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Title: Effect of Mouthrinses on Microhardness and Wear of Composite and Compomer Restoratives
Authors: Yap, A.U.J. 
Tan, B.W.Y.
Tay, L.C.
Chang, K.M.
Loy, T.K.
Mok, B.Y.Y. 
Issue Date: Nov-2003
Citation: Yap, A.U.J.,Tan, B.W.Y.,Tay, L.C.,Chang, K.M.,Loy, T.K.,Mok, B.Y.Y. (2003-11). Effect of Mouthrinses on Microhardness and Wear of Composite and Compomer Restoratives. Operative Dentistry 28 (6) : 740-746. ScholarBank@NUS Repository.
Abstract: This study investigated the effect of commercially available mouthrinses on the microhardness and wear of composite (Esthet-X, Dentsply) and compomer (Dyract Posterior, Dentsply) restoratives. Fifty-four hardness and 36 wear specimens of each material were fabricated and stored in distilled water at 37°C for two weeks. The specimens were then randomly divided into six equal groups and exposed to the following solutions for 24 hours at 37°C: distilled water [WC] (control); Listerine Original [AP] (alcohol-containing essential oil/phenolic compound mouthrinse); Colgate Chloropharm [AC] (alcohol-containing chlorhexidine mouthrinse); Oral B Tooth & Gum Care [AF] (alcohol-containing fluoride mouthrinse); Oral B Tooth & Gum Care Alcohol Free [OF] (alcohol free fluoride mouthrinse) and Oral B Sensitive [PF] (phosphoric acid containing fluoride mouthrinse). After conditioning, the specimens were subjected to hardness testing using a digital microhardness tester (load=500 gf; dwell time=15 seconds) and wear testing with a reciprocal compression-sliding system (contact stress=20 MPa). Wear depth was measured every 1,000 cycles up to 10,000 cycles using profilometry. Data was analyzed using ANOVA/Scheffe's test at significance level 0.05. Dyract was significantly softened by AP, while Esthet-X was significantly softened by AC and AP. The wear resistance of Dyract was significantly reduced after exposure to PF, while the wear resistance of Esthet-X was significantly reduced by AC. The effect of mouthrinses on hardness and wear was material dependent.
Source Title: Operative Dentistry
ISSN: 03617734
Appears in Collections:Staff Publications

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