Curr Med Imaging
Unit of Oral Pathology and Oral Medicine, Faculty of Dentistry, Universidad Andres Bello, Quillota 980, Viña del Mar, Chile.
Published: February 2024
Background: The lack of knowledge of the relation of the maxillary sinus with the apexes of maxillary posterior teeth can lead to important complications during common dental procedures. This can be avoided using different imaging techniques, such as orthopantomography (OPG) and cone beam computed tomography (CBCT). The present study aims to compare the performance of OPG with CBCT in measuring the vertical distance of the apexes of posterior-superior teeth to the maxillary sinus.
Methods: This study corresponded to a cross-sectional study. OPGs and CBCT scans were obtained from the same individuals, and the qualitative and quantitative vertical distance of the apexes in relation to the maxillary sinus was categorized and measured in mm.
Results: A total of 28 pairs of OPGs and CBCT scans from the same patients were obtained. About 381 roots were analysed, which included 89 upper first premolars, 51 upper second premolars, 115 upper first molars, and 126 upper second molars. Projection/protrusion was observed with more frequency in molars, specially 1º molars in both OPG (n= 75, 65.2%) and CBCT (n= 31, 27%); however, 106 more cases (27.9%) were classified as projected in the OPG compared to CBCT (p < 0.05). When comparing the performance of the OPG and CBTC for analysing all roots qualitatively, there was a 57.8% agreement between both techniques. This difference was statistically significant (p <0.0001). Statistically significant differences were also observed when comparing the millimetric differences.
Conclusion: This study showed that OPG is not an accurate technique to observe the relationship between the maxillary sinus and the apexes of the upper posterior teeth. In those cases where precision is required when performing dental procedures in this area, CBCT should be used. When not available, the clinicians should be aware of the limitations of the OPG and add other complementary techniques.
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http://dx.doi.org/10.2174/1573405620666230705120909 | DOI Listing |
Int J Surg Case Rep
January 2025
Faculty of Medicine, University of Damascus, Damascus, Syrian Arab Republic.
Introduction: Mesenchymal chondrosarcoma (MC) is a high-grade variant of chondrosarcoma, essentially composed of poorly differentiated spindle cells interspersed with areas of cartilage or chondroid matrix. MC is extremely rare; it only accounts for 0.1 % of head and neck tumors and for only 1 % of all chondrosarcomas (CSs).
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January 2025
Department of Oral and Maxillofacial Surgery, College of Dentistry, University of Baghdad, Bab- Almoadham, Medical City.
Pterygomaxillary separation (PMS) is an important step in Le Fort I osteotomy procedure, without which complete mobilization of the maxilla cannot be achieved. The aim of this study was to evaluate PMS patterns and their relationship with the anatomic measurements in Le Fort I osteotomy. In this prospective observational study cone beam computed tomography (CBCT) was used to measure the anatomic variables of the pterygomaxillary junction (PMJ) region including thickness, width, the distance between the most concave point at the lateral surface of PMJ and the greater palatine foramen (C-GPF), and the angle preoperatively, and the separation patterns postoperatively divided into the clean-cut type, maxillary sinus type, and the pterygoid fracture type.
View Article and Find Full Text PDFInt Med Case Rep J
January 2025
Department of Pediatric Ophthalmology, Prince Sultan Military Medical City, Riyadh, Saudi Arabia.
Introduction: Rhabdomyosarcoma (RMS) originates from undifferentiated mesenchymal cells that give rise to striated muscles. The symptoms of para-meningeal RMS often resemble those of allergic rhinosinusitis, including nasal congestion, mucus discharge, headache, and occasional nosebleeds. We report a child with atypical clinical presentation of ocular hypertropia secondary to para-meningeal RMS.
View Article and Find Full Text PDFBMC Oral Health
January 2025
Faculty of Dentistry Department of Oral and Maxillofacial Radiology, Ondokuz Mayıs University, Atakum/Samsun, Turkey.
Aim: This study aimed to evaluate the prevalence, location and diameters of Posterior superior alveolar artery (PSAA) and Infraorbital foramen (IOF) to find out whether there is any relationship between PSAA and IOF, and to predict their location relative to each other in surgical procedures by using cone beam computed tomography (CBCT).
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JBMR Plus
February 2025
Radiology and Imaging Sciences, National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, MD 20892, United States.
Jansen metaphyseal chondrodysplasia (JMC) is an ultra-rare disorder caused by constitutive activation of parathyroid hormone type 1 receptor (PTH1R). We sought to characterize the craniofacial phenotype of patients with the disease. Six patients with genetically confirmed JMC underwent comprehensive craniofacial phenotyping revealing a distinct facial appearance that prompted a cephalometric analysis demonstrating a pattern of mandibular retrognathia.
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