title: Surface roughness analysis of four restorative materials exposed to 10% and 15% carbamide peroxide.
abstract: The aim of this study was to evaluate the effects of carbamide peroxide (CP) on surfaces of different restorative materials. Porcelain, composite resin, glass ionomer, and amalgam were analyzed in this study. Surface roughness (Ra) was measured before and after treatment with 10% and 15% CP. Fifteen percent CP increased Ra values in both the glass ionomer and amalgam subgroups, while 10% CP increased Ra values in the glass ionomer subgroup only. Changes in restorative material surfaces can be more severe when bleaching is completed without a clinician's supervision. Hence, thorough patient examinations must be done before, during, and after bleaching treatment.
authors.affiliation: Department of Dental Materials and Prosthodontics, Univ Estadual Paulista, Sao Paulo, Brazil.
authors.forename: Adriana Cristina
authors.initials: AC
authors.lastname: Zavanelli
authors.forename: Vitor Quinelli
authors.initials: VQ
authors.lastname: Mazaro
authors.forename: Cristina Ramos
authors.initials: CR
authors.lastname: Silva
authors.forename: Ricardo Alexandre
authors.initials: RA
authors.lastname: Zavanelli
authors.forename: Daniela Nardi
authors.initials: DN
authors.lastname: Mancuso
mesh_terms: D000077463:Carbamide Peroxide; D003188:Composite Resins / Q000737:chemistry; D003723:Dental Amalgam / Q000737:chemistry; D003764:Dental Materials / Q000737:chemistry*; D003775:Dental Polishing / Q000379:methods; D003776:Dental Porcelain / Q000737:chemistry; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D006813:Humidity; D008422:Materials Testing; D010545:Peroxides / Q000737:chemistry*; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D058205:Tooth Bleaching Agents / Q000737:chemistry*; D014508:Urea / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D003188:Composite Resins; D003764:Dental Materials; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D010545:Peroxides; D019279:Resin Cements; D012117:Resins, Synthetic; C467914:TPH spectrum; D058205:Tooth Bleaching Agents; D003776:Dental Porcelain; D000077463:Carbamide Peroxide; C081267:Willceram porcelain; D003723:Dental Amalgam; C092423:Permite C; D014508:Urea