树脂印章法与分层充填技术充填后边缘微渗漏的研究
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摘要
目的比较树脂印章法美学修复充填与树脂分层充填术后边缘微渗漏的情况。方法选取符合纳入标准的40颗磨牙,于牙合面统一制备深达釉牙本质界以下约1 mm的Ⅰ类洞。随机分成A组20例和B组20例,A组采用印章充填技术进行后牙牙合面美学树脂充填,B组采用树脂分层充填并雕刻牙合面形态。两组充填样本经冷热循环实验后,分别置于2%亚甲基蓝溶液浸泡24 h,干燥后沿样本充填体正中颊舌向剖开,于体视显微镜下观察样本染料渗入情况,评价微渗漏程度,并进行统计学分析。结果染料渗入结果表明:A组(印章充填组)与B组(分层充填组)微渗漏程度差异具有统计学意义(P<0.05),印章组微渗漏低于分层充填组。结论印章法树脂充填术在保证相对美观的同时,可达到更好的边缘封闭,具有临床实用性。
Objective To compare the microleakage of composite resin restorations using an occlusal surface impression technology and a layered filling technology. Methods 40 molar teeth that met the inclusion criteria were selected. Class-Ⅰcavities that went 1 mm deep into the enamel dentinal junction were prepared on 40 freshly extracted molar teeth. The teeth were randomly divided into groups A and B, each with 20 teeth. Group A was restored with occlusal surface impression technology. Group B was restored with the traditional way. After a thermocycling regimen of 5 000 cycles between 5 ℃ and 55 ℃, both groups were isolated, immersed in 2% methylene blue solution for 24 h at 37 ℃ and sectioned longitudinally in a buccolingual direction. Then the dye infiltration was observed under the microscope. The sections were evaluated for values of microleakage with a stereomicroscope. Results There was significant difference in the dye penetration degree between two groups(P<0.05). Higher degree of microleakage was observed in group B compared to group A. Conclusion The occlusal surface impression technology is better than the traditional layered filling technology in the microleakage of composite resin restoration, which ensures the relative aesthetics and simultaneously reaches a better edge sealing, and has clinical utility.
Objective To compare the microleakage of composite resin restorations using an occlusal surface impression technology and a layered filling technology. Methods 40 molar teeth that met the inclusion criteria were selected. Class-Ⅰcavities that went 1 mm deep into the enamel dentinal junction were prepared on 40 freshly extracted molar teeth. The teeth were randomly divided into groups A and B, each with 20 teeth. Group A was restored with occlusal surface impression technology. Group B was restored with the traditional way. After a thermocycling regimen of 5 000 cycles between 5 ℃ and 55 ℃, both groups were isolated, immersed in 2% methylene blue solution for 24 h at 37 ℃ and sectioned longitudinally in a buccolingual direction. Then the dye infiltration was observed under the microscope. The sections were evaluated for values of microleakage with a stereomicroscope. Results There was significant difference in the dye penetration degree between two groups(P<0.05). Higher degree of microleakage was observed in group B compared to group A. Conclusion The occlusal surface impression technology is better than the traditional layered filling technology in the microleakage of composite resin restoration, which ensures the relative aesthetics and simultaneously reaches a better edge sealing, and has clinical utility.
引文
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[19] Fróes-Salgado NR,Silva LM,Kawano Y,et al.Composite pre-heating:Effects on marginal adaptation,degree of conversion and mechanical properties[J].Dent Mater,2010,26(9):908-914.
[20] Didron PP,Chrzanowski W,Ellakwa A.Effect of temperatures on polymerization stress and microleakage of class V composite restorations[J].Open J Comp Mate,2013,3(4):107-112.
[2] Klinke T,Daboul A,Turek A,et al.Clinical performance during 48 months of two current glass ionomer restorative systems with coatings:a randomized clinical trial in the field[J].Trials,2016,17(1):239.
[3] 姜东锋,顾海佳,娄亮,等.纳米树脂美学修复前牙缺损牙的临床观[J].实用口腔医学,2014,30(6):861-863.
[4] 朱明霞,朱雅男.78例上颌锥形侧切牙的树脂美学修复临床[J].口腔医学,2014,30(8):493-494.
[5] 万英明,朱辛奕,许宁.复合树脂美学修复技术和常规技术在前牙美学修复中的疗效对比分析[J].中外医疗,2015,2:44-45.
[6] 王红梅,蔡兴伟,郝作琦,等.光固化树脂在前牙美学修复中的应用[J].中国美容医学,2017,26(7):100.
[7] Giachetti L,Scaminaci RD,Bambi C,et al.A review of polymerization shrinkage stress:current techniques for posterior direct resin restorations[J].J Contemp Dent Pract,2006,7(4):79-88.
[8] 潘悦萍,夏文薇.窝洞预备对树脂微渗漏的影响[J].国际口腔医学杂志,2008,35(增刊):102-105.
[9] 瞿灵丽,徐艳,李璐.不同酸蚀条件下SonicFillTM超声树脂修复后牙微渗漏的体外研究[J].口腔医学,2017,37(12):1057-1060.
[10] 王琳,黄明晖.不同充填方法对继发龋预防作用的研究进展[J].中国医药指南,2017,15(20):25-26.
[11] 苏伟,罗美界.不同材料修复牙体楔状缺损的疗效比较[J].广西医学,2014,36(4):519-520.
[12] 李丽惠,谭永宁.加强型流动树脂修复窝沟龋的临床观察[J].牙体牙髓牙周杂志,2014,24(2):109-111.
[13] 刘聪,曲晓复.3种充填材料应用于牙颈部非龋性缺损的边缘封闭性研究[J].口腔医学,2012,32(6):354-356.
[14] 马红,章非敏.牙科复合树脂生物学性能的临床和实验室研究[J].国际口腔医学杂志,2008,35(2):210-212.
[15] 赵信义,李石保.复合树脂的分层充填固化技术[J].中华口腔医学杂志,2008,43(2):73-75.
[16] Tiba A,Charlton DG,Vanderwalle KS,et al.Volumetric polymerization shrinkage of resin composites under simulated intraoral temperature and humidity conditions.[J].Oper Dent,2005,30(6):696.
[17] Dietschi D.Layering concepts in anterior composite restorations.[J].J Adhes Dent,2001,3(1):71.
[18] 赵奇,吴艳.光固化树脂分层充填技术的应用现状[J].华西口腔医学杂志,2012,30(4):335-337.
[19] Fróes-Salgado NR,Silva LM,Kawano Y,et al.Composite pre-heating:Effects on marginal adaptation,degree of conversion and mechanical properties[J].Dent Mater,2010,26(9):908-914.
[20] Didron PP,Chrzanowski W,Ellakwa A.Effect of temperatures on polymerization stress and microleakage of class V composite restorations[J].Open J Comp Mate,2013,3(4):107-112.
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