Large interindividual variations have been demonstrated when dentists suggest clinical management of endodontically treated teeth. Since variations also have been shown in radiographic diagnosis of the periapical tissues, a hypothesis was tested that explains variation in treatment as a function of variation in diagnosis. Fifty-four general practitioners suggested diagnosis and management of 32 endodontically treated roots. Spearman's rank correlation coefficient reached 0.298 when the examiners were definitely sure of the presence of a periapical lesion, and 0.356 when probable lesions also were included. Conclusively, the hypothesis seemed to have a limited value in explaining why dentists carry out retreatment. Instead a multi-aspect approach to this problem is suggested.
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