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Eur J Dent. 2017 Jan-Mar;11(1):117-121. doi: 10.4103/ejd.ejd_308_16.

Frequency of impacted teeth and categorization of impacted canines: A retrospective radiographic study using orthopantomograms.

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Department of Pediatric Dentistry and Orthodontics, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah 41311, Saudi Arabia.
Specialty Dental Center, King Fahad Hospital, Al Madinah, Al Munawwarah 41311, Saudi Arabia.
Department of Orthodontics, European University College, Dubai 53382, UAE.
Department of Restorative Dentistry, College of Dentistry, Taibah University, Al Madinah, Al Munawwarah, Saudi Arabia.
Visiting Professor, Department of Dental Materials, Islamic International Dental College, Riphah International University, Islamabad 44000, Pakistan.



The objective of this study is to determine the frequency of impacted maxillary canines using seven subtype classification system. For this purpose, impacted maxillary canines have been divided into seven various subtypes.


This is a descriptive, cross-sectional, and retrospective study conducted using radiographic data of residents of Madinah, Al Munawwarah. Radiographic data of 14,000 patients, who attended College of Dentistry, Taibah University, from January 2011 to February 2015, were screened against the selection criteria for the presence of impacted teeth. The individuals with maxillary impacted canines were matched to maxillary canine impaction. The occurrence of each subtype of impacted canines was calculated.


Impacted teeth are more common in the maxilla compared to mandible. The impacted canine represented the highest proportion of all impacted maxillary teeth followed by the second premolars and the central incisors. According to the classification system represented, Type II of canine impaction comprised the highest proportion (51%) while Type IV (0.5%) comprised the lowest frequency. The maxillary canine is the most frequently impacted tooth followed by mandibular canines.


Although there are many variations, the majority of impacted canines fall into Type II of the classification of impacted canines.


Canine; impaction; maxillary teeth; orthodontics

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