Impact of CBCT image quality on the confidence of furcation measurements. (1st June 2020)

• Record Type: Journal Article
• Authors: Rinne, Carin Aime; Dagassan‐Berndt, Dorothea C.; Connert, Thomas; Müller‐Gerbl, Magdalena; Weiger, Roland; Walter, Clemens
• Is Part Of: Journal of clinical periodontology. Volume 47:Number 7(2020)
• Page Start: 816
• Page End: 824
• Publication Date: 2020-06-01
• Subjects: CBCT -- furcation -- imaging quality -- periodontal surgery; Periodontics -- Periodicals; 617.6
• DOI: 10.1111/jcpe.13298
• Languages: English
• ISSNs: 0303-6979

Abstract

Abstract: Background: To investigate the impact of scanning parameter in cone‐beam computed tomography (CBCT) images on accuracy and confidence with measurements of furcation involvement (FI) in maxillary molars. Material and methods: Six half cadaver heads with present maxillary molars ( n = 10) were available. CBCT scans with the fixed‐parameter field of view (4 × 4 cm, 12 × 17 cm) amperage and voltage (4 mA, 90 kV) and with varying scan modes (SM), that is images/scan (IS), voxel sizes (VZ) and rotation (R), were performed using one CBCT apparatus. The images were analysed by two calibrated investigators. Horizontal FI's were measured in mm or a "through and through" destruction (FI degree III) was recorded. Each rater scored the FI measurements performed in each scan as "confident" or as "not confident". Data were statistically analysed using chi‐square tests. Results: The agreement between CBCT FI measurements and intra‐surgical FI measurements varied according to SM (SM HiSp 180°, 0.08: kappa 0.538, CI; 95%: 0.362–0.714; SM Std. 360°, 0.25: kappa 0.698, CI; 95%: 0.534–0.861). The number of measurements scored as "confident" varied according to SM (SM Std. 360°, 0.08:52 out of 60 measurements; SM Std. 360°, 0.25:16 out of 60 measurements; p < .001). Conclusions: SM of CBCT significantly affect the confidence with FI measurements in maxillary molars.