It has become clear that food crushing is performed in the circumscribed region between functional cusps, that is, at "the main occluding area". However, the position of the main occluding area in patients with fixed partial dentures (FPDs) has not been investigated quantitatively yet. There is a possibility that the load onto the abutment teeth of FPDs is loaded excessively depending on the position of the main occluding area at the early stage of mastication. Therefore the position of the main occluding areas of the FPDs was investigated. The purpose of this study was to evaluate the position of the main occluding area in patients with FPDs quantitatively. We compared the position of the main occluding area between the control subjects who had complete dentition and the patients who wore FPDs for replacing missing first lower molars. Pieces of temporary filling material were used as test material to decide the position of the main occluding area. The centroid coordinate of the test material was calculated and projected onto the reference axis in order to evaluate the position of the main occluding area. Moreover, we recorded the occlusal contact areas at the intercuspal position in order to evaluate the relationship between the position of main occluding area and occlusal contacts.As a result, the position of the main occluding areas in the FPD group were significantly posterior to those in the control group and tended to be less stable. Besides occlusal contact area, existence of periodontal ligaments in the pontic region may cause the difference of the positions of the main occluding area between the FPD group and the control group.
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J Cardiothorac Surg
January 2025
Department of Cardiovascular Surgery of The First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qingchun Road, Hangzhou, Zhejiang, 310000, China.
Interventional occlusion of Patent ductus arteriosus (PDA) is generally efficacious and complications such as delayed occluder displacement are infrequent. Herein, we report a case of 24-year-old female with a history of unsuccessful PDA closures, who subsequently experienced delayed occluder displacement into the left main pulmonary artery. Despite numerous unsuccessful catheter-based interventions, thoracic endovascular aortic repair (TEVAR) was successfully executed.
View Article and Find Full Text PDFJ Neurointerv Surg
January 2025
Intervention Neuroradiology, CHU Limoges, Limoges, Aquitaine-Limousin-Poitou-Charentes, France
Background: Hemorrhage is a major complication of brain arteriovenous malformations (AVMs) embolization, which can be related to persistent arteriovenous shunts that were not completely occluded during the embolization. In transvenous embolization (TVE) this risk is deemed higher for AVMs larger than 3 cm featuring multiple veins of drainage. Herein, we will discuss a few selected cases where brain AVMs with more than one draining vein were deemed safe for curative embolization with advanced endovascular techniques after a careful anatomical study through the four dimensional-digital subtraction angiography (4D-DSA) imaging.
View Article and Find Full Text PDFJ Environ Manage
January 2025
School of Agriculture, Food and Wine, Faculty of Sciences, Engineering and Technology, Waite Campus, University of Adelaide, Urrbrae, 5064, Australia. Electronic address:
Coastal wetland rehabilitation can provide nature-based solutions for climate change mitigation. The high carbon accumulation rate and carbon secured, potentially for several millennia, as soil organic carbon (SOC), is among the reasons. Measuring SOC storage and accrual over time are the main tools to understand rehabilitation success.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Neurosurgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, China.
Hydrocephalus commonly occurs after subarachnoid hemorrhage (SAH) and is associated with increased morbidity and disability in patients with SAH. Choroid plexus cerebrospinal fluid (CSF) hypersecretion, obliterative arachnoiditis occluding the arachnoid villi, lymphatic obstruction, subarachnoid fibrosis, and glymphatic system injury are considered the main pathological mechanisms of hydrocephalus after SAH. Although the mechanisms of hydrocephalus after SAH are increasingly being revealed, the clinical prognosis of SAH still has not improved significantly.
View Article and Find Full Text PDFFacts Views Vis Obgyn
December 2024
Background: The Adiana® Permanent Contraception System was a hysteroscopic tubal occlusion device but was withdrawn from the market in 2012.
Objective: To evaluate the safety, feasibility and efficacy of the Adiana hysteroscopic tubal occlusion.
Materials And Methods: A prospective observational multicentre cohort study of 300 women undergoing hysteroscopic sterilisation using the Adiana® was conducted in the Netherlands between 2009 and 2012.
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