Comparison of the burr and chemically induced periodontal defects using different field-of-view sizes and voxel resolutions.

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Comparison of the burr and chemically induced periodontal defects using different field-of-view sizes and voxel resolutions.

Oral Surg Oral Med Oral Pathol Oral Radiol. 2017 Nov 23;:

Authors: Bagis N, Eren H, Kolsuz ME, Kurt MH, Avsever H, Orhan K

Abstract
OBJECTIVE: This study assessed the use of different voxel resolutions in a cone beam computed tomography (CBCT) unit for the detection of artificially induced periodontal bone defects created using burr, burr and chemicals, and only chemicals.
STUDY DESIGN: Seven dry skulls were used in this study. In total, 65 dehiscence defects, 43 fenestration defects, and 76 control sites with no periodontal defects were examined. Images were obtained from a CBCT unit (3 D Accuitomo; J Morita Mfg. Corp., Kyoto, Japan), using 3 field-of-view (FOV) sizes (4 × 4 cm; 6 × 6 cm; and 8 × 8 cm) and 4 scan modes (standard, high-definition, high-fidelity, and low-dose).
RESULTS: Overall, κ coefficients for interobserver agreement on burr-induced periodontal defects ranged from 0.336 to 0.795, with the lowest κ value (indicating a fair degree of agreement) obtained for images acquired in standard mode with a voxel size of 0.160 mm3. κ coefficients for the detection of periodontal defects were highest (indicating moderate to high degrees of interobserver agreement) for smaller voxel sizes and high-resolution images. Statistical comparison among groups (burr, burr + chemicals, and chemicals only) was performed using 1-way analysis of variance with post hoc tests.
CONCLUSIONS: The CBCT scan mode may affect the diagnosis of periodontal defects. The technique used to create periodontal defects also affected diagnosis. For this kind of experiment, burr-induced or burr + chemical-induced defects should be used, rather than those induced solely using a chemical technique.

PMID: 29273196 [PubMed - as supplied by publisher]

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