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  • Title: Interrelationship between the position of impacted maxillary canines and the morphology of the maxilla.
    Author: Kim Y, Hyun HK, Jang KT.
    Journal: Am J Orthod Dentofacial Orthop; 2012 May; 141(5):556-62. PubMed ID: 22554749.
    Abstract:
    INTRODUCTION: The aim of this study was to examine whether there is a relationship between the position of impacted maxillary canines and the morphology of the maxilla. METHODS: The palatally impacted canine group included 18 boys and 27 girls with an average age of 12 years 9 months (±2 years 1 month). The buccally impacted canine group comprised 19 boys and 26 girls with an average age of 12 years 2 months (±1 year 4 months). Arch length/intermolar width × 100 was used as the value for comparison of maxillary arch shapes, and palatal vault depth/intermolar width × 100 was used to compare the shapes of palate between the 2 groups. Each category was directly measured from the diagnostic model. RESULTS: Both the arch length/intermolar width × 100 and the palatal vault depth/intermolar width × 100 formulas showed statistically significant differences (P <0.0001), indicating differences in the shape of maxillary arch and the palatal vault between the 2 groups. CONCLUSIONS: The shape of the maxillary arch was narrower and longer in the palatally impacted canine group compared with the buccally impacted canine group, and the palatally impacted canine group had a deeper palatal vault than did the buccally impacted canine group.
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