title: Comparison of Cone-Beam Computed Tomography and Intraoral Radiography in Detection of Recurrent Caries under Composite Restorations.
abstract: Secondary caries is the most common cause of dental restoration failures. This study aimed to compare the diagnostic accuracy of conventional and digital intraoral radiography and cone beam computed tomography (CBCT) for detection of recurrent caries around composite restorations. mesio-occluso-distal (MOD) cavities were prepared using bur on 45 extracted sound human molar teeth. The teeth were divided into 3 groups. In the control group, cavities were restored with composite resin after etching and bonding (n=15). In Group 2, 500-μm thick wax was placed over the buccal, lingual and gingival walls and the cavities were restored with composite resin. Group 3 specimens were subjected to pH cycling and artificial caries were created on the buccal, lingual and gingival walls. The cavities were restored with composite. Conventional and digital photo-stimulable phosphor (PSP; Optime) radiographs and two CBCTs images (NewTom 3G and Cranex 3D) were obtained from them. Presence or absence of caries in the cavity walls was assessed on these images. Data were analyzed using Kappa statistic. The diagnostic accuracy of CBCT was significantly higher than that of digital and conventional intraoral radiography (p<0.05). The accuracy was 0.83, 0.78, 0.55 and 0.49 for CBCT Cranex 3D, CBCT NewTom 3G, conventional and digital intraoral radiography, respectively. CBCT has a higher diagnostic accuracy than digital and conventional intraoral radiography for detection of secondary caries around composite restorations.
authors.affiliation: Dental Research Center, Department of Restorative Dentistry, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Shahin
authors.initials: S
authors.lastname: Kasraei
authors.affiliation: Dental Research Center, Department of Oral and Maxillofacial Radiology, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Shokri
authors.affiliation: Modeling of Noncommunicable Diseases Research Center, Department of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Jalal
authors.initials: J
authors.lastname: Poorolajal
authors.affiliation: Department of Oral and Maxillofacial Radiology, Dental School, Kurdistan University of Medical Sciences, Sanandaj, Iran.
authors.forename: Samira
authors.initials: S
authors.lastname: Khajeh
authors.affiliation: Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.
authors.forename: Hamid
authors.initials: H
authors.lastname: Rahmani
mesh_terms: D003188:Composite Resins; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003731:Dental Caries / Q000175:diagnosis* / Q000628:therapy; D003793:Dental Restoration, Permanent; D006801:Humans; D019252:Radiography, Dental, Digital / Q000379:methods; D012008:Recurrence; D012680:Sensitivity and Specificity
chemical_list: D003188:Composite Resins