eng Science and Education Publishing International Journal of Dental Sciences and Research 2333-1259 2020-03-01 8 2 41 46 10.12691/ijdsr-8-2-3 IJDSR2020823 article Alhanoof Aldegheishem asaldegheishem@pnu.edu.sa 1 Sara Aljohani 2 Toleen Moawiah 2 Shaza Bishti 3 Assistant Professor, Department of Clinical Dental Sciences, College of Dentistry, Princess NourahBint Abdulrahman University, Riyadh, Saudi Arabia Dental Intern, College of Dentistry, Princess NourahBint Abdulrahman University, Riyadh, Saudi Arabia Research Associate, Department of Prosthodontics and Biomaterials, Centre for Implantology, Medical Faculty, RWTH Aachen University Hospital, Aachen, Germany The purpose of thislaboratory study was to examine the compressive strength of ceramic veneers of different thicknesses bonded with two different resin cements.A total of 40 ceramic specimens (5x10mm) in dimensions were fabricated according to manufacturer¡¯s instructions. Specimens were randomly divided according to their thicknesses (1 & 2 mm) into two groups (G1, G2), with 20 samples each. Each group was further subdivided two subgroups(RelyX, G-CemLinkAce) according to luting agent applied. All specimens went through thermocycling (1500 cycles between 5-55°C) and compressive test. According to the Kruskal-Wallis test (P<0.05), the highest mean compressive strength value was observed in the GC 2mm group (30.670 ± 2.992 MPa), whereas the lowest mean compressive strength value was observed in RelyX 1mm group 10.380 ± 3.278 MPa). The visual analysis data suggest that GC 2mm group was the only group that showed 100% failures as mixed.The ideal thickness of the veneer should be up to 1.0 mm for high translucency of the veneer andproper polymerization of the luting cement. http://pubs.sciepub.com/ijdsr/8/2/3/ijdsr-8-2-3.pdf bonding dental ceramics luting agent polymerization compressive strength