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首页> 外文期刊>The Journal of Prosthetic Dentistry >Tensile bond strength of an adhesive resin cement to different alloys having various surface treatments.
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Tensile bond strength of an adhesive resin cement to different alloys having various surface treatments.

机译：粘合树脂胶粘剂对具有各种表面处理的不同合金的拉伸粘合强度。

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STATEMENT OF PROBLEM: The ability of a resin cement to bond to a restorative alloy is critical for maximal crown retention to nonideal preparations. Surface treatment and metal type may have an important role in optimizing resin-to-metal strength. PURPOSE: The purpose of this study was to examine the effect of surface pretreatment on the tensile strength of base and noble metals bonded using a conventional resin cement. MATERIAL AND METHODS: Cylindrical plastic rods (9.5 mm in diameter), cast in base (Rexillium NBF) or noble metal (IPS d.SIGN 53), were divided into rods 10 mm in length (n=10-12). Specimens were heated in a porcelain furnace to create an oxide layer. Test specimens were further subjected to airborne-particle abrasion (50-microm Al(2)O(3) particles) alone or with the application of a metal primer (Alloy Primer). Similarly treated rod ends were joined using resin cement (RelyX ARC), thermocycled (x500, 5 degrees -55 degrees C) and stored (24 hours, 37 degrees C) before debonding using a universal testing machine. Debond strength and failure site were recorded. Rank-based ANOVA for unbalanced designs was used to test for significant interaction (alpha=.050). Each pair of treatments was compared separately for each metal (Bonferroni-adjusted significance level of .0083, overall error rate for comparisons, .05). The 2 metals were compared separately for each of the 3 treatments using an adjusted significance level of .017, maintaining an overall error rate of .05. A multinomial logit model was used to describe the effect of metal type and surface pretreatment on failure site location (alpha=.05). RESULTS: Interaction between metal type and surface pretreatment was significant for stress values (P=.019). Metal type did not significantly affect tensile bond strength for any of the compared surface pretreatments. Metal primer significantly improved tensile bond strength for each metal type. Most failures tended to occur as either adhesive or mixed in nature. CONCLUSIONS: Metal primer application significantly enhanced tensile bond strength to base and noble metal. No significant differences in tensile strength were found between alloys. Differences in failure site incidence were found to be related to metal type and surface pretreatment.
机译：问题陈述：树脂胶粘剂与修复性合金结合的能力对于最大程度地保留非理想制剂的牙冠至关重要。表面处理和金属类型可能对优化树脂到金属的强度起重要作用。目的：本研究的目的是研究表面预处理对使用常规树脂胶粘剂粘结的贱金属和贵金属的抗张强度的影响。材料和方法：将圆柱形塑料棒（直径9.5毫米）浇铸在底座（Rexillium NBF）或贵金属（IPS d.SIGN 53）中，将其分成10毫米长（n = 10-12）。在瓷炉中加热样品以产生氧化层。单独或通过金属底漆（合金底漆）对试样进行空气颗粒磨损（50微米Al（2）O（3）颗粒）。使用树脂胶泥（RelyX ARC）将经过类似处理的杆端连接起来，热循环（x500，5摄氏度-55摄氏度），并在使用通用测试机脱粘之前进行存储（24小时，37摄氏度）。记录剥离强度和破坏部位。用于不平衡设计的基于等级的ANOVA用于测试显着的交互作用（alpha = .050）。对每种金属分别对每对处理进行了比较（Bonferroni调整后的显着性水平为0.0083，比较的总错误率为0.05）。使用调整后的.017显着性水平将3种处理方法中的每一种分别比较2种金属，以保持0.05的总错误率。使用多项式logit模型描述金属类型和表面预处理对失效部位的影响（alpha = .05）。结果：金属类型和表面预处理之间的相互作用对于应力值具有显着意义（P = .019）。对于任何比较的表面预处理，金属类型均不会显着影响拉伸粘合强度。金属底漆显着提高了每种金属的拉伸粘结强度。多数故障倾向于以粘合剂形式或混合性质发生。结论：金属底漆的应用显着增强了对贱金属和贵金属的拉伸粘合强度。在合金之间没有发现拉伸强度的显着差异。发现失效部位发生率的差异与金属类型和表面预处理有关。

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