Aim To evaluate the interactive effects of different self- adhesive resin cements and tribochemical treatment on bond strength to zirconia. Methodology The following self-adhesive resin cements for bonding two zirconi...Aim To evaluate the interactive effects of different self- adhesive resin cements and tribochemical treatment on bond strength to zirconia. Methodology The following self-adhesive resin cements for bonding two zirconia blocks were evaluated: Maxcem (MA), Smartcem (SM), Rely X Unicem Aplicap (UN), Breeze (BR), Biscem (BI), Set (SE), and Clearfil SA luting (CL). The specimens were grouped according to conditioning as follows: Group 1, polishing with 600 grit polishing paper; Group 2, silica coating with 110 μm Al2O3 particles which modified with silica; and, Group 3, tribochemical treatment - silica coating + silanization. Specimens were stored in distilled water at 37℃ for 24 hours before testing shear bond strength. Results Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, B1, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP- containing self-adhesive resin cement CL had the highest bond strengths to zirconia. Conclusion Applying silica coating and tribochemical treatment improved the bond strength of self-adhesive resin cement to zirconia, especially for CL.展开更多
目的比较玻璃离子水门汀与流动树脂垫底对深龋近髓磨牙充填后的疼痛及术后敏感性。方法120颗深龋近髓磨牙,随机分为对照组,玻璃离子水门汀组和流动树脂组,每组40颗患牙。对照组采用dycal护髓,玻璃离子水门汀组采用dycal护髓和玻璃离子...目的比较玻璃离子水门汀与流动树脂垫底对深龋近髓磨牙充填后的疼痛及术后敏感性。方法120颗深龋近髓磨牙,随机分为对照组,玻璃离子水门汀组和流动树脂组,每组40颗患牙。对照组采用dycal护髓,玻璃离子水门汀组采用dycal护髓和玻璃离子水门汀垫底,流动树脂组采用dycal护髓和流动树脂垫底,酸蚀粘接后,3组上层均加压充填3M ESPE Filtek^(TM)P60复合树脂。分别于修复后1天,1周,1个月,3个月采用疼痛程度标尺(Visual Analog scales,VAS)记录自觉疼痛程度,采用Ryge评价标准记录对压缩空气刺激的敏感性。结果术后1天、1周、1个月和3个月,对照组与两个实验组之间自觉疼痛程度上差异有统计学意义(P<0.05),各观察期两实验组之间自觉疼痛程度差异无统计学意义(P>0.05)。术后1天和1周,3组之间的术后敏感发生率差异无统计学意义(P>0.05),术后1个月和3个月,玻璃离子水门汀组和流动树脂组与对照组之间差异有统计学意义(P<0.05),而玻璃离子组与流动树脂组之间差异没有统计学意义(P>0.05)。结论在深龋近髓磨牙充填中,双垫底治疗可以降低术后疼痛以及敏感的发生,玻璃离子水门汀和流动树脂之间没有本质区别。展开更多
文摘Aim To evaluate the interactive effects of different self- adhesive resin cements and tribochemical treatment on bond strength to zirconia. Methodology The following self-adhesive resin cements for bonding two zirconia blocks were evaluated: Maxcem (MA), Smartcem (SM), Rely X Unicem Aplicap (UN), Breeze (BR), Biscem (BI), Set (SE), and Clearfil SA luting (CL). The specimens were grouped according to conditioning as follows: Group 1, polishing with 600 grit polishing paper; Group 2, silica coating with 110 μm Al2O3 particles which modified with silica; and, Group 3, tribochemical treatment - silica coating + silanization. Specimens were stored in distilled water at 37℃ for 24 hours before testing shear bond strength. Results Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, B1, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP- containing self-adhesive resin cement CL had the highest bond strengths to zirconia. Conclusion Applying silica coating and tribochemical treatment improved the bond strength of self-adhesive resin cement to zirconia, especially for CL.
文摘目的比较玻璃离子水门汀与流动树脂垫底对深龋近髓磨牙充填后的疼痛及术后敏感性。方法120颗深龋近髓磨牙,随机分为对照组,玻璃离子水门汀组和流动树脂组,每组40颗患牙。对照组采用dycal护髓,玻璃离子水门汀组采用dycal护髓和玻璃离子水门汀垫底,流动树脂组采用dycal护髓和流动树脂垫底,酸蚀粘接后,3组上层均加压充填3M ESPE Filtek^(TM)P60复合树脂。分别于修复后1天,1周,1个月,3个月采用疼痛程度标尺(Visual Analog scales,VAS)记录自觉疼痛程度,采用Ryge评价标准记录对压缩空气刺激的敏感性。结果术后1天、1周、1个月和3个月,对照组与两个实验组之间自觉疼痛程度上差异有统计学意义(P<0.05),各观察期两实验组之间自觉疼痛程度差异无统计学意义(P>0.05)。术后1天和1周,3组之间的术后敏感发生率差异无统计学意义(P>0.05),术后1个月和3个月,玻璃离子水门汀组和流动树脂组与对照组之间差异有统计学意义(P<0.05),而玻璃离子组与流动树脂组之间差异没有统计学意义(P>0.05)。结论在深龋近髓磨牙充填中,双垫底治疗可以降低术后疼痛以及敏感的发生,玻璃离子水门汀和流动树脂之间没有本质区别。