三种自粘接树脂水门汀抗压强度的对比测定
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摘要
目的:对比测定三种临床常用的自粘接树脂水门汀的抗压强度。方法:选用SmartCem2、Unicem、MaxcemElite 3种自粘接树脂水门汀,分别制作10个抗压强度试件,每种树脂水门汀试件分2组,每组5个样本,其中1组37℃水浴24h,另外一组试件37℃水浴30d,万能材料试验机测试其抗压强度值,采用SPSS 13.0软件进行统计分析。结果:①水浴24h组:SmartCem2、Unicem、MaxcemElite的抗压强度分别为280.14±16.40MPa、198.84±19.04MPa、346.11±22.17MPa,由高到低排序为MaxcemElite>SmartCem2>Unicem,组间两两比较均有统计学差异,P<0.05;②水浴30d组:SmartCem2的抗压强度高于Unicem和MaxcemElite,P<0.05,而Unicem和MaxcemElite组间比较无显著性差异,P>0.05;③水浴30d后,SmartCem2的抗压强度值较水浴24h时明显提高,其它两种树脂水门汀抗压强度均降低。结论:与Unicem和MaxcemElite相比,SmartCem2具有较高的抗压强度,并且固化30d较24h的抗压强度值明显升高。
Objective: To study the compressive strength of three kinds of self-adhesive resin cements. Methods: Ten specimens were made of three self-adhesive resin cements(SmartCem2, Unicem, MaxcemElite) respectively. Each kind of self-adhesive resin cement was divided into two subgroups with 5 specimens. Specimens in one subgroup were stored in water 37℃ for 24h, and specimens in the other group were stored in water 37℃ for 30d, followed by compressive strength testing with universal testing machine. The data were analyzed with SPSS 13.0 software. Results: In the 24h group, the compressive strength of SmartCem2, Unicem, MaxcemElite were 280.14±16.40MPa、198.84±19.04MPa、346.11±22.17MPa,respectively. The range from high to low was MaxcemElite>SmartCem2>Unicem. The comparisons of the compressive strength between any pairwise groups had statistically significant difference, P <0.05. In the 30d group, the compressive strength of SmartCem2 was higher than that of MaxcemElite or Unicem, P <0.05. There was no significant difference between MaxcemElite and Unicem, P>0.05. The compressive strength value of SmartCem2 increased significantly after storing in water for 30d, whereas MaxcemElite and Unicem decreased. Conclusion: Compared with MaxcemElite and Unicem, SmartCem2 was proved to obtain best compressive strength, and have a higher value of compressive strength after curing for 30d than that of 24h.
Objective: To study the compressive strength of three kinds of self-adhesive resin cements. Methods: Ten specimens were made of three self-adhesive resin cements(SmartCem2, Unicem, MaxcemElite) respectively. Each kind of self-adhesive resin cement was divided into two subgroups with 5 specimens. Specimens in one subgroup were stored in water 37℃ for 24h, and specimens in the other group were stored in water 37℃ for 30d, followed by compressive strength testing with universal testing machine. The data were analyzed with SPSS 13.0 software. Results: In the 24h group, the compressive strength of SmartCem2, Unicem, MaxcemElite were 280.14±16.40MPa、198.84±19.04MPa、346.11±22.17MPa,respectively. The range from high to low was MaxcemElite>SmartCem2>Unicem. The comparisons of the compressive strength between any pairwise groups had statistically significant difference, P <0.05. In the 30d group, the compressive strength of SmartCem2 was higher than that of MaxcemElite or Unicem, P <0.05. There was no significant difference between MaxcemElite and Unicem, P>0.05. The compressive strength value of SmartCem2 increased significantly after storing in water for 30d, whereas MaxcemElite and Unicem decreased. Conclusion: Compared with MaxcemElite and Unicem, SmartCem2 was proved to obtain best compressive strength, and have a higher value of compressive strength after curing for 30d than that of 24h.
引文
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[2]孙建伟.自粘接型树脂水门汀Clearfil SA Luting粘接性能的研究[D].西安:第四军医大学博士学位论文,2010
[3]周菊妹.5种复合树脂不同水浴时间的压缩强度体外实验评价[J].口腔医学,2011,31(9):544-546
[4]Wang L,D'Alpino PH,Lopes LG,et al.Mach anical properties ofdentalrestorativematerials:relativecontributionof laboratory tests[J].J Appl Oral Sci,2003,11(3):162-167
[5]Ch ristensen GJ.Conservative posterior tooth restorations[J].J Esth et Dent,1993,5(4):154-160
[6]Ch ang JC,H urst TL,H art DA,et al.4-META use in dentistry:a literature review[J].Th e Journal of prosth etic dentistry,2002,87(2):216-224
[7]Ausiello P,Apicella A,Ddavidson CL.Th e effects of adh esive layer properties on stress distribution in composite restortions-3D finite element analysis[J].Dent Mater,2002,18(3):295-303
[8]陈治清.口腔材料学[M].4版.北京:人民卫生出版社,2008:71
[9]Malh otra N,Mala K.Ligh t-curing considerations for resin-based composite materials:a review.Part II[J].Compend Contin EducDent,2010,31(8):584-588
[10]Nadamura T,Wakabayash i K,Kinuta,et al.Mech anical properties of new self-adh esive resin-based cement[J].Journal of prosth odonticresearch,2010,54(2):59-64.
[11]钟玉修,倪龙兴,姜永,等.纳米金刚石填料对复合树脂耐磨性能及挠曲强度的影响[J].口腔医学,2005,25(3):34-35
[12]Steph en CB,Jeffrey Y,Th ompson J,et al.Porosity evaluation and pore size distribution of anoveldirectly placed ceramic restorativematerial[J].Dental Materials,2004,20(10):987-995
[13]黄姗,唐亮.纳米复合树脂的研究现状[J].广东牙病防治,2009,17(10):509-511
[14]Czasch P,Ilie N.In vitro comparison of mech anical properties and degree of cure of a self-adh esive and four novel flow able composites[J].J Adh es Dent,2013 Jun;15(2):229-36