In vitro comparison of high-resolution USG, CBCT, and direct measurements of periodontal defects
Tayman M.A. Kamburoglu K.I. Cakmak E.E. Özen D.
1 September 2025Oxford University Press
Dentomaxillofacial Radiology
2025#54Issue 6437 - 445 pp.
Objectives To compare the accuracy of cone-beam CT (CBCT), ultrasonography (USG) and direct measurements in linear dimensions of periodontal defects on the buccal alveolar surfaces of mandibular sheep teeth. Methods A total of 88 defects were artificially created, including dehiscence, fenestration, grade I and II endodontic-periodontal defects. Two observers performed measurements twice. Maximum length, depth, and width of the defects were measured with all 3 methods. Manual measurements were accepted as the gold standard. Intraclass correlation coefficients (ICC) were calculated. The mean value of the measurements, the bias, the SD of the differences, and the limits of agreement were estimated. Statistical significance was set at P <. 05. Results Intra- and inter-observer reliability was excellent, suggesting ICCs 0.988-1 and 0.981-1, respectively. The highest CCs were obtained from depth measurements, while the lowest CCs were obtained from length measurements. Although the differences were scattered around the bias. The estimated bias values for USG and CBCT were 0.18 (0.153-0.21) (P <. 001) and 0.091 (0.079-0.102) (P <. 001), respectively. Observers recorded measurements which were slightly underestimated with both techniques utilized. Conclusions Observers measured periodontal defects with clinically acceptable underestimations by using CBCT and USG. Advances in knowledge It is important to compare different innovative imaging modalities and gauge their efficiency in the measurement of various types of periodontal defects in terms of treatment planning, prognosis, and follow up of those cases.
CBCT , dehiscence , endo-periodontal defect , fenestration , USG
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Department of Periodontology, Faculty of Dentistry, Ankara Yildirim Beyazit University, Ankara, 06010, Turkey
Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, 06500, Turkey
Department of Surgery and Pediatric Dentistry, Faculty of Stomatology, Khoja Akhmet Yassewi International Kazakh Turkish University, Turkestan, 161200, Kazakhstan
Arel Oral and Dental Health Clinic, Etimesgut, Ankara, 06793, Turkey
Department of Biostatistics, Faculty of Veterinary Medicine, Ankara University, Ankara, 06110, Turkey
Department of Periodontology
Department of Dentomaxillofacial Radiology
Department of Surgery and Pediatric Dentistry
Arel Oral and Dental Health Clinic
Department of Biostatistics
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