Influence of observer’s experience on diagnosing simulated periapical lesions

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Edition V04N03 | Year 2014 | Editorial Original Article | Pages 34 to 41

Edith Lara-carilho Gabriel Arteze-sosa

Objective: To compare the performance of observers with different knowledge when detecting periapical lesions. Methods: We obtained nine dry human hemimandibles. Periapical lesions were created with a bur and radiographic sets were taken for each hemimandible in four stages (initial, no cancellous bone, removal of 0.5 and 1 mm of cortical bone). Each radiographic set comprised five digital radiographs taken at different angulations (ortho, mesio, disto, lingual and vestibuloradial). Thirty six radiographs sets were obtained with a total of 180 images. The images were evaluated by experienced examiners and students. Mann Whitney test and Spearman’s correlation were applied for data comparison. Results: In all study stages, no statistically significant differences were found (P ≤ 0.05) between observers, with a positive association established by Spearman’s correlation in two stages (removal of 0.05 and 1 mm of cortical bone; 0.866 and 0.500, respectively). Conclusions: There were no statistically significant differences in diagnostic accuracy between experienced examiners and students when detecting simulated periapical lesions in dry human mandibles.

Dental education, Dental radiography, Endodontics, Diagnostic imaging,

Lara-Carrillo E, Arzate-Sosa G. Inluence of observer’s experience on diagnosing simulated periapical lesions. Dental Press Endod. 2014 Sept-Dec;4(3):34-41. DOI:

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