Comparison of apically extruded debris of different nickel titanium instruments


  • Dr. Diyar Kh. Bakr



Key words: Apically extruded debris, ProTaper Next, One Shape, Mani Silk, Rotary file.


Background and objective: During root canal instrumentation irrigants, necrotic
pulp tissue, microorganism and dentin debris may be extruded beyond the apex
into the periradicular tissue. These extrusions may cause flare-up. The purpose of
this study was to compare the amount of apically extruded debris with three rotary
Nickel titanium instruments.
Methods: Sixty single rooted, single canalled premolars were selected. The roots
were divided randomly into three groups; (n = 10) according to the type of
instrumentation system used, group 1“ProTaper Next” system, group 2 “One
Shape” system and group 3 “Mani Silk” system. The Debris extruded during the
instrumentation was collected and dried in preweighed vials and the amount of
extruded debris was assessed with an electronic balance.
Result: results showed that the Mani silk system extruded significantly less debris
than the ProTaper Next and One shape systems (P < .05), and there is no
significant difference in apically extruded debris between ProTaper Next group
and One Shape group but the One Shape produced more debris than ProTaper
Conclusion: the Mani silk file instrument was behaved well during instrumentation
and extruded less debris than the other groups.




How to Cite

Bakr, D. D. K. (2018). Comparison of apically extruded debris of different nickel titanium instruments. Mustansiria Dental Journal, 14(1), 16–23.



E ndodontics, Fixed Prosthesis & Operative Dentistry