title: Sealing ability of cements in root canals prepared for intraradicular posts.
abstract: This research evaluated the sealer ability of 2 temporary filling materials (white Cimpat and IRM) and 1 restorative cement (glass ionomer), in canals prepared for root posts. Sixty human palatal roots of maxillary first molars were used. They were divided into 3 groups, according to the cements used: Group I (Cimpat), Group II (IRM) and Group III (glass ionomer). The roots were rendered impermeable, filled with the respective cements and soon after immersed into 0.2% Rhodamine B dye and maintained for 72 hours in an oven for 37 degrees C. Microleakage was measured with a light microscope, cutting the roots longitudinally in buccolingual direction. The results showed that Group I presented significantly more leakage than Groups II and III, which were not significantly different from each other.
authors.affiliation: Bauru Dental School, University of São Paulo, Brazil.
authors.forename: Dirce Haruko
authors.initials: DH
authors.lastname: Nakamura
authors.forename: Roberto Brandão
authors.initials: RB
authors.lastname: Garcia
authors.forename: Clóvis Monteiro
authors.initials: CM
authors.lastname: Bramante
authors.forename: Ivaldo Gomes
authors.initials: IG
authors.lastname: de Moraes
authors.forename: Norberti
authors.initials: N
authors.lastname: Bernadineli