Abstract:
The use of bioceramic sealers may, on occasion, complicate
endodontic retreatment. This is due to their hard setting
nature as well as adherence to root dentine which makes
them more challenging to dislodge from root canals.
Aim
The aim of this in vitro study was to determine the
retreatability of root canals sealed with a bioceramic calcium
silicate-based sealer cement.
Materials and Methods
120 permanent human single rooted teeth were selected
for the study. After working length and apical patency
determination, the teeth were prepared using iRace™ Ni-Ti
rotary files. Teeth were divided into four groups (n=30) and
obturated as follows:
• Group 1: TotalFill BC™ points and TotalFill BC™
sealer with the master GP at WL using basic hydraulic
technique
• Group 2: TotalFill BC™ points and TotalFill BC™ sealer
with the master GP 3mm short of WL using basic
hydraulic technique
• Group 3: GP and AH Plus™ with the master GP at WL
using lateral condensation technique
• Group 4: GP and AH Plus™ with the master GP 3mm
short of WL using lateral condensation technique
• D-Race™ retreatment files and Endosolv™ was used
to remove obturation material.
Results
The Kruskal-Wallis H test, pairwise and comparison
between groups showed that the type of sealer cement
and the working length influenced both the retreatability
of the canal and retreatment time. The differences were
statistically significant (p < 0.005) at a 95% CI.
Conclusion
Fully extended GP will guarantee a passage for retreatment
instruments to the apical area of the canal. The sealer and
GP application technique during obturation should allow for
full extension of the GP within the canal. Improper use of
bioceramic sealers diminishes the chances of successful
retreatment.
