International Travel Medicine Center of Iran International Journal of Travel Medicine and Global Health 2322-1100 12 4 2024 12 01 Evaluating the Correlation between Maxillary Sinus and Maxillary Canine Root Tip in Cone Beam Computed Tomography 198120 10.30491/ijtmgh.2024.434264.1402 EN Salar Payahoo Department of Oral and Maxillofacial Radiology, School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran 0000-0001-7177-4407 Aisan Ghaznavi Department of Oral and Maxillofacial Radiology, School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran 0000-0003-2175-8091 Zahra Chehrearar Department of Oral and Maxillofacial Radiology, School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran Zahra Ghoharfar Department of Prosthodontics, School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran 0000-0002-2899-8218 Journal Article 2024 01 06 <strong>Background:</strong> Recognizing the variable anatomy of the Maxillary Sinus (MS) and its proximity to the developing maxillary canines, this study aimed to evaluate the correlation between MS and maxillary canine root apex in cone beam computed tomography (CBCT). <br /><strong>Methods: </strong>In this cross-sectional analytical study all CBCT scans of patients were reviewed retrospectively. Random sampling was used to select the CBCT scans of patients. When the MS extended to the canine area, the vertical distance between them was measured, and their relationship was classified into three types: I (more than 2 mm distance), II (less than 2 mm distance or in-contact), and III (interlock).<br /><strong>Results:</strong> Most of the cases of relation between the apex of the canine tooth root and the floor of the maxillary sinus were type 1 (92.9%), followed by type 2a with a frequency of 3.7%, type 3 with a frequency of 2.7% and type 2b with a frequency of 0.7%. The relationship between the apex of the root of the canine tooth and the floor of the maxillary sinus was not significant based on sides (P=0.583), but there was a significant difference based on gender (P=0.025).<br /><strong>Conclusion: </strong>In most cases, the MS encroached upon the canine region and occasionally extended into the incisor area. This observation underscores the need for heightened vigilance during surgical interventions involving the maxillary anterior sextant. https://www.ijtmgh.com/article_198120_6d85df917727fd4b6930c37cc35bf4ba.pdf