Chun-Yuan Zhang

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To investigate whether masticatory fatigue affects the fracture resistance and pattern of lower premolars restored with quartz-fiber post-core and full crown, 44 single rooted lower premolars recently extracted from orthodontic patients were divided into two groups of 22 each. The crowns of all teeth were removed and endodontically treated and then restored(More)
PURPOSE To analyze the biomechanics of 3 designs of implant treatment for 3 teeth missing in posterior low arch quadrants. MATERIAL AND METHODS A posterior portion of the human mandible missing 44, 45, 46 and three 4.1 × 10 mm threaded ITI implants with crowns were used to construct the finite element model. According to 3 implants being single, splinted(More)
Syphilis is now rare and easily misdiagnosed because of the wide use of antibiotics in the clinical. We report a case of cerebral hemorrhage in a patient with hypertension who was first diagnosed as hypertensive cerebral hemorrhage. However, treponema pallidum particle agglutination and rapid plasma regain tests of cerebrospinal fluid revealed the existence(More)
To the Editor: Double aortic arch (DAA), a rare congenital cardiovascular disorder, is usually diagnosed and surgically corrected at an early age due to dyspnea or dysphagia caused by an obstruction of trachea or esophagus. [1] Here, we report a case with DAA and a dissecting aneurysm, which was successfully performed by stent‑assisted coiling. A(More)
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