Comparitive Evaluation of the Dimensional Accuracy of Multiple Casts Poured From Two Different Elastomeric Impression Materials
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2018, Vol 17, Issue 9
Abstract
Aim: The aim of the present study is to compare accuracy and dimensional stability of two different elastomeric impression materials, with respect to obtaining multiple casts at various times of pours. Materials and methods: A master die was prepared with specific dimension and impression was made using two different elastomeric impression materials and the impression was poured at various time periods. Casts thus obtained were evaluated under a CMM (Coordinate Measuring Machine) to evaluate various dimensional changes. Results: Addition silicones provided dies which were shorter in height and bigger in diameter in 2nd and 3rd pour. Condensation silicones showed insignificant changes from the master die at the Immediate pour but deteriorated rapidly after that in subsequent pours. Conclusion: None of the two impression material showed a consistent behavior up to the third pour They occasionally showed deviation from the pattern, but all these values were almost statistically insignificant.
Authors and Affiliations
Dr Sony Sebastian, DrKurien Varghese, DrBilaalSidhique Abubacker, DrJiji M Edakalathur
Keywords
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- EP ID EP395393
- DOI 10.9790/0853-1709070509.
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