ArticleBMC oral health2025
Evaluation of two instrumentation techniques and obturation methods in mandibular first premolar C-shaped canals by Micro-CT.
Article in BMC oral health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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Who cites it
5 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Comparative evaluation of obturation techniques for C-shaped canals: a network meta-analysis.Frontiers in dental medicine · 2026Pooled it
- Assessing the diagnostic performance of MediXpar texture analysis for C-shaped canal morphology on panoramic radiographs: a pilot study.Clinical oral investigations · 2026Article
- Single-Cone vs. Carrier-Based Root Canal Obturation with a Calcium-Silicate-Based Sealer: An In Vitro µ-CT Analysis.Biomimetics (Basel, Switzerland) · 2026Article
- Challenges in long-oval canal cleaning: effects of instrumentation kinematics and ultrasonic irrigation.Brazilian dental journal · 2026Article
- Exploration of uninstrumented areas and volumetric precision of ProTaper Ultimate versus ProTaper Next file systems: A micro-computed tomography study.Journal of conservative dentistry and endodontics · 2025Article
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Authors and funding
7 authors.
Funding
Abstract
objectivesTo investigate the effectiveness of instrumentation using Protaper Next (PN; Dentsply Sirona, Maillefer, Ballaigues, Switzerland) and Waveone Gold (WG; Dentsply Sirona, Maillefer, Ballaigues, Switzerland) systems on the area of untouched surface (US), accumulated hard tissue debris (AHTD), and the filling ability of two obturation techniques on the volume percentage (vol%) of voids within C-shaped root canals of mandibular first premolars.
methodsA total of 64 mandibular first premolars with C-shaped canals were scanned, matched, and subsequently assigned to two shaping groups (n = 32): PN and WG. After instrumentation, the specimens were randomly allocated into two obturation subgroups (n = 16): continuous wave compaction (CWC) and single-cone (SC) techniques. The US% and AHTD% post- instrumentation, as well as the vol% of voids after obturation, were calculated from micro-computed tomography. Data were analyzed using comparisons for two groups (PN vs. WG) or two subgroups (CWC vs. SC) at α = 0.05.
resultsThe untouched canal wall area was 18.75% and 22.69% in the PN and WG groups (p > 0.05), respectively. The apical third had higher US% than the coronal third (p < 0.05) in the two shaping groups. Instrumentation with WG left more debris (26.48%) than PN (8.36%) in the apical 1-3 mm (p < 0.05). In PN and WG group, the vol% of voids had no significant difference between the CWC and SC subgroups (p > 0.05). The apical region had significantly more voids than the coronal region of canal space in the two obturation subgroups regardless of which system was applied (p < 0.05).
conclusionsBoth PN and WG systems showed similar performance on US after instrumenting C-shaped canals of the mandibular first premolar. WG left significantly more AHTD compared with PN in the apical region. In PN or WG group, SC yielded similar obturation quality when compared with CWC. Both CWC and SC obturation techniques provided inferior filling quality in the apical region than that observed in the coronal region.
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