Effect of iterative restoration on the detection of artificially induced vertical radicular fractures by Tuned Aperture Computed Tomography.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
; 96(1): 118-25, 2003 Jul.
Article
em En
| MEDLINE
| ID: mdl-12847454
ABSTRACT
OBJECTIVE:
The purpose of this study was to evaluate the effect of the number of iterative restorations (IR) on the diagnostic accuracy of Tuned Aperture Computed Tomography images (TACT) for detection of induced vertical/oblique root fractures in mandibular teeth. STUDYDESIGN:
Fractures were induced in 28 single-rooted, endodontically treated cadaver mandibular teeth while another 26 such teeth served as controls. TACT slices reconstructed by using 9 arbitrary projections (angular disparity of 9 degrees -20 degrees) were iteratively restored 1, 2, and 3 times. Eight observers scored their diagnoses by using a confidence rating scale. Ground truth was available from direct examination with transillumination, following extraction.RESULTS:
Mean areas under the representative ROC curves for the 3 operations were 0.96 (3 IRs), 0.87 (2 IRs), and 0.86 (1 IRs). Analysis of variance demonstrated significant differences between 3 and 1 to 2 IRs (P <.01), as well as between observers (P <.01).CONCLUSION:
Diagnostic accuracy of TACT for vertical/oblique root fracture detection improved after 3 IRs.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fraturas dos Dentes
/
Radiografia Dentária
/
Tomografia Computadorizada por Raios X
/
Dente não Vital
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article