Ex vivo evaluation of coronal and apical microbial leakage of root canal--filled with gutta-percha or Resilon/Epiphany root canal filling material.
OBJECTIVE
This ex vivo study compared coronal and apical microleakage of root canals filled with Resilon/Epiphany (RE) or gutta-percha/Grossman sealer (GP), using either lateral condensation (LC) or System B (SB) technique.


METHODS
Specimens in eight experimental groups were obturated using the following materials and techniques: Groups 1 and 3--GP and LC; groups 2 and 4--GP and SB; groups 5 and 7--RE and LC; groups 6 and 8--RE and SB. Apical and coronal leakages were tested using bacterial methods. For coronal analysis, the number of days required for complete contamination of the root canals was recorded according to observation of the brain heart infusion broth turbidity for 15 weeks. For apical analysis, the teeth were cleaved and the leakage was measured at 30 days. Data were collected for each sample and analyzed statistically with the Chi-square and ANOVA tests.


RESULTS
Leakage was found in all groups. The difference between filling materials, obturation techniques, and median time of leakage was not statistically significant for coronal ( P=0.847) and apical ( P=0.5789) leakages.


CONCLUSIONS
There were no differences between the different filling materials (gutta-percha/Grossman sealer and Resilon/Epiphany) and obturation techniques (lateral condensation and system B technique) in coronal or apical leakages.
de Almeida-Gomes
Fabio
F
Department of Endodontics, University of Fortaleza, Brazil.
Maniglia-Ferreira
Claudio
C
de Morais Vitoriano
Marcelo
M
Carvalho-Sousa
Bruno
B
Guimaraes
Nadine Luisa Soares de Lima
NL
dos Santos
Roberto Alves
RA
Gurgel-Filho
Eduardo Diogo
ED
Rocha
Marcia Maria de Negreiros Pinto
MM
D000704:Analysis of Variance; D001641:Bicuspid; D016009:Chi-Square Distribution; D003763:Dental Leakage / Q000517:prevention & control*; D006171:Gutta-Percha; D006801:Humans; D008954:Models, Biological; D012387:Root Canal Filling Materials; D012389:Root Canal Obturation / Q000379:methods*; D016369:Smear Layer; D015035:Zinc Oxide-Eugenol Cement
D012387:Root Canal Filling Materials; D015035:Zinc Oxide-Eugenol Cement; C486893:epiphany sealer; C486892:resilon sealer; C045432:Grossman's sealer; D006171:Gutta-Percha