Impact of Instrumentation Technique on Endodontic Treatment Quality in Curved Molars: A Retrospective Analysis
This cross-sectional study evaluated technical failures in root canal treatments (RCTs) of curved molars (> 10°) performed by undergraduate students and their association with instrumentation techniques. Evaluations included filling extension, density, taper and ledge/zip formation. Bivariate analysis (chi-square, 5% significance) calculated odds ratios (OR) and 95% confidence intervals (CI). Among 188 RCTs, manual instrumentation had higher risks of ledge/zip formation, inadequate density, taper and underfilling, while reciprocating techniques showed more overfilling. Root curvature did not influence failure rates. The study showed 100% power for detecting underfilling, inadequate density and taper; 97.98% for overfilling and 71.11% for ledge/zip formation. Instrumentation technique significantly impacted failure frequency, with manual techniques associated with more complications.
Authors
- Tatiana Pereira‐Cenci (ORCID: https://orcid.org/0000-0002-5166-8233)
- Carolina Clasen Vieira (ORCID: https://orcid.org/0000-0003-4429-4760)
- Fernanda Geraldo Pappen (ORCID: https://orcid.org/0000-0002-8483-455X)
- Katerine Jahnecke Pilownic (ORCID: https://orcid.org/0000-0003-4643-8879)
- Daiana Elisabeth Böttcher (ORCID: https://orcid.org/0000-0002-6158-8384)
- Fábio de Almeida Gomes (ORCID: https://orcid.org/0000-0003-0066-6729)
- Erick Miranda Souza (ORCID: https://orcid.org/0000-0003-2074-0834)
- Luciéli Andréia Zajkowski (ORCID: https://orcid.org/0000-0002-1533-5490)
- Patrícia Maria Poli Kopper (ORCID: https://orcid.org/0000-0002-2514-6036)
- Daniele Assumpção Prado
Institutions
- Universidade Federal do Rio Grande do Sul (BR)
- Universidade Federal de Pelotas (BR)
- Universidade de Fortaleza (BR)
- Pontifícia Universidade Católica do Rio Grande do Sul (BR)
- Universidade Federal do Maranhão (BR)
Publication Details
- Journal
- Australian Endodontic Journal
- Published
- 2025-05-26
- DOI
- https://doi.org/10.1111/aej.12952
- Primary Topic
- Endodontics and Root Canal Treatments
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior