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There is extensive material in the orthodontic literature regarding canine ectopia but far less on the possible sequelae of ectopic canines, such as the resorption of maxillary incisor roots. This is the second paper in a two-part series exploring the subject of ectopic canines inducing root resorption of maxillary incisors. The first paper examined the orthodontic and dental literature in order to compile a review of the prevalence rates and longevity outcomes of maxillary incisor root resorption as a result of impacted maxillary canines. This second paper will explore the clinical management of patients with maxillary incisor resorption as a result of an impacted maxillary canine.
Clinical Relevance: Maxillary incisor root resorption induced by ectopic maxillary canines is an issue for all dental specialties; however, the awareness of each stage of management is limited. This paper aims to increase awareness and provide a reference point for appropriate management by clinicians.
Article
The prevalence of maxillary incisor root resorption induced by ectopic maxillary canines has been shown to range between 7.7% and 66.7% and the prevalence of central incisor resorption to range between 2% and 23%, according to various studies utilizing CT scanning.1,2,3,4,5,6 In addition, the female-to-male ratio of susceptibility varies between 2:1, 3:1, 4:1 and 10:1.7,8 The process of resorption can be rapid and therefore treatment must be carried out urgently to move the impacted canine away from the affected tooth, as cessation of resorption has been shown to occur following orthodontic treatment.9
Despite the limited data, our previous literature review has concluded that the overall long-term prognosis of resorption of maxillary incisors induced by impacted canines has been shown to be positive, with minimal loss of affected incisors having been demonstrated in various studies over a 1–28-year follow-up.3,9,10,11,12,13,14,15
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