Porosity of Heat Cured Acrylic After Adding Salvador Persica

Authors

  • Reem Ahmed Shihab Department of Prosthodontics, College of Dentistry, Tikrit University, Tikrit, Iraq

DOI:

https://doi.org/10.5195/d3000.2026.1289

Keywords:

PMMA, Dental Materials, Prosthodontics

Abstract

Objective: This study aimed to evaluate the effect of incorporating Salvador Persica powder at different concentrations on the porosity of heat-cure acrylic resin. Materials and Methods: An in vitro experiment was conducted using heat-cure PMMA acrylic resin specimens fabricated through a conventional water-bath polymerization technique. Specimens were divided into three groups (n = 10): control group with no additive, group 2 (heat cure + 0.5% Salvador Persica), and group 3 (heat cure + 1% Salvador persica). The additive was incorporated using a weight replacement method while maintaining a standardize powder-liquid ratio.   After polymerization specimens were put in a desiccation, specimens were weighed to obtain initial dry weight (Wd), followed by immersion in distilled water for 24 hours and reweighing obtain wet weight (Ws). Results: The control group administrated the lowest mean porosity value (0.281 ± 0.0202). Increase mean values were observed in both experimental groups (0.37 ± 0.32 for 0.5% and 0.36 ± 0.047 for 1%). No statically significant difference was found between the control and 0.5% groups (p = 0.391), whereas a high significant was observed between the control and 1% groups (p = 0.0007). No significant difference was detected between the 0.5% and 1% concentrations (p = 0.924). Conclusion: Incorporation of Salvadora persica powder influenced the porosity of heat-cure acrylic resin. Low concentration (0.5%) did not significantly affect porosity, while higher concentration (1%) significantly increased water sorption, suggesting increased internal porosity. Optimization of additive concentration is therefore essential to balance potential biological benefits with material performance.

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Published

2026-05-01

Issue

Vol. 14 No. 1 (2026)

Section

Adults & the Elderly

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Copyright (c) 2026 Reem Ahmed Shihab

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Revised 7/16/2018. Revision Description: Removed outdated link.