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The objective of this study was to evaluate the retentive force of clasps made from three thermoplastic resins and cobalt–chromium (CoCr) alloy by the insertion/removal test simulating 10 years use.On standardized premolar metal crowns 112 clasps were fabricated, including 16 CoCr (1.0mm thick) clasps and 32 clasps (1.0 or 1.5mm thick) from each of the following thermoplastic resins: polyetheretherketon...
The purpose of the study was to evaluate the influence of preparation design, and ceramic material, masticatory fatigue and fracture resistance of non-retentive all-ceramic full-coverage restorations luted on human mandibular molars.Full-coverage occlusal restorations were laboratory fabricated from leucite reinforced glass-ceramic (IPS Empress Esthetic) or lithium disilicate glass-ceramic (IPS e...
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