![]() CAD/CAM RCBs are attracting attention as an alternative material to such ceramics because their cost is less. Additionally, less antagonist enamel wear (0.056–0.061 mm 3) of CAD/CAM RCBs compared with polymer infiltrated ceramics (0.108–0.280 mm 3) and glass ceramics (0.276–0.420 mm 3) has been reported (Lawson et al., 2016). ![]() The pre-polymerized resin matrix under high pressure or high temperature (Ruse and Sadoun, 2014), providing stable and excellent mechanical performance such as flexural strength (Dry: ~206 MPa, Aged: ~172 MPa (Lucsanszky and Ruse, 2020)), hardness (62–102 VHN (Lawson et al., 2016)), Weibull modulus (11.2–31.5 (Choi et al., 2019)), and fracture toughness (~1.47 MPa m 1/2 (Lucsanszky and Ruse, 2020)) compared with conventional photo-polymerized resin composites used in fillings. CAD/CAM-fabricated resin composite blocks (RCBs) containing nano-filler particles are available for use in anterior (Zacher et al., 2020) and posterior (Yamaguchi et al., 2018a) restorations. ![]() Computer-aided design/computer-aided manufacturing (CAD/CAM) technologies have introduced a new era and accelerated the evolution of dental restorations (Rekow, 2020 Sulaiman, 2020).
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