温度变化对弹性印模材料尺寸稳定性的影响。
Effect of temperature changes on the dimensional stability of elastomeric impression materials.
作者信息
Kambhampati Sujan, Subhash Vaddavalli, Vijay Chellagulla, Das Aruna
机构信息
Department of Prosthodontics, Dental College & Hospital, Azamgarh, Uttar Pradesh, India.
Department of Orthodontics & Dento-facial Orthopedics, M N R Dental College, Hyderabad, Andhra Pradesh, India.
出版信息
J Int Oral Health. 2014 Feb;6(1):12-9. Epub 2014 Feb 26.
BACKGROUND
The purpose of this study was to evaluate the changed dimensions of dies obtained from impressions made with different combinations of addition sillicones which were subjected to variations in storage temperature.
MATERIALS & METHODS: 45 die stone models were obtained of 45 impressions of which 15 each were stored at three different storage temperatures(25°C, 37°C and 42°C). 15 impressions each were made using one impression technique. The measurements of the dies made from the impressions were measured with the help of Profile Projector with a accuracy of 0.001mm.
RESULTS
The results were statistically analyzed. The results indicated the significant decrease in dimensions when the storage temperature reduced from the mouth temperature. As compared to this there was a marginal increase in overall dimensions of all variables when storage temperature increased.
CONCLUSION
More changes were seen in putty/light body combination followed by monophase and least in heavy/light body combination. How to cite the article: Kambhampati S, Subhash V, Vijay C, Das A. Effect of temperature changes on the dimensional stability of elastomeric impression materials. J Int Oral Health 2014;6(1):12-9.
背景
本研究的目的是评估由不同组合的加成型硅橡胶制取的印模在不同储存温度下所获得的模型尺寸变化。
材料与方法
用45个印模制取了45个模型，其中15个分别储存在三种不同的温度（25°C、37°C和42°C）下。每种印模技术制取15个印模。借助精度为0.001mm的轮廓投影仪测量由印模制取的模型尺寸。
结果
对结果进行了统计学分析。结果表明，当储存温度从口腔温度降低时，尺寸显著减小。与此相比，当储存温度升高时，所有变量的整体尺寸略有增加。
结论
在油泥/轻质体组合中观察到的变化更多，其次是单相组合，在重质/轻质体组合中变化最小。如何引用本文：Kambhampati S, Subhash V, Vijay C, Das A. 温度变化对弹性印模材料尺寸稳定性的影响。《国际口腔健康杂志》2014年；6(1):12 - 9。
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