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Effect of polymerization methods on surface roughness and hardness of commercially available self-curing acrylic resins: a comparative study

Francisco Javier Rojas-Macedo, Bernardo Teutle-Coyotecatl, Rosalía Contreras-Bulnes, Laura Emma Rodríguez-Vilchis, Eric Reyes-Cervantes, Ulises Velazquez-Enriquez

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 5 June 2024

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Abstract

Purpose

This paper aims to compare the surface roughness and hardness of three commercially available self-curing acrylic resins for dental use, under different polymerization conditions.

Design/methodology/approach

A comparative in vitro study was conducted using a convenience sample of 12 × 5 × 2 mm blocks with n = 40 for each material (Nic Tone, Arias Plus and Orthocryl®), with subgroups according to the polymerization method: conventional (C) and polymerization under ambient conditions (A). The surface roughness of the materials was measured using a profilometer; hardness was measured with a portable hardness tester. Additionally, surface morphology as well as particles size and morphology were evaluated with scanning electron microscopy.

Findings

There were significant differences in roughness and hardness values between the three self-curing acrylic resins (p < 0.05), as well as within each self-curing acrylic resin according to the polymerization method used (p < 0.05). The samples polymerized with the conventional method presented lower surface roughness and hardness values.

Originality/value

This study provides scientific evidence of values not provided by manufacturers in relation to the surface roughness and hardness of these materials, and all of them met the ideal minimum values of surface roughness, regardless of the polymerization technique used.

Keywords

Acknowledgements

To the University of the State of Mexico (UAEM) and the Dental Materials and Biomaterials Laboratory of the Faculty of Stomatology at the Meritorious Autonomous University of Puebla (BUAP) for supporting this research, especially to Abigailt Flores-Ledesma for the Leeb hardness test and to Engr Emilio Ramírez-Rodríguez for his help in editing the manuscript.

Citation

Rojas-Macedo, F.J., Teutle-Coyotecatl, B., Contreras-Bulnes, R., Rodríguez-Vilchis, L.E., Reyes-Cervantes, E. and Velazquez-Enriquez, U. (2024), "Effect of polymerization methods on surface roughness and hardness of commercially available self-curing acrylic resins: a comparative study", Pigment & Resin Technology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/PRT-12-2023-0120

Publisher

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Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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