Evaluation of Three Different Processing Techniques in the Fabrication of Complete Dentures.
Evaluation of Three Different Processing Techniques in the Fabrication of Complete Dentures.
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DOI：
10.4103/jispcd.jispcd_102_17
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发表时间：
2017-06
影响因子：
1.1
通讯作者：
Pachalla S
中科院分区：
文献类型：
--
作者：
Chintalacheruvu VK;Balraj RU;Putchala LS;Pachalla S
本研究的目的是比较三种不同的处理技术的有效性，并通过咬合干扰的数量和义齿处理后垂直尺寸的增加来了解处理技术的准确性。本研究采用横断面研究方法，选取18例需要制作全口义齿的患者，并将其分为三个亚组。三种加工技术，压缩成型和注射成型，使用预聚树脂和未聚合树脂，被用来制造义齿的每一组。处理后，实验室重新安装的义齿进行了评价的咬合干扰的数量在中心和偏心的关系和变化的垂直尺寸通过垂直销上升的牙合架。使用统计检验ANOVA和IBM的SPSS软件版本19.0分析数据。对三组数据进行单因素方差分析。方差分析检验后，对具有显著性差异的结果进行事后检验。在正中位、偏心位、右侧非工作位和左侧工作位，加压成型技术的咬合干扰数均高于两种注射成型技术，差异有统计学意义（P < 0.05）。据报道，与注射成型技术相比，压缩成型技术的平均垂直销上升（0.52 mm）更高，这具有统计学显著性（P < 0.001）。在本研究的限制范围内，与压缩成型技术相比，注射成型技术表现出更少的加工误差，具有统计学显著性。在两种注塑成型系统中报告的加工误差没有统计学显著差异。
The objective of the present study is to compare the effectiveness of three different processing techniques and to find out the accuracy of processing techniques through number of occlusal interferences and increase in vertical dimension after denture processing. A cross-sectional study was conducted on a sample of 18 patients indicated for complete denture fabrication was selected for the study and they were divided into three subgroups. Three processing techniques, compression molding and injection molding using prepolymerized resin and unpolymerized resin, were used to fabricate dentures for each of the groups. After processing, laboratory-remounted dentures were evaluated for number of occlusal interferences in centric and eccentric relations and change in vertical dimension through vertical pin rise in articulator. Data were analyzed using statistical test ANOVA and SPSS software version 19.0 by IBM was used. Data obtained from three groups were subjected to one-way ANOVA test. After ANOVA test, results with significant variations were subjected to post hoc test. Number of occlusal interferences with compression molding technique was reported to be more in both centric and eccentric positions as compared to the two injection molding techniques with statistical significance in centric, protrusive, right lateral nonworking, and left lateral working positions (P < 0.05). Mean vertical pin rise (0.52 mm) was reported to more in compression molding technique as compared to injection molding techniques, which is statistically significant (P < 0.001). Within the limitations of this study, injection molding techniques exhibited less processing errors as compared to compression molding technique with statistical significance. There was no statistically significant difference in processing errors reported within two injection molding systems.