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In recent years, a greater number of adult patients are seeking orthodontic treatment, not only for esthetics but for better functioning and hygiene purposes. However, they are more focused on comfortable and invisible treatment alternatives to conventional metal brackets. This abstract is a multifaceted interplay between Invisalign ® and different treatments of class II malocclusion, which embarks on the potency of Invisalign ® in treating this condition in adult patients. The review delves into analyzing the efficacy of Invisalign ® in molar distalization, class II elastics, extraction treatment, class II division 2 patients, their limitations, challenges, and future prospects. This article aspires the orthodontists understand the complex nature of class II malocclusion treatment in adults with Invisalign ® and its application in clinical practice with improved patient outcomes., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Dahhas et al.)

BACKGROUND An understanding of root canal morphology is vital for successful endodontic treatment. However, variations in the root canal system of permanent canines, especially in relation to population-based diversity, are not well-documented. This study thus aimed to analyze the root canal numbers, configurations, and bilateral symmetry in 1080 permanent canine teeth among 270 Saudi individuals using cone-beam computed tomography (CBCT), contributing to the existing body of knowledge and aiding clinicians in devising effective treatment strategies. MATERIAL AND METHODS The CBCT images of 270 participants, encompassing 1080 canines (540 pairs of upper and lower canines), were scrutinized for root and canal counts. Canal configurations were assessed based on Ahmed's and Vertucci's classifications. Bilateral symmetry in these parameters was recorded and the data were statistically analyzed. RESULTS The study revealed variable prevalence of multiple roots and canals in maxillary and mandibular canines. Ahmed's and Vertucci's type I canal configuration was predominantly observed. Notably, significant bilateral symmetry was noted in root and canal numbers, and canal configurations. CONCLUSIONS The most common configuration of permanent canines was a single root and canal, usually adhering to Ahmed's and Vertucci's type I classification. Mandibular canines showed a higher incidence of two canals than two roots. The extent of bilateral symmetry, especially in mandibular canines, could provide valuable insights for better contralateral tooth treatment planning.