脱敏及脱敏后酸蚀对牙本质与氧化锆粘结强度的影响

发布时间：2018-05-26 23:08

本文选题：氧化锆 + 水激光　；参考：《重庆医科大学学报》2014年12期

【摘要】：目的:比较2种脱敏方式及脱敏后酸蚀对氧化锆与牙本质粘结强度的影响,为其临床应用提供实验依据。方法:收集无龋完整的第三磨牙50颗,截去冠端,暴露牙本质,将其随机分成对照组A、实验组B、B1和C、C1(n=10),均浸入1∶3稀释的胎牛血清溶液备用。1 d后取出,A组无处理,B、B1组涂布Gluma脱敏剂,C、C1组用水激光处理。粘结前B1、C1组磷酸酸蚀15 s,其余各组不处理,各标本牙本质粘结底面同等大小氧化锆,并测定其剪切强度,结果采用SPSS 17.0分析。结果:粘结强度:A组(9.626±0.318)MPa,B组(12.577±0.374)MPa,B1组(15.650±0.344)MPa,C组(9.530±0.391)MPa,C1组(12.740±0.310)MPa。除A组与C组比较(P0.05),B组与C1组比较(P0.05),差异没有统计学意义,其余组别两两比较差异皆有统计学意义(P0.05)。结论:Gluma脱敏剂可以增强Rely XTMUnicem与牙本质的粘结强度,水激光或Gluma脱敏的牙本质在通过适当磷酸酸蚀皆可增强与Rely XTMUnicem的粘结强度。
[Abstract]:Objective: to compare two desensitization methods and the effect of desensitized acid etching on the bonding strength between zirconia and dentin in order to provide experimental evidence for its clinical application. Methods: 50 caries-free third molars were collected, the crown was cut off, and the dentin was exposed. They were randomly divided into two groups: control group A, experimental group B _ (1) B _ (1) and C _ (1) C _ (1) N _ (10), immersed in 1:3 diluted fetal bovine serum solution for 1.1d, then treated with Gluma desensitizer (C _ (C _ 1) C _ (1) in group B _ (1) without treatment. The samples were bonded to the same size zirconia on the base of dentin for 15 s, and the shear strength was measured. The results were analyzed by SPSS 17.0. Results: the bond strength of group A was 9.626 卤0.318m MPaI B group (12.577 卤0.374) MPaOB group (15.650 卤0.344m) MPaAU C group (9.530 卤0.391g / ml) and group C (12.740 卤0.310mpa). Except for group A and group C, there was no significant difference between group B and group C1, but there was no significant difference between group A and group C (P 0.05). Conclusion the ratio Gluma desensitizer can enhance the bond strength between Rely XTMUnicem and dentin, and the dentin desensitized by water laser or Gluma can enhance the bond strength with Rely XTMUnicem through proper phosphate etching.
【作者单位】：重庆医科大学附属口腔医院修复科、口腔疾病与生物医学重庆市重点实验室;
【分类号】：R783.3

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