Document Detail

Detection of bone invasion by gingival carcinoma of the mandible: a comparison of intraoral and panoramic radiography and computed tomography.
MedLine Citation:
PMID:  10578189     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To assess the diagnostic accuracy of panoramic radiography (PR), panoramic radiography combined with intraoral radiography (PR+IR), and CT in detecting the supero-inferior extent of tumor invasion of the mandible by gingival carcinoma. METHOD: PR, PR+IR, and CT images of the mandible in 37 patients with gingival carcinoma were evaluated by five oral radiologists for the supero-inferior extent of bone invasion using ROC analysis. The mean ROC curve area (Az) of each observer for the different imaging modalities was analysed by nonparametric two-way ANOVA. P<0.05 was considered statistically significant. RESULTS: The mean Az for the detection of bone invasion were 0.88+/-0.03 for PR, 0.77+/-0.12 for PR+IR, and 0.87+/-0.03 for CT (P=0.0907). The mean Az for the detection of bone invasion beyond the alveolus was 0.89+/-0.07 for PR, 0.85+/-0.08 for PR+IR, and 0.83+/-0.06 for CT (P=0.5438). The mean Az for the detection of bone invasion beneath the mandibular canal were 0.94+/-0.04 for PR, 0.94+/-0.02 for PR+IR, and 0.91+/-0. 04 for CT (P=0.2466). No statistically significant differences were observed in Az between PR, PR+IR, and CT. CONCLUSION: We consider that PR+IR should be adopted as the initial imaging modality to determine the extent of supero-inferior invasion of the mandible in gingival carcinoma.
E Nakayama; K Yoshiura; K Yuasa; O Tabata; K Araki; S Kanda; S Ozeki; M Shinohara
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Controlled Clinical Trial; Journal Article    
Journal Detail:
Title:  Dento maxillo facial radiology     Volume:  28     ISSN:  0250-832X     ISO Abbreviation:  Dentomaxillofac Radiol     Publication Date:  1999 Nov 
Date Detail:
Created Date:  2000-07-05     Completed Date:  2000-07-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7609576     Medline TA:  Dentomaxillofac Radiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  351-6     Citation Subset:  D    
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Kyushu University, Fukuoka, Japan.
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MeSH Terms
Analysis of Variance
Carcinoma, Squamous Cell / pathology*,  radiography
Gingival Neoplasms / pathology*
Mandibular Neoplasms / pathology*,  radiography*
Neoplasm Invasiveness / radiography*
Photography, Dental
ROC Curve
Radiography, Panoramic
Reproducibility of Results
Sensitivity and Specificity
Statistics, Nonparametric
Tomography, X-Ray Computed

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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