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Chandrakala, S.
- A Comparative Study to Determine the Wettability of Different Impression Materials
Authors
1 Sree Balaji Dental College and Hospital, BIHER, Chennai, IN
2 Department of Prosthodontics, Sree Balaji Dental College and Hospital, BIHER, Chennai, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 1183-1189Abstract
Background: Wettability of impression materials is essential to obtain a void-free cast. The purpose of this study was to evaluate the wettability of the impression materials immediately after setting and also to determine the change in wettability after 24 hours.
Materials and Method: Four impression materials were selected among which two were hydrocolloids and two were elastomers. Fifteen samples of each were experimentally tested immediately and 24 hours after sample preparation. Data obtained were subjected to t-test and analysis of variance for statistical comparisons at a 5% level of significance.
Results: The contact angle values were recorded immediately and 24 hours after setting. Lesser the contact angle value more the wettability of the impression material. The changes in wettability with respect to time were statistically analysed and it showed a statistically significant difference between the materials both immediately and after 24 hours.
Conclusion: Within the limitations of the study, Elastomers showed better wettability when compared to the hydrocolloids at both time interval and they have negligible time dependant change. Newly introduced cream alginate showed better wettability at both time intervals equivalent to the elastomers and can be considered for usage.
Keywords
Wettability, Elastomers, Gypsum.- Impression Materials:A Comparative Review of Impression Materials Most Commonly Used in Prosthodontics
Authors
1 Department of Prosthodontics, Sree Balaji Dental College and Hospital, BIHER, IN
Source
Indian Journal of Public Health Research & Development, Vol 10, No 12 (2019), Pagination: 1202-1205Abstract
Impression materials are used to record intraoral structures for the fabrication of definitive restorations. Accurate impressions are necessary for construction of any dental prosthesis. The relationship between static and mobile oral structures must be reproduced accurately for an optimum cast. Making a cast in gypsum materials from an impression of dental anatomy aids dentists in designing and constructing removable and fixed prostheses. The accuracy of these final restorations depends greatly on the impression materials and techniques. Accurate impressions depend on identifying the applications that do or do not fit each material’s characteristics. Materials used without adequate knowledge of their characteristics can impair a successful outcome. Often, the choice of impression materials depends on the subjective choice of the operator based on personal preferences and past experience with particular materials.Keywords
Impression Materials, Gypsum, Hydrocolloids.- Cast Partial Denture―A Case Report
Authors
1 Sree Balaji Dental College and Hospital, BIHER, IN
2 Department of Prosthodontics, Sree Balaji Dental College and Hospital, BIHER, IN