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Baba Farid University Dental Journal
Year : 2011, Volume : 2, Issue : supl2
First page : ( 112) Last page : ( 116)
Print ISSN : 0976-8181. Online ISSN : 2230-7273.

Effect of Food- Simulating Liquids on the Surface Characteristics of A Composite, A Polyacid-Modified Composite and A Resin-Modified Glass-Ionomer Cement-in Vitro Study

Sharma Shalini, Reader

Address for Correspondence: Dr. Shalini Sharma, Reader Department of Pedodontics and Preventive Dentistry, Surendera Dental College and Research Institute H. H. Gardens, Sriganganagar-3335001 Rajasthan, India

Online published on 7 December, 2011.


In the oral cavity, the processes of biodegradation, such as sliding, abrasion, chemical degradation and fatigue have an appreciable influence on the satisfactory clinical performance of dental restorations. A composite, a polyacid-modified composite resin and a Resin-Modified glass-ionomer cement were made into pellets and stored in food-simulating liquids - citric acid, lactic acid and heptane for 7 days and 30 days following which their microhardness and surface roughness was evaluated. Maximum changes were noted in first 7 days and composite showed the maximum and RMGIC showed the minimum resistance to the effect of food-simulating liquids.



Composite, Microhardness, Surface roughness, Food-simulating liquids, Citric acid.


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