Introduction: Permanent maxillary canine impaction is a common problem.
Impacted canines can cause variable degrees of resorption on the roots of surrounding
teeth, particularly the lateral incisors. Aim: The objective of this study was to evaluate
the effect of different angulations of impacted maxillary canine on root resorption
of adjacent teeth using cone-beam computed tomography (CBCT). Materials and
Methods: The sample included 30 CBCTs presenting with unilateral or bilateral
impacted maxillary canines, ranging in age from 15 to 30 years that were collected.
from the Department of Radiology, Faculty of Dentistry, Suez Canal University. Canine
angulation relative to the maxillary occlusal plane and adjacent lateral incisor was
measured, as well as the locations of the impacted canines. Results: The results of
the current study showed (58.8 %) with slight resorption and (26.5%) with moderate
resorption of lateral incisor root. There was a statistically significant relationship < br />between root resorption severity and angulation of impacted maxillary canine relative
to the lateral incisor. The angle of the impacted maxillary canine with the occlusal plane
can`t solely rely on determining the severity of root resorption (RR). Conclusion: RR
occurs due to the proximity of the impacted maxillary canine to the adjacent lateral
incisor KEYWORDS: Cone beam computed tomography, Impacted canine, Lateral
incisor Root resorption.