الفهرس 
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Abstract
The aim of this study was to investigate the effect of impacted canine on the
maxillary sinus volume. Twenty seven CBCT scans (54 maxillary sinuses) of
patients who had a unilateral impacted maxillary canine were included.
The volumes of the maxillary sinuses were measured for both the impaction
and the normal sides.
from this study it was concluded that:
1. The impacted maxillary canine affects the volume of the maxillary
sinus which in hence affect its functions.
2. Females had significantly higher prevalence of impacted canine than
males.
3. Left side, and palatal unilateral impactions showed a high incidence of
impaction than right side and labial unilateral impacted canine
respectively
4. The males had greater sinus volumes than females.
5. The female’s maxillary sinus volume negatively affected by canine
impaction more than that of the males.
6. The volume of the maxillary sinus was negatively affected by
impaction more when the impaction was on the right side and palatally
positioned than the left side and buccally positioned respectively.