Apical Transportation of WaveOne File with Full-Rotation vs. Reciprocation Movement

Methods: According to the type of instrument movement, mesiobuccal canal of thirty mandibular molars were divided into 2 groups (n=15): Group 1, Reciprocation/WaveOne; Group 2, Full-Rotation/WaveOne. After coronal access preparation, a #15 K-file was used for working length determination (1 mm short of apical foramen). Pre- and post-instrumented CBCT scans were used for assessment of apical transportation and centering ability (1 mm, 3 mm, and 5 mm short of WL) in both groups. Statistical analysis of the data was performed using Man-Whitney, Friedman and T-test (α=0.05).

Results: There was no statistically significant difference between the two experimental groups in terms of apical transport and centering ratio at 1, 3, and 5 mm level (P>0.05). Preparation time and practitioner's convenience were not significantly different between the two groups (P>0.05). No separation of instruments occurred in either groups.

Conclusions: Apical transportation and centering ability of WaveOne reciprocating instrument did not significantly differ between Reciprocation and Full Rotation movement.