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- The impact of CBCT on the diagnosis and processing of maxillaris sinus pathologiesPublication . Clevenot-Roux, Arthur; Pereira, Gonçalo MartinsMaxillary sinus pathologies present a significant diagnostic challenge due to their proximity to dental and osseous structures. This thesis aims at evaluating the contribution of CBCT (Cone Beam Computed Tomography) the more advanced 3D imaging modalities, in the diagnosis and therapeutic management of these pathologies, compared to other imaging techniques such as conventional panoramic radiography 2D or computed tomography (CT scans) computed tomography, and magnetic resonance imaging (MRI). Indeed, CBCT scans are often used in dentistry to visualize the oral and maxillofacial structures, including teeth, jawbones, and sinus maxillary. First, we shall analyze the anatomy and physiology of the maxillary sinus, highlighting the structural features that influence diagnostic decisions. The maxillary sinus is intimately related to the roots of the posterior maxillary teeth, there is a frequency of mucosal diseases and sinusitis of dental origin. Moreover, understanding the anatomy of the maxillary sinus and its neurovascular components is essential both for sinus surgeries and for complications related to oral surgical procedures. Then, a comparison of the advantages and disadvantages of different imaging methods will be conducted, with a particular focus on image resolution, precision, radiation exposure, and associated costs. The clinical indications of CBCT will then be discussed, with a focus on its role in surgical planning, complication management, sinus lift, dental extractions and postoperative follow-up. Pre-operative assessment of the maxillary sinus is essential for the success of this surgery. Since its introduction in the late 1990s, CBCT has become a common diagnostic method. However, the use of CBCT and the selection of scanning protocol must be based on a good practice considering the required image quality and the patient's radiation exposure level. It is essential to be aware of these limits as a radiation protection measure to prevent unnecessary recurrence of these examinations.