摘要
目的:用微剪切实验测评Er:YAG激光照射对1步法自酸蚀粘接系统在颈部牙本质的长期粘接效果的影响。方法:30颗离体磨牙切割获60片颈部牙本质切片,随机分为对照组(#600沙砾磨砂纸打磨)和激光组(Er:YAG激光照射)。每切片粘接8个树脂柱(Tri-S Bond),24h、7d、6月、1年后测微剪切粘接强度,one-way ANOVA和t-test统计分析结果(P=0.05)。走查扫描电镜观察粘接破折面。结果:Er:YAG激光照射牙本质表面呈鳞片状,激光组在6个月和1年后的粘接强度显著下降,低于该组24h和7d后,也低于对照组的结果。结论:Er:YAG激光照射影响了Tri-S Bond在颈部牙本质的长期粘接强度。
Objective：To investigate the effects of Er：YAG laser irradiation on micro-shear bond strength of an all-in--one bonding system for cervical dentin over a period of 1year.Methods：Sixty cervical dentin slices obtained from extracted human third molars were prepared.After surface treatments by Er：YAG laser irradiation or600-grit silicon paper polishing,the micro-shear bond strength of Tri-S Bond to cervical dentin were tested after24hours（24H）,7days（7D）,6months（6M）and 1year（1Y）.The results were statistically analyzed using oneway ANOVA and t-test.Results：It was showed that bond strengths of lased dentin after 6Mand 1Ywere significantly lower than those of other groups.Conclusion：Er：YAG laser irradiation influenced the bond strength of TriS Bond to cervical dentin after 6months and 1year.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2016年第5期490-493,共4页
Journal of Oral Science Research
基金
深圳市战略新兴产业发展专项资金资助(编号:JCYJ20130402151227187)(编号:JCYJ20150525092941015)
