Journal
ANGLE ORTHODONTIST
Volume 92, Issue 1, Pages 18-26Publisher
E H ANGLE EDUCATION RESEARCH FOUNDATION, INC
DOI: 10.2319/030121-164.1
Keywords
Canine; Impaction; Panoramic radiograph; Eruption pathway; Prediction
Categories
Funding
- Pusan National University
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By comparing the normal eruption and impaction of maxillary canines, differences in angulation patterns were identified, highlighting the need for early intervention or regular follow-up to prevent maxillary canine impaction.
Objectives: To compare the normal eruption pattern and angulation in impacted maxillary canines using panoramic radiographs to predict maxillary canine impaction. Materials and Methods: Patients aged 6 to 15 years were classified into the normal eruption group (n = 229) and the impaction group (n = 191). At least two panoramic radiographs were taken in the normal eruption group during the eruption process of the maxillary canine. The growth pattern of the maxillary canine was analyzed using an XY coordinate system, with the tip of the maxillary lateral incisor as the origin and the tooth's long axis as the Y-axis and measurement of the relative position of the crown tip and angulation of the maxillary canine. Results: The crown tips of normally erupted maxillary canines were intensively distributed along the distal surface of the maxillary lateral incisor, while those of impacted canines were widely distributed. The angulations of the normally erupted canines increased as eruption increased along the lateral incisor and then decreased at the cervical point of the lateral incisor. The angulations of the impacted canines were scattered, with no uniform pattern. Conclusions: While using the normal eruption path of the maxillary canine and the pattern of change in angulation based on the distal surface of the maxillary lateral incisor, early intervention or regular follow-up is needed to prevent maxillary canine impaction. (Angle Orthod. 2022;92:18-26.)
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