Comparison of Shaping Ability of Different Single-File Systems Using Microcomputed Tomography

Area of Science:

• Endodontics
• Dental Materials Science
• Biomaterials

Background:

• Root canal preparation aims to clean and shape the canal space.
• Single-file systems offer efficiency but their shaping abilities vary.
• Micro-computed tomography (micro-CT) is a valuable tool for evaluating root canal preparation.

Purpose of the Study:

• To compare the shaping ability of four single-file systems: WaveOne Gold, RECIPROC Blue, HyFlex EDM, and One Shape.
• To evaluate canal centering, transportation, and volumetric changes using micro-CT.

Main Methods:

• Eighty mandibular molars were divided into four groups (n=20) for each file system.
• Micro-CT scans were performed before and after instrumentation.
• Statistical analysis using one-way ANOVA was conducted (α = 0.05).

Main Results:

• No significant differences in centering or transportation at coronal and middle levels.
• WaveOne Gold exhibited better centering and less transportation at the apical level (p < 0.05).
• HyFlex EDM showed significantly greater volumetric change at the coronal level (p < 0.05).

Conclusions:

• WaveOne Gold provides superior apical preparation in terms of centering and transportation.
• File design significantly influences performance within the root canal.
• HyFlex EDM's design resulted in more coronal volumetric alteration.