Tooth Brush Abrasion of Paint-on Resins for Shade Modification of Crown and Bridge Resins

概要

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The purpose of this study was to evaluate the surface roughness and resistance to toothbrusb abrasion of three experimental paint-on composite resins developed for the shade modification of crown and bridge resins. The paint-on resins had less filler volume fraction than restorative composites or the crown and bridge resins and consequently were of low viscosity. The maximum surface roughness (R_max) and the maximum depth loss by abrasion for the paint-on resins following 40,000 cycles of brushing ranged from 2.45 to 4.07 μm and 8.63 to 13.67 μm, respectively. R_max values were 37.7-67.5% lower than that for the crown and bridge resin subjected to the same test. Wear depth was 19.9-49.4% lower than for the crown and bridge resin. These results suggest that the paint-on resins are expected to have adequate resistance to toothbrush abrasion and may therefore be suitable for clinical use.
日本歯科理工学会の論文