EFFECT OF TYPE OF MOTION ON TORQUE GENERATED INTRA-CANALLY (IN VITRO STUDY)

RAID FAHIM  SALMAN

doi:10.26682/sjuod.2022.25.2.47

RAID FAHIM SALMAN College of Dentistry, Hawler Medical University, Kurdistan Region-Iraq

DOI: https://doi.org/10.26682/sjuod.2022.25.2.47

Keywords: Intra-canal torque, Rotary endodontic instruments, Reciprocation motion

Abstract

Objective: To measure cumulative torque values generated during different types of motions during instrumentation by rotary files.

Method: Forty extracted human premolar teeth with single canal have been utilised, instrumentation was performed with a single-file procedure with tip end no. 25 and taperness of 6% by two groups of files; Protaper Gold and Wave One Gold. Each group was subdivided into two subgroups; Group A (10 in no.) set at 2.5 N.cm². Group B (10 in no.) set at 1 N.cm² using an endodontic motor. A software has been used for precise torque measurements of range of 0.05 N.cm² for every 30 seconds.

Results: The t test showed a highly significant difference between groups 1A and 2A (p≤.01). Cumulative torque also showed non-significant differences by the groups 1B and 2B, (p≥.05) (Table 2).

Conclusion: At high torque setting, the preparation mode was affected by cumulative torque values whereas the same comparison was neutral at low torque control motor

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