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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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/79894 | ISSN: | 03617734 |
Appears in Collections: | Staff Publications |
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