口腔材料器械杂志
口腔材料器械雜誌
구강재료기계잡지
CHINESE JOURNAL OF DENTAL MATERIALS AND DEVICES
2015年
1期
5-9
,共5页
抗坏血酸钠%表面活化剂%过氧化脲外漂白%复合树脂%微渗漏
抗壞血痠鈉%錶麵活化劑%過氧化脲外漂白%複閤樹脂%微滲漏
항배혈산납%표면활화제%과양화뇨외표백%복합수지%미삼루
Sodium ascorbate%Surfactan (0.2％ Tween)%External tooth bleaching with carbamide peroxide%Composite resin%Microleakage
目的观察10%抗坏血酸钠与含表面活化剂（Tween，0.2%）的10%抗坏血酸钠对经10%过氧化脲外漂白后复合树脂充填体微渗漏的影响。方法选取牙体完整健康的人离体前磨牙50颗，随机分为5组，第1组不漂白直接树脂充填，第2组用10%过氧化脲漂白后立即树脂充填，第3组漂白后将牙齿浸泡在人工唾液中3周再进行树脂充填，第4组漂白后先用10%抗坏血酸钠处理窝洞后再充填树脂，第5组漂白后先用含0.2%Tween的10%抗坏血酸钠处理窝洞后再进行树脂充填。然后，将5组样本进行2000个周期的冷热循环，2%亚甲基蓝染色24h，体视显微镜下观察剖面充填体的微渗漏情况。结果第1组微渗漏值最低，第2组微渗漏值最高，第3、4组微渗漏值显著高于第1组但与第2组无显著性差异（P>0.05）；第5组渗漏值较第2组及第4组显著下降（P<0.05）。结论10%过氧化脲外漂白致复合树脂充填体边缘微渗漏明显增加，含0.2%Tween的10%抗坏血酸钠处理窝洞可以有效减少该微渗漏的增加，延迟充填和单纯使用抗坏血酸钠均不能有效减少微渗漏。
目的觀察10%抗壞血痠鈉與含錶麵活化劑（Tween，0.2%）的10%抗壞血痠鈉對經10%過氧化脲外漂白後複閤樹脂充填體微滲漏的影響。方法選取牙體完整健康的人離體前磨牙50顆，隨機分為5組，第1組不漂白直接樹脂充填，第2組用10%過氧化脲漂白後立即樹脂充填，第3組漂白後將牙齒浸泡在人工唾液中3週再進行樹脂充填，第4組漂白後先用10%抗壞血痠鈉處理窩洞後再充填樹脂，第5組漂白後先用含0.2%Tween的10%抗壞血痠鈉處理窩洞後再進行樹脂充填。然後，將5組樣本進行2000箇週期的冷熱循環，2%亞甲基藍染色24h，體視顯微鏡下觀察剖麵充填體的微滲漏情況。結果第1組微滲漏值最低，第2組微滲漏值最高，第3、4組微滲漏值顯著高于第1組但與第2組無顯著性差異（P>0.05）；第5組滲漏值較第2組及第4組顯著下降（P<0.05）。結論10%過氧化脲外漂白緻複閤樹脂充填體邊緣微滲漏明顯增加，含0.2%Tween的10%抗壞血痠鈉處理窩洞可以有效減少該微滲漏的增加，延遲充填和單純使用抗壞血痠鈉均不能有效減少微滲漏。
목적관찰10%항배혈산납여함표면활화제（Tween，0.2%）적10%항배혈산납대경10%과양화뇨외표백후복합수지충전체미삼루적영향。방법선취아체완정건강적인리체전마아50과，수궤분위5조，제1조불표백직접수지충전，제2조용10%과양화뇨표백후립즉수지충전，제3조표백후장아치침포재인공타액중3주재진행수지충전，제4조표백후선용10%항배혈산납처리와동후재충전수지，제5조표백후선용함0.2%Tween적10%항배혈산납처리와동후재진행수지충전。연후，장5조양본진행2000개주기적랭열순배，2%아갑기람염색24h，체시현미경하관찰부면충전체적미삼루정황。결과제1조미삼루치최저，제2조미삼루치최고，제3、4조미삼루치현저고우제1조단여제2조무현저성차이（P>0.05）；제5조삼루치교제2조급제4조현저하강（P<0.05）。결론10%과양화뇨외표백치복합수지충전체변연미삼루명현증가，함0.2%Tween적10%항배혈산납처리와동가이유효감소해미삼루적증가，연지충전화단순사용항배혈산납균불능유효감소미삼루。
Objective To investigate the effects of 10%sodium ascorbate, 10%sodium ascorbate com-bined with a surfactan(Tween,0.2%) on the microleakage of composite resin restorations after external tooth bleaching with 10% carbamide peroxide. Methods Fifty extracted human premolars, intact and health, were randomly divided into five groups:group 1, direct composite resin filling without bleaching;group 2, composite resin filling immediately after bleaching with 10%carbamide peroxide;group 3, immersed in artificial saliva for three weeks after bleaching, then filled by composite resin;group 4, cavity treated with 10%sodium ascorbate after bleaching and then filled by composite resin;group 5, cavity treated with 10%sodium ascorbate combined with 0.2%Tween after bleaching and then filled by composite resin. After 2000 thermal cycles, teeth were immersed in 2%methylene blue for 24 hours, then the microleakage at resin/deatin interface was observed under stereomicro-scope. Results Group 1 displayed the least amount of microleakage, while group 2 showed the greatest amount of microleakage, group 3 and group 4 behaved similarly to group 2, having great amount of microleakage, show-ing no significant difference (P>0.05);the microleakage of group 5 decreased significantly (P<0.05) compared to group 2 and group 4. Conclusion The microleakage increased significantly after external bleaching with 10%carbamide peroxide, and decreased when cavities treated with 10%sodium ascorbate combined with 0.2%Tween. However, both delay filling and treated with sodium ascorbate could not effectiely decrease the microleakage.
