Journal
INTERNATIONAL ENDODONTIC JOURNAL
Volume 41, Issue 7, Pages 561-570Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2591.2008.01398.x
Keywords
Australia; endodontics; radiographic interpretation; root canal treatment; specialist; technical quality
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Aim To investigate the technical quality of nonsurgical root canal treatment performed by endodontists in Melbourne, Australia. Methodology Clinical and radiographic records of 100 sequential nonsurgical patients were obtained from each of six endodontists working in private practice. The following variables were analysed: proximity of root filling to radiographic apex; homogeneity and radiodensity of root filling; lateral adaptation of the root filling to the canal walls; taper; extrusion of material; small, appropriate or excessive apical enlargement; presence of lateral canals; transportation; procedural errors. The radiographs were assessed by three independent evaluators. Exploratory data analysis was undertaken using simple frequencies and cross-tabulations. A generalised linear mixed model (GLMM) was used for the formal statistical modelling. Results Of the 1351 canals that were examined, 91.7% were filled within 2 mm of the radiographic apex and 74% were within 1 mm. Homogeneity and adequate density were found along the entire length of the canal in 86.1% and 88.6% of cases respectively. Lateral adaptation was adequate in 95.6% of cases and the taper was 'smooth and continuous' in 83.8% of roots. No and/or small extrusion of sealer was noted in 98.3% of cases. Apical enlargement was 'appropriate' in 85% of roots. Both transportation (1.1%) and procedural errors (1.3%) were rare occurrences. Conclusions The technical quality of root fillings performed by endodontists in Melbourne, Australia complied with current guidelines in 77.4%-91.0% of roots. All variables examined confirmed high levels of technical proficiency. There were very few instances of canal transportation and/or procedural errors.
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