Department of Conservative Dentistry and Endodontics organised a guest lecture on “Kinetics of Polymerization in Composite resin”on 21.9.18 presented by Dr. D. Sihivahanan, Reader, Department of Conservative Dentistry and Endodontics, SRM Katankulathur Dental College and Hospitals, Chennai. The study of polymerization kinetics is of great interest in dentistry, particularly for restorative composites. The rate at which that reaction takes place influences not only the final degree of conversion but also some of the important physical and mechanical properties of the final material. The guest lecture focused on how the polymerization progress is important for researchers developing new materials and for clinicians to obtain the best performance out of the final restoration.