Microcomputed tomographic evaluation of shaping ability of two thermo mechanically treated single-file systems in severely curved roots

Influence of two kinematics on canal transportation and centering ability of WaveOne Gold and One Curve files

“…For centering ability, the outcomes of this study are consistent with those of earlier studies [24,26]. Compared to variable tapered instruments, several studies indicated that constant tapered instruments exhibited good centering ability in the apical region of curved roots [27, 28].…”

“…These discrepancies were most likely noticed since, at this point of the canal curvature, critical alterations in the relationship between diameter and flexibility led to a higher stress level on the instrument [23]. Possible causes include the WOG file's 7% taper and greater core diameter than the OC file, with a fixed taper of 6% along its length [24], the core diameter of WOG is (148,186 ± 7409 μm 2 ) at D5 as compared to the core diameter of OC is (about 48,327 μm 2 ) at D5, which revealed the lowest cross‐sectional area [6, 25]. This finding agrees with Kolhe et al., and Bal et al., [24, 26].…”

“…Possible causes include the WOG file's 7% taper and greater core diameter than the OC file, with a fixed taper of 6% along its length [24], the core diameter of WOG is (148,186 ± 7409 μm 2 ) at D5 as compared to the core diameter of OC is (about 48,327 μm 2 ) at D5, which revealed the lowest cross‐sectional area [6, 25]. This finding agrees with Kolhe et al., and Bal et al., [24, 26].…”

Shaping ability of rotary and reciprocating single-file systems in combination with and without different glide path techniques in simulated curved canals

“… 31 , 32 On the other hand, OC rotary file showed less canal transportation and better canal centering ability than WaveOne Gold file (Dentsply Sirona) during the preparation of severely curved canals. 33 , 34 Furthermore, the variable cross-sections of OC with a triangular-shaped at the tip of the instrument and S-shaped near the shaft are claimed to allow effective cutting and centered trajectory. 35 Concerning the influence of kinematic characteristics on the shaping ability of instruments, conflict results were obtained from previous studies.…”

Conservative shaping combined with three-dimensional cleaning can be a powerful tool: Case series

“…Once these areas have been cleaned, they can be filled and obturated with gutta-percha and sealer during the obturation phase. [ 24 25 26 ]…”