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首页> 外文期刊>The Journal of Prosthetic Dentistry >Effect of an adhesive resin luting agent on the dowel-head retention of three different core materials.
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Effect of an adhesive resin luting agent on the dowel-head retention of three different core materials.

机译：粘合树脂浸润剂对三种不同芯材的销钉头保持力的影响。

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STATEMENT OF PROBLEM: A dowel-and-core restoration may fail due to failure at either the dowel-tooth or dowel head-core material interface. Long-term clinical success of a dowel-and-core restoration depends on retention of both the dowel to the tooth and the dowel head to the core material. Thus, strengthening of the dowel head-core interface is important. PURPOSE: This study evaluated the retention between a prefabricated dowel and 3 different core materials with or without a dual-polymerized adhesive resin luting agent. MATERIAL AND METHODS: Sixty prefabricated dowels (Gold Plated Anchorage Post) were divided into 3 groups (n=20) consisting of 1 of 3 core materials, amalgam (Standalloy F), light-polymerized resin composite (Clearfil Ray), or glass ionomer (Chelon-Silver). Each core group was divided into 2 subgroups (n=10), and a dual-polymerized adhesive resin luting agent (Panavia F) was applied to the dowel heads of 1 of these subgroups before application of the core material. The manufacturing procedure was standardized by using a plastic index (4.5-mm internal diameter and 5-mm height) and a custom-made dowel holder, which held the dowel head. Prepared specimens were stored in water at room temperature for 3 months and then loaded to fracture in a universal testing machine with a crosshead speed of 0.05 mm/min until failure. Bond strengths were recorded (MPa). Data were analyzed with 2-way analysis of variance (ANOVA) in a 2 x 3 factorial randomized design (alpha=.05). Afterward, core material differences were computed with 1-way ANOVA for both of the bonded and nonbonded groups. Post hoc multiple comparisons were made with the Dunnett C multiple range test. RESULTS: Dowel-head retention values (MPa) of the tested core materials (mean +/- SD) from the highest to the lowest were as follows: bonded amalgam core, 296.1 +/- 108; bonded composite core, 284.3 +/- 38.3; nonbonded composite core, 177.0 +/- 53.7; nonbonded amalgam core, 128.5 +/- 35.0; bonded glass-ionomer core (GIC), 128.0 +/- 24.5; nonbonded GIC, 61.8 +/- 13.3. Two-way ANOVA revealed significant differences between the core material groups and between the bonded and nonbonded groups (P <.001). The interaction between the core material and bond variables was also significant (P =.018). One-way ANOVA revealed statistically significant differences between the bonded (P <.001) and also between the nonbonded core material groups (P <.001). Post hoc multiple comparisons showed that the dowel-head retention of the GIC was significantly weaker than the post-head retention for amalgam and resin composite, whether bonded or not. CONCLUSION: Within the limitations of this study, the adhesive resin luting agent tested appeared to have a significant strengthening effect on the dowel-head retention of the core materials.
机译：问题陈述：销钉和芯子的修复可能由于销钉齿或销钉头-芯材料界面的故障而失败。销钉和钉芯修复的长期临床成功取决于钉销在牙齿上的固定以及钉头在芯材上的固定。因此，加强销钉头-芯界面很重要。目的：这项研究评估了预制木钉与3种不同芯材之间的保持力（有无双胶黏结剂）。材料与方法：将60个预制木钉（镀金锚固柱）分为3组（n = 20），由3种芯材中的1种组成：汞齐（Standalloy F），轻聚合树脂复合材料（Clearfil Ray）或玻璃离聚物（Chelon-Silver）。每个芯组被分成两个亚组（n ＝ 10），并且在施加芯材料之前，将双聚合粘合剂树脂浸润剂（Panavia F）施加到这些亚组中的一个的销钉头上。通过使用塑性指数（内径为4.5毫米，高度为5毫米）和定制的定位销来固定定位头，从而标准化了制造程序。将准备好的标本在室温下的水中储存3个月，然后以0.05 mm / min的十字头速度在万能试验机中加载至断裂，直到失效。记录粘结强度（MPa）。在2 x 3阶乘随机设计（alpha = .05）中通过2方差分析（ANOVA）分析数据。然后，用键合和非键合基团的1向ANOVA计算核心材料差异。使用Dunnett C多重范围测试进行事后多重比较。结果：被测芯材的钉头固位值（MPa）（从最高到最低）如下：粘结汞齐芯，296.1 +/- 108;粘结复合芯，284.3 +/- 38.3;非粘结复合芯，177.0 +/- 53.7;非粘结汞合金芯，128.5 +/- 35.0;键合玻璃离聚物核（GIC），128.0 +/- 24.5;非粘结GIC，61.8 +/- 13.3双向方差分析显示核心材料组之间以及键合组和非键合组之间存在显着差异（P <.001）。核心材料和键变量之间的相互作用也很显着（P = .018）。单向方差分析显示，键合之间（P <.001）和非键合核心材料组之间（P <.001）在统计学上都有显着差异。事后的多重比较表明，无论是否粘合，GIC的销钉头保持力均显着弱于汞齐和树脂复合材料的钉头保持力。结论：在本研究的范围内，所测试的粘合树脂浸润剂似乎对芯材的定位销保持力具有显着的增强作用。

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