Effect of toothbrush/dentifrice abrasion on weight variation, surface roughness, surface morphology and hardness of conventional and CAD/CAM denture base materials
| Autor: | Ming-Sung Hsu, Chen-Yi Lee, Ju-Hui Wu, Yen-Hao Chang, Ker-Kong Chen, Je-Kang Du |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Toothbrushing
Abrasion (dental) Denture Bases business.product_category Materials science Surface Properties 0206 medical engineering 02 engineering and technology law.invention 03 medical and health sciences 0302 clinical medicine Hardness law Materials Testing medicine Dentifrice Surface roughness Composite material General Dentistry Dentifrices Toothpaste 030206 dentistry medicine.disease 020601 biomedical engineering Polyamide Vickers hardness test Ceramics and Composites Denture base Toothbrush business |
| Zdroj: | Dental Materials Journal. 40:220-227 |
| ISSN: | 1881-1361 0287-4547 |
| DOI: | 10.4012/dmj.2019-226 |
| Popis: | We evaluated the effect of toothbrush/dentifrice brushing on the weight variation and surface properties of different denture bases. Four denture base materials (conventional heat cure, high impact, CAD/CAM, and polyamide resins) were subjected to toothbrushing abrasion (50,000 strokes). The weight value, surface roughness, and topography of each group were determined before and after toothbrushing. The hardness was measured by the Vickers hardness test. Data were analyzed using ANOVA and Bonferroni tests. After toothbrushing, the weight of the polyamide resin had significantly increased; significant weight losses were observed for conventional heat cure and high impact resins, but none for the CAD/CAM resin. The surface roughness of each group increased significantly owing to the wear caused by toothbrushing. The weight variation and surface roughness were not affected by the hardness. Our results suggested that denture base materials deteriorate after brushing with toothpaste, in which the polyamide resin exhibited lower levels of abrasion. |
| Databáze: | OpenAIRE |
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