Diagnostic accuracy of cone- beam CT with different voxel resolutions in detection of buccal recurrent caries under composite restorations

Abdullah Omar AL Batani, Saifan; Mohammed El Shinawi, Una; Hamdy Mowaf Y, Bassant; Ibrahim Ali, Ashraf

doi:10.21608/mjd.2020.198729

Diagnostic accuracy of cone- beam CT with different voxel resolutions in detection of buccal recurrent caries under composite restorations

Document Type : Original Article

Authors

¹ Master’s degree student, Oral medicine, Periodontology, Oral diagnosis and Radiology department; faculty of Dentistry; Mansoura University.

² Professor of Oral medicine, Periodontology, diagnosis and Oral Radiology; faculty of Dentistry; Mansoura University

³ Lecturer of Oral Radiology and diagnosis; faculty of dentistry; Mansoura University

⁴ Assistant Professor of Operative Dentistry; faculty of dentistry; Mansoura University.

10.21608/mjd.2020.198729

Abstract

Objectives: The aim of this study was to compare between clasp retention in metallic versus peek RPD frameworks constructed by using Purpose: The aim of this study was to assess the diagnostic accuracy of cone beam computed tomography (CBCT) in detection of simulated recurrent caries beneath composite restoration.
Materials and Methods: In this study, a total of 60 proximal slots of class II cavities were prepared on 60 extracted human premolars and molars. Then, 30 teeth were randomly selected out of this sample and artificial carious lesions were created on these teeth by a round diamond bur no .2(study group). All cavities were restored by using composites resin and radiographed with CBCT unit (Cranex 3D) using 5x5mm field of view at three voxel sizes 0.85mm,0.125mm,0.200mm. Intra- and inter-observer agreements were calculated with Kappa statistics (κ). The area under the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic accuracy.
Results: The AUCs value for CBCT with voxel sizes 0.85mm,0.125mm, 0.200mm was 0.983 ,0.900,0.817, respectively. The kappa value for inter-observer agreement was 0.993,0.989,0.938 , respectively.
Conclusion: Diagnostic performance of CBCT was high in detecting the simulated small recurrent proximal caries under composite restoration,voxel size 0.125mm can be used to detect caries lesions with adequate accuracy and the least patient exposure dose.

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