Abstract:
Aim Apical extrusion of debris in primary root canal
treatment has not been well elucidated. The purpose
of this study is to compare the amount of apically
extruded debris during the preparation of primary
molar root canals using ProTaper, ProTaper Next, Self adjusting File (SAF) and hand files.
Methods One hundred sixty extracted primary
mandibular molar teeth were assigned to 2 groups:
Group 1: Resorbed (n=80) and Group 2: Non resorbed (n=80) and randomly to four subgroups
(n=20 teeth for each subgroup) according to the
instruments used, ProTaper, ProTaper Next, SAF, and
hand file. The apically extruded debris was collected
and dried in preweighed Eppendof tubes. The dry
weight was calculated by subtracting the preoperative
weight from the postoperative weight. Statistics: Data
were analysed statistically using the ANOVA and the
Bonferroni post hoc t-test.
Results The amount of apically extruded debris was
significantly less for the non-resorbed group compared
to the resorbed group (P<0.05). Regardless of the
resorption groups, ProTaper Next and SAF extruded
significantly less debris than did the ProTaper and
hand files (P<0.05), while no statistically significant
difference was found between ProTaper Next and SAF
(P>0.05).
Conclusion All instruments caused apically extruded
debris in primary teeth.
