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Cone-beam Computed Tomographic Analysis of Deciduous Root Canals after Instrumentation with Different Filing Systems:
Priyanka Singh1, Sonali Saha1, Abhay Mani Tripathi1
1Department of Pedodontics and Preventive Dentistry, Sardar Patel Post Graduate Institute of Dental Sciences, Lucknow, Uttar Pradesh, India.
Summary
Different filing systems for primary teeth root canals showed varied results. ProTaper Next files minimized canal transportation, while OneShape files offered the best centering ability. NiTi K hand files preserved dentin thickness, and WaveOne files reduced instrumentation time.
Area of Science:
- Pediatric Dentistry
- Endodontics
- Dental Materials
Background:
- Root canal instrumentation in primary teeth aims to remove infected pulp tissue while preserving tooth structure.
- Evaluating different NiTi (Nickel-Titanium) filing systems is crucial for optimizing pulpectomy procedures in primary teeth.
- Cone-beam computed tomography (CBCT) provides detailed 3D analysis of root canal morphology and instrumentation outcomes.
Purpose of the Study:
- To compare the effectiveness of four different NiTi filing systems (NiTi K files, ProTaper Next, OneShape, WaveOne) in primary teeth.
- To assess canal transportation, centering ability ratio (CAR), remaining dentin thickness (RDT), dentinal cracks, and instrumentation time.
- To determine the optimal filing system for pulpectomy in primary teeth using CBCT analysis.
Main Methods:
- Sixty primary teeth canals were instrumented using NiTi K files, ProTaper Next (PTN), OneShape (OS), or WaveOne (WO) files (15 canals per group).
- Pre- and post-instrumentation CBCT scans were performed to evaluate apical, middle, and cervical canal sections.
- Data on canal transportation, CAR, RDT, dentinal cracks, and instrumentation time were collected and statistically analyzed.
Main Results:
- ProTaper Next files exhibited the least canal transportation.
- OneShape files demonstrated the highest centering ability ratio (CAR).
- NiTi K hand files preserved the greatest remaining dentin thickness (RDT) and resulted in the fewest dentinal cracks.
- WaveOne files required the shortest instrumentation time.
Conclusions:
- Each filing system presents unique advantages for primary teeth pulpectomy.
- ProTaper Next and OneShape files offer benefits in maintaining canal shape and centering.
- NiTi K hand files are superior in preserving dentin thickness and minimizing cracks.
- WaveOne files are efficient in reducing chair time, which is advantageous for pediatric patients.
