AIM: The aim of this prospective study was to investigate radiologic and clinical factors associated with increased difficulty in the removal of impacted maxillary canines. And to form an index to measure the difficulty of removal of the impacted maxillary canines preoperatively. Materials and methods: A total of 40 patients who required surgical extractions of impacted maxillary canines betweenOctober 2020 and October2021 were involved in the study. Radiologic and clinical data were taken preoperatively. All extractions were performed under local anesthesia by a single operator. The surgical difficulty was measured by the total intervention time

maxillary canine, the curvature of roots, CBCT, impacted, index