Effect of denture cleansers on physical properties of heat-polymerized acrylic resin |
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| Authors: | Amanda Peracini Letícia Resende Davi Nathália de Queiroz Ribeiro Raphael Freitas de Souza Cláudia Helena Lovato da Silva Helena de Freitas Oliveira Paranhos |
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| Institution: | 1. Assistant Professor, Department of Prosthodontics, Ludwig-Maximilians University, Munich, Germany;2. Student Assistant, Department of Prosthodontics, Ludwig-Maximilians University, Munich, Germany;3. Dental Technician, Department of Prosthodontics, Ludwig-Maximilians University, Munich, Germany;4. Senior Materials Scientist, Department of Prosthodontics, Ludwig-Maximilians University, Munich, Germany;1. Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey;2. Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, Turkey;3. Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Ordu University, Ordu, Turkey;4. Associate Professor, Division of Restorative Science and Prosthodontics, College of Dentistry, The Ohio State University, Columbus, Ohio;1. Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey;2. Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey;3. Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey;1. Lecturer, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;2. Graduate student, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;3. Graduate student, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;4. Graduate student, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;5. Graduate student, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;6. Associate Professor, Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand;1. Assistant Professor, Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia;2. Distinguished Professor, Loma Linda University School of Dentistry, Loma Linda, Calif.;3. Professor and Director, Advanced Specialty Education Program in Prosthodontics, Loma Linda University School of Dentistry, Loma Linda, Calif;4. Professor, Loma Linda University School of Dentistry, Loma Linda, Calif;5. Professor, Department of Restorative Dentistry and Prosthodontics, The University of Texas School of Dentistry at Houston, Houston, Texas;1. Director, Houston Center for Biomaterials and Biomimetics, The University of Texas School of Dentistry at Houston, Houston, Texas |
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| Abstract: | PurposeThis study aimed to measure the color change, surface roughness and flexural strength of heat-polymerized acrylic resin after its immersion in denture cleansers, simulating a 180-day use.MethodsThirty disk-shaped (15 mm × 4 mm) and 30 rectangular samples (65 mm × 10 mm × 3.3 mm) were prepared from heat-polymerized acrylic resin and immersed in Corega Tabs, Bony Plus, and distilled water. Color measurements (ΔE) were determined by a portable colorimeter. A surface analyzer was used to measure the roughness before and after immersion (ΔRa). The flexural strength (S) was measured using a 3-point bending test. The ΔE values were submitted to statistical analysis by the Kruskal–Wallis test, followed by Dunn's Multiple Comparisons test. The ΔRa and S values were submitted to statistical analysis by ANOVA, followed by a Student–Newman–Keuls test (α = .05).ResultsThe color changes were significantly higher for the Corega Tabs than for the control group. The mean ΔE values quantified by the National Bureau of Standards (NBS) were classified as Trace (0.0–0.5). The Bony Plus group had significantly higher surface roughness than the other groups. Corega Tabs and Bony Plus groups presented lower flexural strength than the control group.ConclusionsAlthough the color changes after the immersion in denture cleansers were clinically insignificant, the Corega Tabs group showed higher color differences. The Bony Plus group showed significantly increased surface roughness. Both effervescent tablets Corega Tabs and Bony Plus significantly diminished the flexural strength of the acrylic resin. |
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