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The conversion of monomer to polymer is not complete in denture base resins and residual monomer left can cause mucosal irritation, inflammation, and allergic reactions in tissues adjacent to dentures. The mechanical properties of denture base resins have been found to be lacking with increased residual monomer content. Therefore, it is desirable to reduce the residual monomer content in the processed denture. In the present study Gas chromatography method was used to determine the levels of residual methyl methacrylate monomer of two different brands of heat cure denture base resins processed by two different polymerization cycles. The study concluded that while processing the denture sufficient length of boiling phase should be given and for each brand, manufacturer’s instructions should be strictly followed while selecting polymerization cycle.

The presence of Residual monomer content in processed dentures is not desirable. Different methods are used for reducing the residual monomer content after processing. In the present study the effects of two post cure treatments (water immersion and additional curing cycle) on the residual monomer content of two commonly used denture base resins (Acralyn H and Trevalon Hi) were evaluated by using gas chromatography. Study concluded that both water immersion for one day at room temperature and additional curing cycle reduced the residual monomer content in both brands which was initially high after processing.