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Mean coefficient of variation of widths to show precision on reproduced panoramic radiographs in the dentulous and the edentulous groups. All the areas (Intermandibular width, Right ramus width, Left ramus width, Intercondylar width, and Interzygomatic width) of the dentulous group showed lower mean coefficients of variation, which indicate higher precision, than those of the edentulous group (The lower, the better).
