Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie | 2021
Ex vivo assessment of the buccal and oral bone by CBCT.
Abstract
PURPOSE\nIdentifying buccal and oral bone as an important supporting periodontal structure for teeth provides important information for treatment planning in periodontics and orthodontics. This study aims to add evidence to the knowledge of preciseness of cone beam computed tomography (CBCT) measurements of the vertical dimension of buccal and oral bone. The hypothesis is that CBCT is an accurate and reliable method to measure vertical vestibular and oral bone loss.\n\n\nMETHODS\nThe amount of vertical buccal and oral bone loss (bl) of 260 sites of 10\xa0human cadavers was investigated clinically and radiographically by CBCT. Radiographic measurements were rated by two blinded raters. Measurements and the corresponding differences between clinical and radiological findings are described by medians and quartiles (Q1-Q3). For statistical analysis, Lin s concordance correlation coefficient (CCC) and Bland-Altman plots were calculated.\n\n\nRESULTS\nThe CCC between the raters was 0.994 (95% confidence interval 0.992-0.995). The median bone loss (bl) distance from the cementoenamel junction (CEJ) to the bony defect (BD) was 3.5\u202fmm (range 3-5\u202fmm). The median bl measured in the CBCT was 3.8\u202fmm (range 3.1-4.8\u202fmm). The median difference of the 2\xa0measurements for all sites included in the study (N\u202f=\u2009260) was -0.2\u202fmm (-0.7 to 0.3\u202fmm).\n\n\nCONCLUSIONS\nCBCT seems to be an accurate and highly reliable method to detect and describe vertical buccal and oral bone loss. It could improve planning and prediction for successful combined periodontal and orthodontic therapies.