Effect of Preheating on the Physical Properties of Bis-GMA-Containing, Bis-GMA-Free and Glass Ionomer-Based Fissure Sealants
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| Авторы: | , , |
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| Формат: | artículo original |
| Статус: | Versión publicada |
| Дата публикации: | 2026 |
| Описание: | This study aimed to evaluate in vitro the effects of preheating on the microhardness and surface roughness of fissure sealants with different compositions. Resin-based sealants (Clinpro, Fissurit FX), Bis-GMA-free resin-based sealants (Helioseal F Plus), and glass ionomer-based sealants (Riva Protect) were tested. Fifty-six cylindrical specimens (n=7) were prepared at room temperature and at 55 ± 1°C. Preheating was performed using Ena Heat. Microhardness was measured with a Vickers tester, and surface roughness was evaluated using an atomic force microscope. Data were analyzed using one-way ANOVA, Tukey’s post hoc, and t-tests. Preheating significantly increased microhardness in all groups (p<0.05). Surface roughness decreased in Helioseal F Plus and Fissurit FX (p<0.05) but remained unchanged in Clinpro and Riva Protect (p>0.05). These results indicate that preheating enhances the microhardness of all fissure sealants, while its effect on surface roughness depends on the material type. |
| Страна: | Portal de Revistas UCR |
| Институт: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Язык: | Inglés |
| OAI Identifier: | oai:portal.revistas.ucr.ac.cr:article/2868 |
| Online-ссылка: | https://revistas.ucr.ac.cr/index.php/rOdontos/article/view/2868 |
| Ключевое слово: | Fissure sealant; Microhardness; Preheating; Surface roughness. Sellador de fosas y fisuras; Microdureza; Precalentamiento; Rugosidad superficial. |