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Comparative Analysis of Alginate Dimensional Stability with Varied Pouring Intervals

Year: 2024

Type: article

Abstract: A BSTRACT Background: Alginate is a widely used dental impression material in clinical settings. Despite advances in impression materials and the growing popularity of digital impression techniques, alginate remains a staple due to its ease of use and cost-effectiveness. The dimensional stability of irreversible hydrocolloid alginate is influenced by various factors, including storage temperature and the elapsed time between taking the impression and pouring the cast. Materials and Methods: This in vitro study aimed to evaluate the dimensional stability of two alginate impression materials, Cavex CA37 and Zhermack Hydrogum 5, over four different time periods. Statistical analyses, including Student’s t -test, three-way ANOVA, post hoc Tukey HSD tests, and ANCOVA, were used to determine the significance of differences between groups and the impact of pouring time on dimensional stability. Results: Post hoc analysis revealed significant differences in dimensional stability between the two alginates across different time periods. For Zhermack Hydrogum 5, a significant difference ( P < 0.05) was observed between the 120-hour mark and the other three time periods. Cavex CA37 exhibited significant differences ( P < 0.05) between immediate pouring (0 hours) and the subsequent three time periods. Conclusion: The findings suggest that impressions made with Cavex CA37 should be poured immediately to ensure optimal dimensional stability. Conversely, Zhermack Hydrogum 5 maintains accurate dimensional stability when poured within 24 hours, making it a more flexible option in clinical practice.

Source: Journal of Pharmacy And Bioallied Sciences

DOI: 10.4103/jpbs.jpbs_762_24