Yondem, I.Usumez, A.Gunduz, B.Inan, O.2020-03-262020-03-2620111432-89171433-075Xhttps://dx.doi.org/10.1179/143307511X12998222918633https://hdl.handle.net/20.500.12395/26432The aim of this in vitro study is to examine the polymerisation efficacy of three different polymerisation units through simulated three different ceramic restorations (5 mm in diameter and 2 mm in height) by determining the degree of monomer conversion of a composite luting material. The curing efficiency was observed with Fourier transform infrared micromultiple internal reflectance spectroscopy after 24 h of polymerisation. The degree of conversion was calculated as a percentage of experimentally polymerised versus maximally polymerised composite. The degree of conversion values varied with the light source (light emitting diode, high intensity halogen and conventional halogen) (p<0.05) and the ceramic system (Cercon, IPS Empress 2 and Cerec) (p<0.05).en10.1179/143307511X12998222918633info:eu-repo/semantics/closedAccessFTIRCompositeCeramicPolymerisationLEDZirconiaArticle1528790Q3WOS:000290848000003Q4