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Odontoestomatología
Print version ISSN 0797-0374On-line version ISSN 1688-9339
Abstract
GARCIA, Andrés et al. Dimensional stability of irreversible hydrocolloids with conventional pouring and extended-time pouring available in the Uruguayan market. Odontoestomatología [online]. 2024, vol.26, n.43, e232. Epub June 01, 2024. ISSN 0797-0374. https://doi.org/10.22592/ode2024n43e232.
Aim
. Compare the dimensional stability of a conventional pouring irreversible hydrocolloid with extended pouring irreversible hydrocolloids.
Methodology.
Four products with extended emptying indication were evaluated: Jeltrate Plus (Denstply Sirona), Hydrogum 5 (Zhermack SpA), Algimax (Major), Kromopan (Lascod) and a conventional emptying product (Tropicalgin; Zhermack SpA). For each product, 10 impressions were made and cast in type III plaster at five different storage times (0, 24, 96, 120 and 168 hours). A three-dimensional model scanner was used to digitize the plaster models and make the corresponding measurements: sum of lengths, dimensional variability, percentage of variability.
Results
. The five commercial brands presented a greater sum of lengths than the control group (p<0,033). At 0, 24 and 96h Tropicalgin and Hydrogum 5 presented significantly less dimensional variation compared to the master model (p<0,001). The variability percentages ranged from 0.24 to 0.91%.
Conclusions.
Dimensional stability depends on the product used. Stored correctly, the conventionally cast irreversible hydrocolloid appears not to undergo significant alterations up to 96h, while in the case of Hydrogum 5 it appears to maintain its dimensional stability up to 168h.
Keywords : Dental impression materials; Alginate; Dimensional stability.