30 teeth）, impression was made directly after tooth preparationwithout dentine bonding agent coating . After final restoration cementation, post-operative sensitivity was recorded at baseline （1 week after the insertion） and for recall periods at 1, 6, 12 and 18 months. Results Teeth sensitivity in the experiment group were significantly less than those in the control group at 1 week and 1 month after cementation （1 week Z = -1.88,P = 0.03;1 month Z = -2.15, P = 0.02）, whereas there was no significant difference between the two groups at the end of 6, 12, and 18 months. Scores for teeth sensitivity in experiment group were lower than those in group control , at 1 week and 1 month after cementation （1 week P〈0.001,1 month P=0.027）. Conclusions The effect of dentin bonding agent in the prevention of dentin hypersensitivity after fixed bridge restoration is significant . In our clinical trail, sealingthe abutmenttooth surface immediately after tooth preparation can effectively reduce the abutment hypersensitivity and reduce the patient discomfort .
出处
《中华口腔医学研究杂志（电子版）》
CAS
2014年第5期36-38,共3页
Chinese Journal of Stomatological Research(Electronic Edition)
基金
佛山市科学技术研究计划(2013180)
关键词
牙本质粘接剂
牙本质封闭
牙本质敏感
Dentin bonding agent
Immediate dentin sealing
Dentin hypersensitivity
