Authors : Irfanul Huda, Irfanul Huda, Aaysha Tabinda Nabi, Aaysha Tabinda Nabi, Porus S Turner, Porus S Turner, Chetan Hegde, Chetan Hegde
DOI : 10.18231/j.aprd.2019.008
Volume : 5
Issue : 2
Year : 2019
Page No : 28-36
Introduction: To study the residual monomer leached out in heat cure poly methylmethacrylate Resins of commonly used brands using different polymerization cycles.
Aims and Objectives: To compare the amount of leachable residual monomer in Poly methylmethacrylate of heat cure brands available in market at different time interval that are polymerized by short and long curing cycle.
Results: Results from the study shows that following short curing cycle denture has to be kept in water for 48 hours whereas following long curing cycle denture has to be kept in water for minimum for 24 hours in order to deliver denture with least leachable residual monomer.
Conclusion: From the results of this study it was concluded higher level of residual methylmethacrylate was leached from short curing cycle than long curing cycle, suggesting that long curing cycle causes greater degree of polymerization as compared to the short curing cycle, resulting in the reduction of amount of residual monomer in long curing cycle. It was observed that by keeping immersed regular resin denture of short curing cycle for 48 hours duration, the leaching of monomer has significantly decreased, whereas long curing cycle requires resin denture to be immersed for 24 hours duration only which showed significant reduction in leaching of monomer.
Keywords: Short curing cycle, long curing cycle, Heat cure acrylic resin.