Tooth brush abrasion of paint-on resins for shade modification of crown and bridge resins.
The purpose of this study was to evaluate the surface roughness and resistance to toothbrush 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 (Rmax) 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 microm and 8.63 to 13.67 microm, respectively. Rmax 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.
Fujii
Koichi
K
Department of Biomaterials Science, Field of Oral and Maxillofacial Rehabilitation, Course for Advanced Therapeutics, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan.
Ban
Seiji
S
McCabe
John F
JF
D003116:Color; D003188:Composite Resins / Q000737:chemistry*; D003442:Crowns; D017267:Dental Prosthesis Design; D019554:Dental Restoration Wear; D003779:Denture Design; D003829:Denture, Partial; D005898:Glass / Q000737:chemistry; D006244:Hardness; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D013499:Surface Properties; D014099:Toothbrushing / Q000295:instrumentation*; D014783:Viscosity
D003188:Composite Resins; D008689:Methacrylates; D011140:Polyurethanes; C029824:urethane dimethacrylate luting resin