Surface characterization of current composites after toothbrush abrasion
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概要
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The present study was designed to evaluate the surface roughness and the gloss of current composites before and after toothbrush abrasion. We assessed forty dimensionally standardized composite specimens (n=8/group) from five composites: two nanohybrids (i. e., IPS Empress Direct Enamel and IPS Empress Direct Dentin), two microhybrids (i. e., Clearfil AP-X and Filtek Z250) and one organically modified ceramics (Admira). All of the specimens were polished with 4000-grid silicon carbide papers. Surface roughness was measured with a profilometer and gloss was measured with a glossmeter before and after powered toothbrush abrasion with a 1:1 slurry (dentifrice/tap water) at 12,000 strokes in a toothbrush simulator. There was a significant increase in the surface roughness and a reduction in gloss after toothbrush abrasion in all of the composites except Clearfil AP-X (p<0.05). Simple regression analysis showed that there was not an association between the surface roughness and the gloss (R2=0.191, p<0.001).
著者
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Takahashi Rena
Cariology And Operative Dentistry Department Of Restorative Sciences Graduate School Of Medical And
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Hickel Reinhard
Department Of Operative Dentistry University Of Munich
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Kunzelmann Karl-heinz
Department Of Operative Dentistry Ludwig-maximilians-university
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TAGAMI Junji
Global Center of Excellence (GCOE) Program ; International Research Center for Molecular Science in
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Nikaido Toru
Cariology And Operative Denatistry Department Of Restorative Sciences Graduate School Of Medical And
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TAGAMI Junji
Global Center of Excellence (GCOE) Program, International Research Center for Molecular Science in Tooth and Bone Diseases at Tokyo Medical and Dental University
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JIN Jian
State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University
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