In Vitro Analysis of Surface Roughness of Acrylic Resin Exposed to the Combined Hygiene Method of Brushing and Immersion inRicinus communisand Sodium Hypochlorite
| Autor: | Marcela Moreira Salles, Viviane de Cássia Oliveira, Raphael Freitas de Souza, Cláudia Helena Silva-Lovato, Maurício Malheiros Badaró, Carolina Noronha Ferraz de Arruda, Helena de Freitas Oliveira Paranhos |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Scanning electron microscope business.industry medicine.medical_treatment Dentistry 030206 dentistry Surface finish 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine chemistry Castor oil visual_art Sodium hypochlorite medicine Surface roughness visual_art.visual_art_medium Immersion (virtual reality) business General Dentistry Saline Acrylic resin 030217 neurology & neurosurgery Nuclear chemistry medicine.drug |
| Zdroj: | Journal of Prosthodontics. 26:516-521 |
| ISSN: | 1059-941X |
| DOI: | 10.1111/jopr.12436 |
| Popis: | Purpose To evaluate a solution based on Ricinus communis (Castor oil) for denture cleansing, comparing it to sodium hypochlorite (NaOCl) for the surface roughness of heat-polymerized acrylic resin. Materials and Methods Forty polished and unpolished resin specimens (90 × 30 × 4 mm) were evaluated before and after their exposure to protocol hygiene: brushing the specimens with a specific denture brush and mild soap for 3 minutes, three times a day, and immersing them in hygiene solutions (0.25% NaOCl—S1 and 0.5% NaOCl—S2; 10% R. communis—S3; saline—S4: control) for 20 minutes. Surface roughness was evaluated by rugosimeter and scanning electron microscopy (SEM) before and after the protocol. For evaluation of surface roughness, polished and unpolished surfaces were used. Results The roughness of the polished surface was not affected by time (p = 0.062), but was affected by solutions (p < 0.0001) and the interaction between factors (p = 0.005). For S1 and S4, the period did not influence the roughness. For S2, there was a change after 7 days, remaining stable after 14 days. For S3, there were changes, and stabilization occurred after 14 days. After 7 and 14 days, S2 and S3 promoted major changes, but after 21 days, there were no differences among solutions, except saline. The unpolished surface was not influenced by factors: period (p = 0.115), solution (p = 0.120), and their interaction (p = 0.382). SEM analysis showed similar results on the evaluation of surface roughness. Conclusions The polished surface of the prosthesis was more susceptible to changes when exposed to hygiene solutions, and although the 0.5% NaOCl solution promoted an increase in the surface roughness compared with the same solution at 0.25% and R. communis at 10%, the values are clinically acceptable. |
| Databáze: | OpenAIRE |
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