Surface roughness, water sorption and solubility of removable denture bases acrylic resins polymerized conventionally or by (CAD/CAM)

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Dentistry is progressing rapidly due to increased demand of functional and aesthetically appealing dental prosthesis. The research is focussed on restoration of denture problems in a way that they are close to natural functionally as well as aesthetically. Recently, computer- aided design (CAD) /computer-aided manufacturing (CAM) technology for design and manufacturing of dental restorations has been introduced for dental restoration fabrication. The process is known to have high precision, user friendly and less laborious. Lately, a number of studies have been published explaining traditional methods are better and efficient as well as about CAD/CAM methods. This study is designed to investigate surface roughness, water sorption and solubility properties of the dentures synthesised by traditional methods and CAD/CAM, followed by comparative analysis of both methods in order to make conclusion about which technique is better for dental restorations. Cylindrical specimens were fabricated using conventional and CAD/CAM method respectively. The surface roughness, water sorption and solubility were evaluated. Chi square test for surface roughness was performed followed by comparative tests by using t- test for water sorption and water solubility was employed in order to analyse the data. CAD/CAM fabricated PMMA samples exhibited higher surface roughness properties in all test methods considered for the present study. However, comparable water sorption and water solubility were observed for conventional heat and cold curing technique, and CAD/CAM technique. No significant correlation was found between water sorption and water solubility. CAD/CAM technique was concluded to be a suitable solution for edentulism.