Surface roughness and wear of resin cements after toothbrush abrasion
Increased surface roughness and wear of resin cements may cause failure of indirect restorations. The aim of this study was to evaluate quantitatively the surface roughness change and the vertical wear of four resin cements subjected to mechanical toothbrushing abrasion. Ten rectangular specimens (15 × 5 × 4 mm) were fabricated according to manufacturer instructions for each group (n = 10): Nexus 3, Kerr (NX3); RelyX ARC, 3M ESPE (ARC); RelyX U100, 3M ESPE (U100); and Variolink II, Ivoclar/Vivadent (VL2). Initial roughness (Ra, µm) was obtained through 5 readings with a roughness meter. Specimens were then subjected to toothbrushing abrasion (100,000 cycles), and further evaluation was conducted for final roughness. Vertical wear (µm) was quantified by 3 readings of the real profile between control and brushed surfaces. Data were subjected to analysis of variance, followed by Tukey’s test (p < 0.05). The Pearson correlation test was performed between the surface roughness change and wear (p < 0.05). The mean values of initial/final roughness (Ra, µm)/wear (µm) were as follows: NX3 (0.078/0.127/23.175); ARC (0.086/0.246/20.263); U100 (0.296/0.589/16.952); and VL2 (0.313/0.512/22.876). Toothbrushing abrasion increased surface roughness and wear of all resin cements tested, although no correlation was found between those variables. Vertical wear was similar among groups; however, it was considered high and may lead to gap formation in indirect restorations.
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO
2015
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oai:scielo:S1806-832420150001002082018-09-17Surface roughness and wear of resin cements after toothbrush abrasionISHIKIRIAMA,Sérgio KiyoshiORDOÑÉZ-AGUILERA,Juan FernandoMAENOSONO,Rafael MassunariVOLÚ,Fernanda Lessa AmaralMONDELLI,Rafael Francisco Lia Dental Cements Resin Cements Dental Restoration Wear Increased surface roughness and wear of resin cements may cause failure of indirect restorations. The aim of this study was to evaluate quantitatively the surface roughness change and the vertical wear of four resin cements subjected to mechanical toothbrushing abrasion. Ten rectangular specimens (15 × 5 × 4 mm) were fabricated according to manufacturer instructions for each group (n = 10): Nexus 3, Kerr (NX3); RelyX ARC, 3M ESPE (ARC); RelyX U100, 3M ESPE (U100); and Variolink II, Ivoclar/Vivadent (VL2). Initial roughness (Ra, µm) was obtained through 5 readings with a roughness meter. Specimens were then subjected to toothbrushing abrasion (100,000 cycles), and further evaluation was conducted for final roughness. Vertical wear (µm) was quantified by 3 readings of the real profile between control and brushed surfaces. Data were subjected to analysis of variance, followed by Tukey’s test (p < 0.05). The Pearson correlation test was performed between the surface roughness change and wear (p < 0.05). The mean values of initial/final roughness (Ra, µm)/wear (µm) were as follows: NX3 (0.078/0.127/23.175); ARC (0.086/0.246/20.263); U100 (0.296/0.589/16.952); and VL2 (0.313/0.512/22.876). Toothbrushing abrasion increased surface roughness and wear of all resin cements tested, although no correlation was found between those variables. Vertical wear was similar among groups; however, it was considered high and may lead to gap formation in indirect restorations.info:eu-repo/semantics/openAccessSociedade Brasileira de Pesquisa Odontológica - SBPqOBrazilian Oral Research v.29 n.1 20152015-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242015000100208en10.1590/1807-3107BOR-2015.vol29.0011 |
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ISHIKIRIAMA,Sérgio Kiyoshi ORDOÑÉZ-AGUILERA,Juan Fernando MAENOSONO,Rafael Massunari VOLÚ,Fernanda Lessa Amaral MONDELLI,Rafael Francisco Lia |
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ISHIKIRIAMA,Sérgio Kiyoshi ORDOÑÉZ-AGUILERA,Juan Fernando MAENOSONO,Rafael Massunari VOLÚ,Fernanda Lessa Amaral MONDELLI,Rafael Francisco Lia Surface roughness and wear of resin cements after toothbrush abrasion |
author_facet |
ISHIKIRIAMA,Sérgio Kiyoshi ORDOÑÉZ-AGUILERA,Juan Fernando MAENOSONO,Rafael Massunari VOLÚ,Fernanda Lessa Amaral MONDELLI,Rafael Francisco Lia |
author_sort |
ISHIKIRIAMA,Sérgio Kiyoshi |
title |
Surface roughness and wear of resin cements after toothbrush abrasion |
title_short |
Surface roughness and wear of resin cements after toothbrush abrasion |
title_full |
Surface roughness and wear of resin cements after toothbrush abrasion |
title_fullStr |
Surface roughness and wear of resin cements after toothbrush abrasion |
title_full_unstemmed |
Surface roughness and wear of resin cements after toothbrush abrasion |
title_sort |
surface roughness and wear of resin cements after toothbrush abrasion |
description |
Increased surface roughness and wear of resin cements may cause failure of indirect restorations. The aim of this study was to evaluate quantitatively the surface roughness change and the vertical wear of four resin cements subjected to mechanical toothbrushing abrasion. Ten rectangular specimens (15 × 5 × 4 mm) were fabricated according to manufacturer instructions for each group (n = 10): Nexus 3, Kerr (NX3); RelyX ARC, 3M ESPE (ARC); RelyX U100, 3M ESPE (U100); and Variolink II, Ivoclar/Vivadent (VL2). Initial roughness (Ra, µm) was obtained through 5 readings with a roughness meter. Specimens were then subjected to toothbrushing abrasion (100,000 cycles), and further evaluation was conducted for final roughness. Vertical wear (µm) was quantified by 3 readings of the real profile between control and brushed surfaces. Data were subjected to analysis of variance, followed by Tukey’s test (p < 0.05). The Pearson correlation test was performed between the surface roughness change and wear (p < 0.05). The mean values of initial/final roughness (Ra, µm)/wear (µm) were as follows: NX3 (0.078/0.127/23.175); ARC (0.086/0.246/20.263); U100 (0.296/0.589/16.952); and VL2 (0.313/0.512/22.876). Toothbrushing abrasion increased surface roughness and wear of all resin cements tested, although no correlation was found between those variables. Vertical wear was similar among groups; however, it was considered high and may lead to gap formation in indirect restorations. |
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Sociedade Brasileira de Pesquisa Odontológica - SBPqO |
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2015 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-83242015000100208 |
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