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ORIGINAL RESEARCH
Year : 2021  |  Volume : 13  |  Issue : 1  |  Page : 65-70

Variability of dimensional stability of different interocclusal recording materials according to time: A comparative in vitro study


1 Department of Stomatology Rehabilitation, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru; Posgraduate Unit, Faculty of Dentistry, Universidad Nacional Federico Villarreal, Lima, Peru
2 Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru
3 Posgraduate Unit, Faculty of Dentistry, Universidad Nacional Federico Villarreal, Lima, Peru
4 Department of Stomatology Rehabilitation, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru
5 Department of Stomatology Rehabilitation, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru; Postgraduate Department, Faculty of Health Sciences, Universidad Científica del Sur, Lima, Peru

Correspondence Address:
Dr. Frank Mayta-Tovalino
Postgraduate Department, Faculty Health of Sciences, Universidad Cientifica del Sur, Av. Paseo de la República 5544, Miraflores 15074, Lima.
Peru
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jioh.jioh_277_20

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Aim: The aim of this study was to assess variability of dimensional stability of different interocclusal recording materials according to time in a comparative in vitro study. Materials and Methods: This was an experimental in vitro study. The sample was made up of n = 80 intermaxillary records. To record dimensional stability, it used a high-precision device manufactured according to specification No.19 of the American Dental Association. Measurement of discrepancies was recorded with a precision digital caliper (0.01 mm). The intermaxillary recording materials were placed inside the metal device as follows: The silicone by addition was injected using a system of cartridges and special mixing tips and Godiva was immersed in hot water (40–45°C) for 5 min to soften them. Inferential statistical analysis was performed with ANOVA and Bonferroni test, with a level of statistical significance of P < 0.05. Results: Aluwax and Godiva wax presented linear dimensional changes from the time the intermaxillary record was taken and increased with storage time. Occlufast silicone remained stable for up to 7 days (0.120 ± 0.015) mm, while Futar D silicone was stable for up to 22 days (–0.028 ± 0.009) mm. Conclusion: Silicones and polyvinyl siloxanes presented greater dimensional stability than the godiva and Aluwax (Futar D silicone being more stable than the Occlufast silicone). Finally, Godiva presented greater dimensional stability than the Aluwax because it presented the greatest dimensional variation over time with respect to the other materials.


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