Study on the application of CBCT in the diagnosis of chronic periapical periodontitis with different depth of periodontal pocket
Abstract
Objective To investigate the application of conical beam CT(CBCT) in the diagnosis of VRF with chronic periapical inflammation and different depth of periodontal exploration. Methods 40 teeth with chronic periapical inflammation suspected of VRF in 39 patients were examined by X-ray apical film, CBCT and periodontal examination respectively. Diagnosis and statistical analysis were performed for each affected tooth by two specialists, and subgroup analysis was performed according to the influence of the depth of the peridental pocket on the diagnosis results of CBCT. Results The sensitivity, missed diagnosis rate and consistency rate of CBCT in the diagnosis of VRF were 78.8%, 21.2% and 82.5%, respectively, which were significantly different from that of X-ray root tip film (54.8%, 45.2% and 60.0%) (P<0.05). The sensitivity and missed diagnosis rate of CBCT in the deep periodontal pocket group (probing depth ≥5mm) were significantly different from those in the non-deep periodontal pocket group (probing depth <5mm) (P<0.05). Conclusion CBCT is superior to X-ray apical film in the di_x005fagnosis of VRF. The presence of deep periodontal pocket has influence on sensitivity and missed diagnosis rate.
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