冷热循环后金属底涂剂对黏结树脂水门汀与贵金属陶瓷合金黏结性能的影响。

Effects of metal primers on the bonding of an adhesive resin cement to noble metal ceramic alloys after thermal cycling.

机构信息

Fixed Prosthetic Clinic, Kagoshima University Medical and Dental Hospital, Kagoshima, Japan.

出版信息

J Prosthet Dent. 2011 Dec;106(6):378-85. doi: 10.1016/S0022-3913(11)60152-2.

DOI:10.1016/S0022-3913(11)60152-2

PMID:22133395

Abstract

STATEMENT OF PROBLEM

Although the effectiveness of primers for resin bonding to noble alloys has been demonstrated, no effective clinical technique for bonding to noble metal ceramic alloys has been established.

PURPOSE

The purpose of this study was to evaluate the effects of metal primers on the shear bond strength of an adhesive resin to noble metal ceramic alloys after thermal cycling.

MATERIAL AND METHODS

Sixty-three disk-shaped specimens (10 × 2.5 mm) were cast from high-gold-content alloys (Super Metal W-85: W85 or IFK88 GR: IFK88), a high-palladium-content alloy (Super Metal N-40: N40), and an Ag-Pd-Cu-Au alloy (Castwell M.C.12: MC12). Smaller-sized disk-shaped specimens (8 × 2.5 mm) were fabricated with MC12. Bonding surfaces were finished with 600-grit SiC-paper and airborne-particle abraded with 50-μm alumina. Pairs of disks were primed (V-Primer: VP; ML Primer: ML; or Metaltite: MT) and bonded with an adhesive resin (Super-Bond C&B). The bond strengths were determined before and after 20,000 and 50,000 thermal cycles (n=7). Data were analyzed by using a 3-way ANOVA and the Bonferroni test (α=.05). Failure modes were determined by optical microscope and SEM observation.

RESULTS

Bond strengths to high-gold-content alloys with VP and MT significantly decreased after the thermal cycling (P<.001). Bond strengths to W85 (35.27 ±4.25 MPa) and IFK88 (33.57 ±3.56 MPa) after 50,000 thermal cycles obtained by ML were the highest (P<.001), and these groups showed combination failures. Bond strengths to N40 significantly decreased after 50,000 thermal cycles (P<.001), regardless of primers.

CONCLUSIONS

Shear bond strengths (SBS) to high-gold-content alloys were not degraded up to 50,000 thermal cycles when primed with ML. None of the primers evaluated was effective for high-palladium-content alloy.

摘要

问题陈述

虽然已经证明了底漆对贵金属合金的树脂粘结有效性，但尚未建立用于粘结贵金属陶瓷合金的有效临床技术。

目的

本研究的目的是评估金属底漆对热循环后粘结树脂与贵金属陶瓷合金的剪切粘结强度的影响。

材料与方法

从高金含量合金（Super Metal W-85：W85 或 IFK88 GR：IFK88）、高钯含量合金（Super Metal N-40：N40）和 Ag-Pd-Cu-Au 合金（Castwell M.C.12：MC12）铸造 63 个圆盘形试件（10×2.5mm）。用 MC12 制造更小尺寸的圆盘形试件（8×2.5mm）。粘结面用 600 目 SiC 砂纸打磨，用 50μm 氧化铝喷砂处理。将两个圆盘分别用底漆（V-Primer：VP；ML Primer：ML；或 Metaltite：MT）预处理，然后用粘结树脂（Super-Bond C&B）粘结。在 20,000 和 50,000 次热循环前后测定粘结强度（n=7）。数据采用三因素方差分析和 Bonferroni 检验（α=.05）进行分析。通过光学显微镜和 SEM 观察确定失效模式。

结果

VP 和 MT 预处理后，高金含量合金的粘结强度在热循环后显著降低（P<.001）。用 ML 预处理后，W85（35.27±4.25MPa）和 IFK88（33.57±3.56MPa）的 50,000 次热循环后的粘结强度最高（P<.001），这些组显示为组合失效。N40 的粘结强度在 50,000 次热循环后显著降低（P<.001），与底漆无关。