2015 Volume 58 Issue 4 Pages 265-272
Purpose: Root canal shaping by nickel-titanium (Ni-Ti) is one of the most important steps in creating a glide path. However, it is not easy to control the original canal shaping by a manual glide path. The ProGlider single-file system (Dentsply Maillefer, Switzerland) was recently introduced for performing a mechanical glide path. This study was designed to analyze the shaping ability by ProGlider, and also evaluate the influence of canal shaping with WaveOne (Dentsply Maillefer) and ProTaper Next (Dentsply Maillefer) after shaping the glide path.
Methods: Sixty Endo Training block canals (Dentsply Maillefer) were used, divided according to the glide path system and Ni-Ti rotary system used for canal preparation into 6 groups of 10 samples each: K-file, ProGlider, K-file & WaveOne, ProGlider & WaveOne, K-file & ProTaper Next, ProGlider & ProTaper Next groups. Canal transportations were assessed by comparing the pre-instrumentation and post-instrumentation images under an Olympus ZX16 with DP71 digital camera, and the superimposed images were analyzed using WinROOF. Data were statistically analyzed with the significance level set at p<0.05.
Results: The glide path of ProGlider exhibited a significantly lower mean of canal transportation than manual K-File. It was shown that significantly lower deviation occurred by ProGlider & WaveOne than K-file & WaveOne. There was no significant difference between the K-file & ProTaper Next and ProGlider & ProTaper Next groups in canal transportation (p<0.05).
Conclusions: This study confirmed the ability of ProGlider to reduce transportation, and the WaveOne and ProTaper Next Ni-Ti system can yield better performance with fewer problems compared with instrumentation performed with K-file.
