Background: Evaluation of the maxillary sinus anatomy prior to sinus lift procedures is important to avoid surgical complications due to the close anatomical relationship between the posterior maxillary region and the maxillary sinüs. Introduction: In order to avoid traumatizing the posterior superior alveolar artery and to prevent perioperative bleeding, locating exact position of the artery is imperative before the surgical procedures. Methods: 150 CBCT scans were evaluated. The distance from the inferior border of the PSAA to the alveolar crest (the vertical line from the artery to the crest) and floor of maxillary sinus, the distance from PSAA to medial sinus wall, nasal septum, zygomatic arch, position, distance from floor of maksiller sinüs to the alveolar crest and diameter of the PSAA were assessed. Locations of the artery were classified. Results: The artery diameters were mostly ≥ 1 mm. Artery was mostly intraosseous (59.7%), 21.7 % was superficial and only 18.7% was intra-sinuscular. Conclusion: The location of PSAA is intraosseous in most patients. The artery diameters were mostly ≥ 1 mm and we can say that increasing the size also increases the risk of complications.

Hemangiomas are benign tumors of infancy that display a rapid growth phase with endothelial cell proliferation. Phleboliths are calcified thrombi found in veins, venulae and sinusoidal vessels of hemangiomas. In the head and neck, phleboliths nearly always signal the presence of a hemangioma. Hemangioma with multiple phleboliths is described including its features on panoramic radiography and cone beam computed tomography images.

Objectives: Condyle fractures constitute 17.5-52% of all mandibular fractures. Our first aim was to investigate whether Panoramic Radiography or Lateral Skull Projection images with lower radiation dose can be used instead of Cone Beam Computed Tomography in the diagnosis of vertical condylar fractures. The second aim of the study was to compare observers' capabilities in diagnosing these fractures. Materials and Methods:A sample consisting of 15 fresh cadaver mandibles with 30 condyles frozen within 24 hours post-mortem was randomly selected. Vertical fractures from the lateral 2/3 of the condyle head with 0.5 (10 condyles) and 1mm (10 condyles) thickness were created using a fret saw. After creating condyle fractures, digital panoramic, LSP, and CBCT images were acquired. Two dentomaxillofacial radiologists with 15 years of experience, two dentomaxillofacial radiologists with five and seven years of experience, and two newly graduated dentists have evaluated the images. The success of the observers in diagnosing the vertical condyle fracture in each imaging method, intra-observer and interobserver agreement was evaluated. Results:The success of all dentists in determining the condyle fractures using LSP images was higher than the success they achieved using panoramic images, but the sensitivity values of LSP and panoramic radiographs for detecting vertical condyle fractures were found to be below 50%. Using different imaging options with CBCT, all diagnoses made by new graduates and dentomaxillofacial radiologists with five and 15 years' experience were 100% compatible with the gold standard (AC1: 1 (1-1)). Conclusions:For the diagnosis of vertical condyle fractures, conventional techniques (panoramic and lateral jaw imaging methods) were found to be insufficient.

No abstract

No abstract