A comparative evaluation of dimensional stability of three types of interocclusal recording materials-an in-vitro multi-centre study.
A comparative evaluation of dimensional stability of three types of interocclusal recording materials-an in-vitro multi-centre study.
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DOI：
10.1186/1746-160x-8-27
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发表时间：
2012-10-05
影响因子：
3
通讯作者：
Chaitanya K K
中科院分区：
文献类型：
--
作者：
Tejo SK;Kumar AG;Kattimani VS;Desai PD;Nalla S;Chaitanya K K
不同咬合记录材料的引入使临床医生陷入了两难境地，即在常规临床实践中应该使用哪种材料来精确记录和传递准确的现有咬合记录，以用于患者诊断或工作模型的连接，从而制造出令人满意的修复体。在牙科发展中国家的时代，由于不同的品牌名称，不同的材料被引入用于咬合间记录;由于缺乏体外或体内研究来预测材料的性能和实用性建议，因此材料的实用性对于成功交付修复体是令人困惑的。这项多中心研究的目的是评估三种类型的咬合间记录材料的时间依赖性线性尺寸稳定性;这为临床医生在日常实践中的使用和不同材料的使用建议提供了非常明确的想法。并准确地找出三种咬合记录材料的理想构音时间。研究中使用了市售和ADA批准的聚醚咬合记录糊剂（Ramitec）、聚乙烯基硅氧烷咬合记录糊剂（Jetbite）和氧化锌丁香酚（ZOE）咬合记录糊剂（Super bite）。根据修改的美国牙科协会（ADA）规范第19号制造不锈钢模具。根据制造商的说明书操作每种测试材料。在它们各自的凝固时间后3分钟，将材料从模具中分离，得到标准直径的圆盘。两条平行线和三条垂直线复制在表面上。通过使用移动显微镜（magnus）在不同的时间间隔即1小时、24小时、48小时和72小时测量两条平行线之间的距离，并与根据ADA规范no.19进行的标准模具测量进行比较，以找出这些咬合面间记录材料的尺寸稳定性。共观察120个样本，并对结果进行统计分析。使用方差分析（ANOVA）进行统计分析，然后使用Tukey's Honestly Significant Difference（HSD）检验在0.05的显著性水平下进行组间比较。对数据进行统计分析后，获得结果并进行分析以进行解释。结果显示，所有三种材料在不同间隔的尺寸稳定性之间存在显著差异，p值<0.05。与聚乙烯基硅氧烷咬合（Jetbite）、氧化锌丁香酚（ZOE）咬合（Super bite）相比，聚醚咬合记录材料在1小时、24小时、48小时和72小时时显示出较小的变形和良好的尺寸稳定性。尺寸稳定性随时间的增加而降低，同时受材料因素和时间因素的影响。聚醚被认为是更稳定的咬合间记录材料，其次是硅和氧化锌丁香酚（ZOE）。聚醚的尺寸稳定性较好。与聚醚和聚乙烯硅氧烷相比，氧化锌丁香酚的尺寸更不稳定。我们建议聚醚咬合记录必须在48小时内连接，聚乙烯基硅氧烷咬合记录必须在24小时内连接，ZOE应在1小时内连接，以获得正确的修复，具有最小的变形和最大的满意度，而不会出现修复失败。
The introduction of different interocclusal recording materials has put clinicians in dilemma that which material should be used in routine clinical practice for precise recording and transferring of accurate existing occlusal records for articulation of patient’s diagnostic or working casts in the fabrication of good satisfactory prosthesis. In the era of developing world of dentistry the different materials are introduced for interocclusal record with different brand names because of this; the utility of the material is confusing for successful delivery of prosthesis with lack of in vitro or in vivo studies which will predict the property of the material with utility recommendations. The aim of this multicenter research is to evaluate the time dependent linear dimensional stability of three types of interocclusal recording materials; which gives very clear idea to clinicians in regard to its usage in routine practice and recommendations for usage of the different materials. Also to find out ideal time for articulation of three types of interocclusal recording materials with accuracy. Commercially available and ADA approved Polyether bite registration paste (Ramitec), Poly vinyl siloxane bite registration paste (Jetbite) and Zinc oxide eugenol (ZOE) bite registration paste (Super bite) were used in the study. A stainless steel die was made according to modified American dental Associations (ADA) specification no. 19. Each one of the tested materials were manipulated according to manufacturers’ instructions. The materials separated from die, 3-mins after their respective setting time, resulted in disks of standard diameter. Two parallel lines and three perpendicular lines reproduced on the surface. The distance between two parallel lines was measured at different time intervals i.e. 1 hour, 24, 48 and 72 hours by using travelling microscope (magnus) and compared with standard die measurements made according to ADA specification no.19 to find out the dimensional stability of these interocclusal recording materials. Total 120 samples were made for observation and results were subjected to statistical analysis. Statistical analysis was performed using analysis of variance (ANOVA) and then Tukey’s Honestly Significant Difference (HSD) test for comparison among groups at the 0.05 level of significance. After statistical analysis of the data, results were obtained and analyzed for interpretation. The results shows significant difference between the dimensional stability of all three material at different intervals with p-value <0.05. Comparatively the polyether bite registration material showed less distortion with good dimensional stability compared to Poly vinyl siloxane bite (Jetbite), Zinc oxide eugenol(ZOE) bite (Super bite) at 1 hour, 24, 48, and 72 hours. The dimensional stability decreased with increase in time and is influenced by both material factor and time factor. Polyether was found to be more dimensionally stable interocclusal recording material, which was followed by Silicone and Zinc oxide eugenol (ZOE). The dimensional stability of Polyether was good. Zinc oxide eugenol is dimensionally more unstable when compared with polyether and polyvinyl siloxane. We recommend that the polyether interocclusal records must be articulated within 48 hours and Polyvinylsiloxane interocclusal records must be articulated within 24 hours and the ZOE should be articulated within 1 hour to get a correct restoration to have very minimum distortion and maximum satisfaction without failure of prosthesis.