Spiral Computed Tomography Based Maxillary Sinus Imaging in Relation to Tooth Loss, Implant Placement and Potential Grafting Procedure

Abstract

Objectives:The purpose of the present study was to explore the maxillary sinus anatomy, its variations and volume in patients with a need for maxillary implant placement. Materials and Methods: Maxillary sinus data of 101 consecutive patients who underwent spiral computed tomography (CT) scans for preoperative implant planning in the maxilla at the Department of Periodontology, University Hospital, KULeuven were retrospectively evaluated. The alveolar bone height was measured on serial cross-sectional images between alveolar crest and sinus floor, parallel to the tooth axis. In order to describe the size of the maxillary sinus anteroposterior (AP) and mediolateral (ML) diameters of the sinus were measured. Results:The results indicated that the alveolar bone height was significantly higher in the premolar regions in comparison to the molar region (n = 46, P < 0.01). The age showed negative relation to bone dimension (r = -0.32, P = 0.04). Anterior and posterior border of the maxillary sinuses were mostly located in the first premolar (49%) and second molar (84%) regions, respectively. Maxillary sinus septa were indentified in 47% of the maxillary antra. Almost 2/3 (66%) of the patients showed major (> 4 mm) mucosal thickening mostly at the level of the sinus floor. The present sample did not allow revealing any significant difference (P > 0.05) in maxillary sinus dimensions for partially dentate and edentulous subjects. Conclusions: Cross-sectional imaging can be used in order to obtain more accurate information on the morphology, variation, and the amount of maxillary bone adjacent to the maxillary sinus.

Assessment of the Relationship between the Maxillary Sinus and the Canine Root tip using Cone Beam Computed Tomography

“…This nding was in accordance with previous studies [2,25,26]. Comparably, Shahbazian et al [27] reported the symmetric morphology of the maxillary sinus in 83% of their cases, and according to Hamdy et al [28], the average linear cranio-caudal, antero-posterior, and medio-lateral measurements were almost bilaterally-matched in all cases. Based on our results, bilateral symmetry was even more common in those maxillary sinuses which extended into the canine area.…”

Shapes and Sizes of Sella Turcica Using Computerized Tomography (CT) from Tertiary Hospital in Sokoto, Nigeria

“…Computerized Tomographic Scan (CT Scan) on the other hand, refers to ionizing radiation that is made up of an X-rays which can be used for image reconstruction using a computer. However, CT Scan has lower radiation toxicity and more costly compared to simple radiograph [8,9]. At about 8 months of intra-uterine life the body of the sphenoid bone is divided into two main parts namely; pre-sphenoid and post sphenoid parts.…”

Maxillary Sinus Pneumatization and Its Relationship with Vitamin D Deficiency; A Cross Sectional Study

“…In reality, the posterior maxillary teeth are related to the sinus floor and the distance between them may vary from a good bony bridge to a very close approximation to the floor. In which cases, an impression of the root apices presents on the only separating thin lining mucosa [14]. Environmental factors may play a role in the etiology of this condition, which lead to pushing of the Schnederian membrane (highly reactive membrane) against cavity sides of the sinus following every patient's breath.…”