Sealing ability of cements in root canals prepared for intraradicular posts.
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.
Nakamura
Dirce Haruko
DH
Bauru Dental School, University of São Paulo, Brazil.
Garcia
Roberto Brandão
RB
Bramante
Clóvis Monteiro
CM
de Moraes
Ivaldo Gomes
IG
Bernadineli
Norberti
N