Apical micro leakage evaluation using Reciproc and WaveOne files

This research aimed to evaluate the apical seals of root canals prepared with WaveOne and Reciproc files utilizing either the rotary or reciprocating preparation techniques. Materials and methods. Sixty human single-rooted premolar (bicuspid) teeth were prepared and randomly divided into 4 groups which received different preparations: WaveOne files using rotary and reciprocating techniques and Reciproc files using rotary and reciprocating techniques. Single-cone technique was used for the obturation of the teeth, with zinc oxide eugenol sealer. The apical seals were evaluated using a dye penetration technique. The degree of micro leakage was assessed via measurement stereomicroscope (mag. 10x). Results. There is a significant difference between all groups in the extent of micro leakage (p<0.05). The mean value of WaveOne file reciprocation group (0.73 μm) is lower than that of WaveOne file rotation group (2.39 μm), and the mean value of Reciproc file reciprocation group (0.71 μm) is lower than that of Reciproc file rotation group (2.42 μm). There is a significant difference between the measurements for the groups with reciprocation movement and rotational movement (between Group 1 and Group 2 and between Group 3 and Group 4), at p<0.05. Conclusion. Using either WaveOne or Reciproc files, much lower apical micro leakage resulted when applying the reciprocation method compared to the rotary technique.