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首页> 外文期刊>Journal of Pharmacy and Bioallied Sciences >Fracture Resistance of Titanium, Chrome–Cobalt, and Gold Alloy as Post and Core Materials: A Comparative Evaluation
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Fracture Resistance of Titanium, Chrome–Cobalt, and Gold Alloy as Post and Core Materials: A Comparative Evaluation

机译：钛，铬 - 钴和金合金作为柱和核心材料的裂缝抗性：比较评价

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This study aimed to comparatively evaluate the fracture resistance of different metallic post and core materials.Materials and Methods:Twenty-four maxillary–central incisors were selected, standardized, and segregated into three groups (GP I–III) (n = 8) based on the type of alloy used for post and core preparation. GP I (gold alloy [Au]), GP II (chrome–cobalt alloy [Co–Cr]), and GP III (titanium alloy [Ti]) were comparatively evaluated for use as post and core materials. The teeth were endodontically treated and tooth preparation for post core was done.Metal post and cores were fabricated using indirect wax pattern and luted. Teeth were mounted on resin bases, fracture testing was done, and type of fractures were analyzed.Results:Mesiodistal type of fracture was the most common among experimental groups with a percentage incidence of 54.20%. The comminuted type of fracture was the next most common with a percentage incidence of 29.2%. The incidence of buccolingual, transverse, and other type of fracture was not common and had a percentage incidence of 29.2%, 4.2%, 8.3% and 4.2% respectively. Group II had the highest fracture resistance with a mean value of 742.89N. Group III and Group I had mean values of 482.33 and 361.1123N. Statistically significant difference between experimental groups (I and II) and (II and III) was observed in load values of root fracture (P < 0.05).Conclusion:On the basis of the protocols used and limitations of this study, among metallic post and core materials tested, GP II had the highest fracture resistance values. Further evaluation of these different post and core systems, new alloy formulations designed specifically for use as post and core materials, and assessment in a clinical setting is recommended.
机译：本研究旨在相对评价不同金属柱和核心材料的裂缝抗性。选择，标准化和分析为三组（GP I-III）（N = 8），将二十四个上颌 - 中央门牙的材料和方法进行论用于柱和核心制剂的合金类型。 GP I（金合金[Au]），GP II（铬 - 钴合金[CO-CR]）和GP III（钛合金合金[Ti]）相对评价用作柱和核心材料。牙齿是椎间渗透处理的，完成后核的牙齿制剂。使用间接蜡图案和胶水制备金矿柱和芯。牙齿安装在树脂碱基上，进行了裂缝试验，分析了裂缝的类型。结果：叶片类型的骨折是实验组中最常见的，其发生率为54.20％。粉碎类型的骨折是下一个最常见的，百分比发病率为29.2％。 BucColinguallual，横向和其他类型的骨折的发生率并不常见，分别具有29.2％，4.2％，8.3％和4.2％的百分比。第II族具有最高的骨折性，平均值为742.89N。第三组和群体的平均值为482.33和361.1123N。在根骨折的载荷值中观察到实验组（I和II）和（II和III）之间的统计学差异（P <0.05）。结论：基于所使用的方案和本研究的限制，金属柱和经过测试的核心材料，GP II具有最高的裂缝抗性值。建议进一步评估这些不同的岗位和核心系统，专门用于柱和核心材料的新合金制剂，以及临床环境中的评估。

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