Retreatability of different endodontic sealers using chemical solvents
Available online 19 September 2015
Abstract
Objectives
The
aim of this study was to evaluate the efficacy of removal of different
sealers using ProTaper Retreatment System applying different solvents.
Methods
Root
canals in 135 single-rooted teeth were instrumented and obturated with
gutta-percha using one of the following sealers (n = 45): group A; MTA
Fillapex sealer, group B; AH Plus and group C; Endofill sealer. After
one month, the root canals were retreated with a rotary retreatment
system; ProTaper Universal Retreatment kit using different solvents
according to the subgroups: (n = 15) subgroup D; DMS IV, subgroup E;
EndoSolv R and subgroup N; no solvent was used. Roots were split
longitudinally, canals were observed using a stereomicroscope at 20×.
The images were subjected to morphometric analysis to assess the amount
of remaining root filling material. Statistical analysis was performed
by two way ANOVA and Student–Newman Keuls post-hoc test was done for
pair-wise comparison.
Results
Group
B showed significantly (P = 0.004) higher values of residual root
filling material than groups A & B in case of no-solvent use
(subgroup N). During the use of EndoSolv R (subgroup E), no significant
difference (P = 0.34) was found between all groups. However, with use of
DMS IV (subgroup D), Group B recorded the highest significant value
followed by group A then the group C.
Conclusions
Resin
solvent was efficient in removal of resin and MTA based sealers while
DMS IV is only beneficial with removal of zinc oxide and eugenol based
sealers.
Comments