Abstract
IntroductionAccurate radiographic interpretation is of the utmost importance in the diagnosis and treatment of patients. Previous studies have indicated subjectivity in the radiographic interpretation of periapical tissues irrespective of using conventional radiography, digital radiography, or cone-beam computed tomographic (CBCT) imaging. No studies to date have evaluated the reliability of the interpretation of periapical tissues based on the size of periapical radiolucency (PAR). The purpose of this study was to assess the interobserver and intraobserver reliability of CBCT interpretation by observers from different specialties and different levels of experience when identifying PARs of various sizes. MethodsLimited field of view CBCT scans were selected such that a variety of PARs with various sizes were included. Six observers with different levels of experience and fields of specialty evaluated periradicular tissues of 28 roots on the CBCT scans at 3 separate sittings each a month apart. ResultsThe overall Fleiss kappa coefficient for interobserver reliability and intraobserver reliability was 0.88 and 0.85; the larger the PAR, the more reliable the radiographic interpretation. Increased experience level improved the intraobserver reliability. ConclusionsCBCT imaging appears to be a reliable method for the interpretation of PAR. The larger the PAR is the more reliable the radiographic interpretation.
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