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- 2017
疲劳循环对复合树脂微渗漏影响的体外研究
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Abstract:
摘要 目的:通过体外加载实验观察复合树脂边缘微渗漏变化情况,分析洞缘斜面的必要性。方法:将140颗离体牙按是否制备洞缘斜面、不同疲劳循环加载次数及位点随机分为14小组。所有样本采用复合树脂(3M P60)充填,包埋后经不同疲劳循环次数(0、1×105、1.3×106次)或加载位点(颊尖、颊界面、修复体)进行加载试验,检测修复体界面染料渗透深度。结果:1.3×106次组微渗漏大于1×105次及0次组。0次加载时,不同洞缘组间差异不显著;加载1×105次后,牙体受力时洞缘斜面组的微渗漏比无洞缘斜面组小(P<0.05);加载1.3×106次后,洞缘斜面组微渗漏小于无洞缘斜面组(P<0.05)。结论:体外疲劳循环(模拟咀嚼半年)后,洞缘斜面有利于减少复合树脂的微渗漏
| [1] | Sano H, Takatsu T, Ciucchi B, et al. Nanoleakage: leakage within the hybrid layer [J]. Oper Dent, 1995, 20(1)∶18-25 |
| [2] | Martin FE. Adhesive bonding:some clinical considerations[J]. Ann R Australas Coll Dent Surg, 2006,18(1)∶30-35 |
| [3] | 陈治清.复合树脂的性能[M].北京:人民卫生出版社,第4版.口腔材料学∶69-70 |
| [4] | Ameri H, Ghavamnasiri M,Abdoli E.Effects of load cycling on the microleakage of beveled and nonbeveled margins in class V resin-based composite restorations [J]. Contemp Dent Pract, 2010, 11(1)∶25-32 |
| [5] | Bedran-de-Castro AK, Pereira PN, Pimenta LA, et al. Effect of thermal and mechanical load cycling on nanoleakage of Class II restorations [J]. Adhes Dent, 2004, 6(3)∶221-226 |
| [6] | Nothdurft FP, Schmitt T, Rupf S, et al. Influence of fatigue testing and cementation mode on the load-bearing capability of bovine incisors restored with crowns and FRC posts [J]. Dent Mater J, 2011, 30(1)∶109-114 |
| [7] | Yavuz Izet, Atakul Fatma, zer Sahin Semra, et al. The comparison of amount of microleaking for in vitro restorations in permanent teeth of human, dog and cow [J]. Balkan Journal of Stomatology, 2000, 4(2)∶103-106 |
| [8] | 杨苗,阙国鹰.循环加载对不同洞缘设计的Ⅰ类洞充填界面微渗漏的影响.中南大学硕士论文,2012.5 |
| [9] | 吴锦涛,张光东,徐海.不同固化充填方法对Z350纳米树脂微渗漏和压缩强度的影响[J].口腔医学,2010, 30(12)∶736-739 |
| [10] | 陈亚明,周书敏.Ⅰ类洞型设计的力学模型实验及二变量回归分析研究[J].实用口腔医学杂志,2000,20(6)∶674-677 |
| [11] | 郑铁丽.离体牙储存方法对牙本质及牙本质粘接的影响[J].国外医学口腔医学分册,2004,31(3)∶207-208 |
| [12] | 李子夏,包广洁.万能金相显微镜在牙体充填材料微渗漏研究中的应用[J].现代医药卫生,2010,26(16)∶2406-2408 |
| [13] | Davidson CL, Abdalla AI. Effect of occlusal load cycling on the marginal integrity of adhesive Class V restorations [J]. Am J Dent, 1994, 7(2)∶111-114 |
| [14] | Opdam NJ, Roeters JJ, Kuijs R, et al. Necessity of bevels for box only Class II composite restorations [J]. J Prosthet Dent, 1998, 80(3)∶274-279 |
| [15] | Hoelscher DC, Gregory WA, Linger JB, et al. Effect of light source position and bevel placement on facial margin adaptation of resin-based composite restorations [J]. Am J Dent, 2000, 13(4)∶171-175 |
