title: Effects of disinfecting alginate impressions on the scratch hardness of stone models.
abstract: This study investigated the effects of disinfecting alginate impressions on the scratch depth of resultant stone models. Eleven brands of alginate impression material and two disinfectants, 1% sodium hypochlorite and 2% glutaraldehyde, were used. Impressions were immersed in disinfectant solutions or stored in sealed bags after spraying with disinfectants, and then poured with a type V dental stone. The scratch depth of the stone model obtained from disinfected impression was measured. The storage of alginate impressions after spraying with disinfectants did not increase the scratch depth of resultant stone models. However, the effect of immersion in disinfectants on scratch depth varied with the brand of the alginate impression material.
authors.affiliation: Department of Dental Materials, Nihon University School of Dentistry, Tokyo, Japan. hiraguchi@dent.nihon-u.ac.jp
authors.forename: Hisako
authors.initials: H
authors.lastname: Hiraguchi
authors.forename: Hisami
authors.initials: H
authors.lastname: Nakagawa
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Wakashima
authors.forename: Kohichi
authors.initials: K
authors.lastname: Miyanaga
authors.forename: Masataka
authors.initials: M
authors.lastname: Saigo
authors.forename: Minoru
authors.initials: M
authors.lastname: Nishiyama
mesh_terms: D000464:Alginates / Q000737:chemistry*; D003760:Dental Impression Materials / Q000737:chemistry*; D004202:Disinfectants / Q000009:adverse effects*; D020723:Glucuronic Acid / Q000737:chemistry; D006244:Hardness; D006245:Hardness Tests / Q000379:methods; D006603:Hexuronic Acids / Q000737:chemistry; D003765:Models, Dental
chemical_list: D000464:Alginates; D003760:Dental Impression Materials; D004202:Disinfectants; D006603:Hexuronic Acids; D020723:Glucuronic Acid