Chen, Yi-Chun A.2019-12-162019-12-1619961996(OCoLC)39151144b2200600xhttps://hdl.handle.net/2144/38864PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Dental Medicine, 1996 (Pediatric Dentistry).Includes bibliographical references (leaves 83-86).The effects of surface finish on flexural strength and surface roughness of a feldspathic porcelain (Vita Omega), aluminous porcelain (Vita AIpha) and a computer aided design-computer aided manufacture porcelain (Vita MKII) were examined. Testing bars were fabricated by conventional technique for Vita Alpha &Vita Omega groups. MKII specimens were obtained by sectioning from a manufacturer's prefabricated block. Vita Alpha & MKII had 5 surface treatment groups and Vita Omega had an additional 4 groups. The groups consisted of self-glaze, Shofu polish, overglaze, Perladia polish, and Buehler polish. The additional groups consist of Buehler combined with Shofu and Perladia; overglaze combined with Shofu and Perladia. All groups were subjected for surface roughness evaluation with the aid of S.E.M. and profilometric analysis. Overglaze significantly increased (p[less than].05) flexural strength (three-point-bending) and had the smoothest surface of all three ceramic materials. Self-glaze, Shofu, Perladia and Buehler had no statistical difference in flexural strength among Vita Alpha and Vita Omega groups.en-USThis work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.CeramicsDental materialsThesis/Dissertation