Objectives: The study aimed to compare and evaluate the morphologies, angulations, and inclinations of
lateral incisors, central incisors, and first premolars in of buccal and palatal impacted maxillary canines.
Materials and Methods: The retrospective observational research utilized cone beam computed tomography
(CBCT) images from 45 patients, categorized into three groups: Buccal Impacted Canines (BIC), Palatal
Impacted Canines (PIC), and a Control Group (CG) devoid of impactions, including 15 patients in each group.
Parameters, including crown and root widths and lengths, angulations, and inclinations of adjacent teeth, were
measured. Statistical analyses involved one-way ANOVA to compare PIC, BIC and CG. The paired t-test was
employed to compare the parameters between the ipsilateral and contralateral sides within the PIC and BIC. p
values less than or equal to 0.05 were considered significant.
Results: Notable differences were noted primarily in the lateral incisors among the three groups under study.
Palatal impacted canines were associated with shorter root lengths of lateral incisors (p=0.04), while buccal
impacted canines showed increased angulation and inclination of lateral incisors compared to PIC and CG
(p=0.013). Within the PIC group, the affected side exhibited narrower buccolingual width and shorter crown
length of central incisors (p<0.001, p=0.005) and reduced root lengths of lateral incisors (p=0.019).
Conversely, the BIC group demonstrated increased buccolingual width and greater inclination of lateral
incisors on the impacted side (p=0.007, p=0.003). ICC values indicated moderate-good reliability.
Conclusion: Palatal and Buccal impacted maxillary canines were found to be associated with distinct
morphological and angulation changes in adjacent lateral incisors.
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