title: [Comparative study of three materials used for filling perforations made during intra-radicular dowel preparation].
abstract: Fifteen extracted human teeth were used in which after root canal treatment post preparation was made. During this preparation the middle third of the roots was perforated intencionally. These perforations were filled with three different materials: Silver amalgam, Lumicon, N-Richert Cement, associated in five groups (Lumicon; Lumicon Plus Silver Amalgam; N-Rickert Cement; N-Rickert Cement Plus Amalgam; Silver Amalgam). After this, the teeth were prepared for S.E.M. analysis. The photomicrographics were analysed by 20 observators with the purpose to the determine the filling of the material on the borders of the cavity. The best results were achieved with Lumicon Plus Silver Amalgam.
authors.forename: C E
authors.initials: CE
authors.lastname: Aun
authors.forename: V de C
authors.initials: Vde C
authors.lastname: Rodrigues
authors.forename: G J
authors.initials: GJ
authors.lastname: Debelian
authors.forename: A A
authors.initials: AA
authors.lastname: de Moura
mesh_terms: D003188:Composite Resins; D003442:Crowns / Q000009:adverse effects*; D003723:Dental Amalgam; D003738:Dental Cements; D006801:Humans; D008854:Microscopy, Electron; D011176:Post and Core Technique / Q000009:adverse effects*; D019279:Resin Cements; D012387:Root Canal Filling Materials
chemical_list: D003188:Composite Resins; D003738:Dental Cements; D019279:Resin Cements; D012387:Root Canal Filling Materials; D003723:Dental Amalgam; C061083:Lumicon
vernacular_title: Estudo comparativo entre três materiais utilizados no preenchimento das perfurações provocadas durante o preparo para retentor intra-radicular.