Influence of prolonged thermal cycling and water storage on the tensile bond strength of composite to NiCr alloy.
Influence of prolonged thermal cycling and water storage on the tensile bond strength of composite to NiCr alloy.
复制标题
长时间热循环和水储存对复合材料与 NiCr 合金拉伸结合强度的影响。
DOI：
10.1016/0109-5641(94)90017-5
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
V. Thompson
中科院分区：
文献类型：
--
作者：
M. Kern;V. Thompson
目的：本研究的目的是评估新型粘接系统(微观机械和化学机械)与无铍镍铬合金(NiCr)的粘结强度和粘结耐久性。方法：将填充了复合材料的有机玻璃管粘接到NiCr合金圆盘上。使用六种不同的粘接系统对24个样品组进行粘接。将8个粘结试件分别放置在37℃等渗人工唾液中1d、30d或150d。此外，分别对30d和150d的试件进行7500或37500个循环的热循环。结果：传统的BiGMA复合材料与喷砂NiCr的粘结强度显著低于化学机械粘结系统，并且在150d的储存时间内持续下降。在喷砂合金上添加硅烷仅导致粘结强度略有增加，但在统计学上没有显著差异。统计上，无论是结合使用二氧化硅涂层和传统的双GMA复合材料，还是结合喷砂和使用磷酸盐单体改性的复合材料，都可以获得显著更高和更持久的镍铬合金结合。在这些体系中，粘结强度受到树脂复合材料的粘结强度的限制。然而，一种新开发的含有相同活性磷酸盐单体的复合材料显示，随着储存时间的延长，粘结强度(粘合强度)在统计上显著下降。显著的是，在实验室测试中，需要在潮湿环境中更长的储存时间来检验粘结系统的耐久性。
Objectives.The purpose of this study was to evaluate the bond strength and bond durability of new adhesive systems (both micromechanical and chemo-mechanical) to a beryllium-free nickel-chromium alloy (NiCr).Methods.Plexiglass tubes filled with composite were bonded to NiCr alloy discs. Groups of 24 samples were bonded using six different bonding systems. Subgroups of eight bonded samples were stored in an isotonic artificial saliva solution (37°C) either for 1 d, 30 d or 150 d. In addition, the 30 and 150 d samples were thermal cycled for 7,500 or 37,500 cycles, respectively.Results.The bond strength of a conventional BisGMA composite to sandblasted NiCr was statistically significantly lower than that of chemo-mechanical bonding systems and decreased continuously during the storage time of 150 d. The additional use of a silane on the sandblasted alloy resulted only in a slight, statistically insignificant increase in bond strength. Statistically significantly higher and more durable bonds to NiCr alloy were achieved either with the combination of silica coating and use of a conventional BisGMA composite or with the combination of sandblasting and the use of a composite modified with a phosphate monomer. In these systems, the bond strengths were limited by the cohesive strength of the resin composites. However, a newly developed composite containing the same active phosphate monomer showed a statistically significant decrease in bond strength (cohesive strength) over storage time.Significance.Longer-term storage times in a wet environment are needed in laboratory tests to examine the durability of bonding systems.
三种粘合剂用于粘连固定局部义齿的拉伸强度。
DOI：
--
发表时间：
1989
期刊：
The International journal of prosthodontics
影响因子：
--
作者：
Diaz-Arnold,AM;Williams,VD;Aquilino,SA
通讯作者：
Aquilino,SA
薄膜厚度对修复粘合剂拉伸粘合强度的影响。
DOI：
10.1016/0022-3913(91)90440-8
发表时间：
1991
期刊：
The Journal of prosthetic dentistry
影响因子：
--
作者：
Diaz-Arnold,AM;Williams,VD;Aquilino,SA
通讯作者：
Aquilino,SA