摘要
目的 比较两种粘接剂对四环素牙本质与正常牙本质的粘接性能,为临床四环素牙本质粘接剂的选择提供参考.方法 从四川大学华西口腔医学院口腔颌面外科门诊收集牙冠完整的离体四环素牙及正常牙各10颗,制备（牙合）面牙本质平面试件,分为四环素牙本质全酸蚀粘接剂组（Single Bond 2,实验1组）和自酸蚀粘接剂组（SE Bond,实验2组）,正常牙本质Single Bond 2组（对照1组）和正常牙本质SE Bond组（对照2组）,每组分别为5颗牙,35个试件.通过测试比较4组牙本质试件的粘接强度及树脂转化率.结果 实验1组的微拉伸强度[（16.17±3.16） MPa]及树脂转化率[（55±6）％]均显著低于实验2组[微拉伸强度：（25.82±2.62） MPa,树脂转化率：（66±3）％]（P＜0.05）,也显著低于两个对照组[微拉伸强度及树脂转化率分别为对照1组：（29.13±2.44） MPa、（64±5）％;对照2组：（24.29±2.83） MPa、（65±4）％],差异均有统计学意义（P＜0.05）.结论 自酸蚀粘接系统对四环素牙本质的粘接效果强于全酸蚀粘接系统.
Objective To investigate and compare the bonding properties of Single Bond 2 and SE Bond to tetracycline stained dentin in vitro.Methods Ten extracted tetracycline stained human teeth and ten extracted normal human teeth were collected and the occlusal dentin surfaces of all extracted teeth were exposed.The tetracycline stained teeth and normal teeth were divided into two groups, respectively and randomly, based on the adhesives applied.Total-etch adhesive（Single Bond 2） and self-etch adhesive（SE Bond） were used.After application of the adhesives to the dentin surfaces, composite crowns were built up.After 24 h water storage, the teeth were sectioned longitudinally into sticks（0.9 mm＆#215;0.9 mm bonding area） for micro tensile testing or micro Raman spectroscopy detection.Bonding strength（μTBS） and resin conversion rate were analyzed using one-way ANOVA.Results The tetracycline Single Bond 2 group presented lower bonding strength[（16.17±3.16） MPa] than the tetracycline SE Bond group[（25.82± 2.62） MPa], and also demonstrated lower bonding strength than the normal Single Bond 2 group[（29.13± 2.44） MPa] and the normal SE Bond group[（24.29±2.83） MPa]（P〈0.05）, while there was no statistical differences among the other three groups（P〉0.05）.The resin conversion rate of tetracycline Single Bond 2 group[（55±6）%] was significantly lower than the tetracycline SE Bond group[（66±3）%]（P〈0.05） and also lower than the normal Single Bond 2 group[（64±5）%] and the normal SE Bond group[（65±4）%]（P〈0.05）.No statistically significant differences were observed among the other three groups（P〉0.05）.Conclusions The bonding strength of total-etch adhesive system to the tetracycline stained dentin was significantly lower than that to the normal dentin.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2016年第1期42-45,共4页
Chinese Journal of Stomatology
基金
国家自然科学基金（81400508）
高等学校博士学科点专项科研基金（20130181120125）
关键词
四环素牙本质
牙本质粘接剂
微拉伸强度
树脂转化率
Tetracycline stained dentin
Dentin-bonding agents
Micro-tensile bond strength
Resin conversion rate
