Surface properties and gloss of CAD/CAM composites after toothbrush abrasion testing
| Autor: | Takayuki Yoneyama, Hiroshi Nogawa, Hiroyasu Koizumi, Kentaro Okamura, Akihisa Kodaira |
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| Rok vydání: | 2019 |
| Předmět: |
Ceramics
Mechanical property Materials science Surface Properties CAD 030206 dentistry Composite Resins Gloss (optics) 03 medical and health sciences 0302 clinical medicine Materials Testing Surface roughness Knoop hardness test Computer-Aided Design Toothbrush abrasion Composite material General Dentistry 030217 neurology & neurosurgery |
| Zdroj: | Journal of Oral Science. 61:358-363 |
| ISSN: | 1880-4926 1343-4934 |
| DOI: | 10.2334/josnusd.18-0350 |
| Popis: | The purpose of this study was to evaluate the surface properties and gloss of CAD/CAM composites after toothbrush abrasion testing. Four CAD/CAM composites for molars (Cerasmart 300, Estelite P block, Katana Avencia P block, and KZR-CAD HR3 Gammatheta), one CAD/CAM composite for premolars (Shofu Block HC Hard), and one feldspathic ceramics (Vitablocs Mark II) were assessed. Knoop hardness number, gloss, and surface roughness (Ra, Rz, and Sa) were measured before and after toothbrush abrasion testing. Knoop hardness number values were in the order Vitablocs Mark II > Katana Avencia P block > Estelite P Block > Shofu Block HC Hard > Cerasmart 300 > KZR-CAD HR3 Gammatheta. After testing, the gloss of Estelite P block and KZR-CAD HR3 Gammatheta was greatly decreased and surface roughness was greatly increased. Periodic recall and re-polishing may thus be necessary when these products are used clinically. |
| Databáze: | OpenAIRE |
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