Effect of microwave polymerization on the thermomechanical and surface properties of ocular prosthetic acrylic resins
| Autor: | Luis Antonio, Flores-Espinosa, José Federico, Torres-Teran, Luis Octavio, Sánchez-Vargas, Marine, Ortiz-Magdaleno, José Amir, Gonzalez-Calderón, Norma Verónica, Zabala-Alonso, Vladimir Alonso, Escobar-Barrios, Mariana, Gutiérrez-Sanchez, Gregorio, Sánchez-Balderas, José Elías, Pérez-López |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Bio-Medical Materials and Engineering. :1-14 |
| ISSN: | 1878-3619 0959-2989 |
| DOI: | 10.3233/bme-221433 |
| Popis: | BACKGROUND: Polymerization conditions affect the physical-mechanical properties of acrylic resins used for craniofacial prostheses. OBJECTIVE: The aim of this study was to evaluate the effect of microwave polymerization on the thermomechanical properties and surface morphology of ocular prostheses fabricated with polymethyl methacrylate (PMMA). METHODS: PMMA discs were polymerized with microwave energy and with conventional heat polymerization (CHP) method. Ocular prostheses were fabricated to determine whether there were changes according to the polymerization method. The surface morphology and roughness were observed under SEM and AFM. The Vickers Hardness number (VHN) and flexural strength were measured. Thermal properties were evaluated with TGA/DSC, and chemical composition with FTIR. RESULTS: The PMMA acrylic resin polymerized with microwave energy showed a smooth surface with some relief areas. In the internal surface of the ocular prosthesis with microwave energy the PMMA is more compact. The mean roughness values were higher and statistically significant with CHP (P |
| Databáze: | OpenAIRE |
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