Accuracy of intraoral radiography, multidetector helical CT, and limited cone-beam CT for the detection of horizontal tooth root fracture

Masahiro Iikubo, Kaoru Kobayashi, Akira Mishima, Shinji Shimoda, Takayoshi Daimaruya, Chinami Igarashi, Masahiro Imanaka, Masao Yuasa, Maya Sakamoto, Takashi Sasano

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38 Citations (Scopus)

Abstract

Objective: The accuracies of intraoral radiography (IOR), multidetector helical computerized tomography (MDHCT) at slice thicknesses 0.63 mm and 1.25 mm, and limited cone-beam computerized tomography (LCBCT) were compared for detection of horizontal tooth root fracture. Study design: In 7 beagle dogs, 28 maxillary anterior teeth were used, of which 13 had artificially induced horizontal root fracture. The specimens were examined by the above-mentioned 4 modalities. Diagnosis of root fracture was based on direct visualization of radiolucent line in each image by 6 radiologists. Results: Sensitivity, negative predictive value, and diagnostic accuracy (true positives + true negatives) for detecting fracture lines in LCBCT (0.96 ± 0.04, 0.97 ± 0.03, 0.93 ± 0.04, respectively) were significantly higher than MDHCT at 0.63 mm (0.76 ± 0.09, 0.8 ± 0.05, 0.8 ± 0.05, respectively), MDHCT at 1.25 mm (0.49 ± 0.09, 0.66 ± 0.04, 0.69 ± 0.05, respectively), and IOR (0.51 ± 0.18, 0.67 ± 0.08, 0.69 ± 0.08, respectively). Specificity and positive predictive value showed no significant intermethod difference among the 4 modalities. Conclusion: Limited cone-beam CT is more useful than the other 3 radiographic modalities for diagnostic imaging of horizontal tooth root fracture.

Original languageEnglish
Pages (from-to)e70-e74
JournalOral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology
Volume108
Issue number5
DOIs
Publication statusPublished - 2009 Nov 1

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology
  • Dentistry(all)

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