Long-term sealing ability of resin-based root canal fillings.
OBJECTIVE
To evaluate the ability of two resin-based filling materials to provide immediate and long-term sealing of the root canal.


METHODS
A total of eighty-two human roots were instrumented and filled with AH Plus/gutta-percha or Epiphany/Resilon. Root filled teeth were sealed coronally either with Coltosol or Clearfil SE Bond/Filtek Z250 or were left unsealed. The quality of root canal sealing was assessed by a fluid filtration method performed at immediate and 180-day time intervals. Mean fluid filtration rates were analyzed by three-way repeated measures anova and Tukey post hoc test.


RESULTS
Specimens filled with Epiphany/Resilon exhibited higher leakage than specimens filled with AH Plus/gutta-percha (P < 0.05), regardless of the coronal sealing condition and period of evaluation. No difference was detected between coronal restorative materials (P > 0.05), whilst leakage in teeth without any coronal restoration was significantly higher (P < 0.05). After storage, a significant decrease in leakage (P < 0.05) was observed in all experimental groups.


CONCLUSIONS
AH Plus/gutta-percha provided superior root canal sealing at both immediate and 180-day time periods. The presence of a coronal seal reduced leakage significantly. Storage of root filled specimens did not disturb the sealing ability of the tested materials.
Santos
J
J
Department of Restorative Dentistry, Endodontic Area, Piracicaba Dental School, State University of Campinas, Piracicaba, Brazil.
Tjäderhane
L
L
Ferraz
C
C
Zaia
A
A
Alves
M
M
De Goes
M
M
Carrilho
M
M
D003763:Dental Leakage / Q000517:prevention & control*; D018772:Dental Marginal Adaptation; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods; D003804:Dentin; D017220:Dentin-Bonding Agents / Q000737:chemistry / Q000627:therapeutic use; D004853:Epoxy Resins / Q000737:chemistry* / Q000627:therapeutic use; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D012387:Root Canal Filling Materials / Q000737:chemistry* / Q000627:therapeutic use; D013997:Time Factors
D017220:Dentin-Bonding Agents; D004853:Epoxy Resins; D012387:Root Canal Filling Materials; C486893:epiphany sealer; C534916:epoxy resin-based root canal sealer; C486892:resilon sealer; D006171:Gutta-Percha