Procedural errors during root canal preparation using rotary NiTi instruments detected by periapical radiography and cone beam computed tomography
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Data
2010
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Resumo
This study detected procedural errors created by rotary nickel-titanium (NiTi) instruments during root canal preparation by two
imaging methods. Forty extracted human maxillary and mandibular molars were divided randomly into two groups and treated by
two endodontists (n=10) and two undergraduate dental students (n=10). The ProTaper UniversalTM Rotary System was used to shape
the canals and then they were filled using AH Plus TM sealer and gutta-percha. Periapical radiographs (PR) and cone beam computed
tomography (CBCT) images were obtained and two examiners, who evaluated them to verify the occurrence of procedural errors
(fractured instruments, perforations, and canal transportation). The Chi-square test at 0.05 level of significance was used for statistical
analyses. There were no significant differences (p>0.05) between the imaging methods. In the analysis of procedural errors, there was
no significant difference (p>0.05) between the groups of operators (endodontists vs. students) nor between tooth groups (maxillary
molars vs. mandibular molars). In view of the low incidence of procedural errors during root canal preparation performed by students
the introduction of rotary NiTi instruments has potential in undergraduate teaching. PR and CBCT permitted the detection of procedural
errors, but the CBCT images offer more recourse for diagnosis.
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Nickel-titanium, Cone beam computed tomography, Rotary instruments, Dental education, Root canal preparation
Citação
ALENCAR, Ana Helena Gonçalves de et al. Procedural errors during root canal preparation using rotary NiTi instruments detected by periapical radiography and cone beam computed tomography. Brazilian Dental Journal, Ribeirão Preto, v. 21, n. 6, p. 543-549, 2010.