Diagnostic accuracy of CBCT for periodontal lesions.
OBJECTIVE
The present study compares the diagnostic value of periodontal bone defect images using conventional two-dimensional single-tooth radiographs and three-dimensional cone beam computed tomography (CBCT) images.


METHODS
Classified periodontal bone defects were prepared on pig mandibles and presented radiographically. Fifteen dentists were instructed to make a diagnosis based on these x-rays, regarding the type and the extent of the bone defects. Subsequently, the results were evaluated and compared to the morphology of the surgically prepared defects as the gold standard.


RESULTS
On average, the diagnosis of infrabony defects were 21 %, dehiscence 25 %, and fenestration 33 % more accurate using the three-dimensional projection than with the single-tooth radiograph. Furthermore, the CBCT allows grade II furcation to be captured more accurately.


CONCLUSIONS
The results of this study indicate that a considerably more precise analysis of periodontal defects is possible due to the third dimension. Particularly, in the oro-vestibular orientation, defects could be detected significantly more accurate.


CONCLUSIONS
CBCT images offer an advantageous alternative to the conventional single-tooth radiograph while taking the higher exposure of radiation into account.
Department of Periodontology, Operative and Preventive Dentistry, School of Dentistry, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany.
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X
Braun
Department of Craniomaxillofacial and Plastic Surgery and Interdisciplinary Outpatient Department of Oral Surgery and Implantology, University of Cologne, Kerpener Str. 62, Cologne, 50924, Germany.
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Ritter
Department of Periodontology, Operative and Preventive Dentistry, School of Dentistry, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany.
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PM
Jervøe-Storm
Department of Periodontology, Operative and Preventive Dentistry, School of Dentistry, University of Bonn, Welschnonnenstr. 17, 53111, Bonn, Germany. frentzen@uni-bonn.de.
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Frentzen
D000818:Animals; D054893:Cone-Beam Computed Tomography / Q000592:standards*; D008334:Mandible / Q000000981:diagnostic imaging; D010510:Periodontal Diseases / Q000000981:diagnostic imaging*; D013552:Swine