Aim of study: To compare the cleaning effectiveness of manual,
rotary Flexmaster and hybrid (manual and Pro taper)
instrumentation techniques in primary molar teeth.
Material and Methods: Thirteen primary molars without external
resorption were s
elected. After endodontic access, the teeth were
injected with Indian-ink and divided into three groups.
Aim:
The aim of this study was to compare the weight of debris and irrigant that extruded
apically during the preparation of root canal system using standardized technique, hand
ProTaper, and rotary universal ProTaper.
Materials and Methods:
The
sample was consisted of 30 single rooted teeth, with single canal and apical
foramen, the working length was standardized and the access cavity prepared, each tooth
was fixed with ruper stopper in glass vial contains agar 1.5% to simulate the periapical
tissue. And the vial was fixed in a bigger vial to eliminate any unneccesry contact with the
apparatus. The first vial was weighted before and after preparation.
The sample was randomly divided into three groups, group A Standardized
technique, B Hand ProTaper PTH , C Universal ProTaper PTU.
Result:
The three techniques caused apically extruded debris and irrigants, with statically
significance between Standarized technique and Hand ProTaper(P= 0.024) while the first
caused more debris and irrigants extrusion, also Universal ProTaper caused more extrusion
than Hand ProTaper with statically significance (p= 0.050), but there was no significant
differences between Standarized technique and Universal ProTaper P>0.05.
Conclusion:
Under the condition of this study, it can be concluded that both hand and rotary
preparation technique will cause apical extrusion of debris and irrigants. And PTH was the
least causing of apically extrusion.