Prevalence of Haller Cell and Accessory Maxillary Ostium: A Cone-Beam Computed Tomographic Study

Abstract

Introduction: Haller cell and accessory maxillary ostium (AMO) do not represent a diseased state, but they can be responsible for the development of maxillary sinusitis. Aim and Objectives: The study aimed to evaluate the frequency and volumetry of Haller cell and the prevalence of AMO on cone-beam computed tomography (CBCT). Materials and Methods: The two hundred CBCT scans of patients (400 bilateral maxillary sinus region) were evaluated for the presence of Haller cell, and AMO coronal, axial, and sagittal plane was inspected; then, volumetric measurement was carried out at the maximum mediolateral dimension. Based on the size, two observers arbitrarily categorized the Haller cell into small, medium, and large. Finally, descriptive statistics and Chi-square test were done. Results: Fifty-six Haller cell were identified with a prevalence of 28%, of which 20% were unilateral, and 8% were bilateral. Small-sized Haller cell was seen in 11%, medium-sized was seen in 13%, and large sized was seen in 4%. AMO was present unilaterally in 5% of the studied scans. Conclusion: Knowledge of Haller cell and accessory maxillary ostium may aid in interpreting CBCT, which may also forewarn surgeons before surgeries.