Yifeng Qian

BACKGROUND: Inconsistent results have been found on the association between air pollution and stroke mortality. Additionally, evidence on people who are potentially sensitive to air pollution-associated stroke mortality is limited.

METHODS: Daily stroke mortality of adults aged over 65 between 2003 and 2008 in Shanghai, China were collected. The time-stratified case-crossover approach was used to assess the association between daily concentrations of air pollutants including particles ...

ObjectiveFew studies investigating associations between fine particulate air pollution and hemorrhagic stroke have considered subtypes. Additionally, less is known about the modification of such association by factors measured at the individual level. We aimed to investigate the risk of fatal intracerebral hemorrhage (ICH) incidence in case of PM2.5 (particles ≤ 2.5 μm in aerodynamic diameter) exposure.MethodsData on incidence of fatal ICH from 1 June 2012 to 31 May 2014 were extracted ...

Purpose: There has been growing interest in the association between periodontitis and systemic disease. In recent years, however, inconsistent results have also been found by case-control studies for the role of periodontitis in the development of oral cancer. This study aimed to examine whether periodontitis was an independent risk factor for oral cancer with a ≥75-year age group cohort.

Materials and Methods: Between January 2010 and December 2014, 1385 patients aged ≥75 years who ...

Gelatin-methacryloyl (GelMA) has received extensive attention in tissue engineering because of its low antigenicity, suitable biodegradability, and similarity to ECM. However, it is still a challenge to induce in-situ bone regeneration for bone defects due to the absence of osteogenic factors or other mineral ions. In this study, a novel injectable organic–inorganic nanocomposite GelMA hydrogel system doped Sr-substituted xonotlite (Sr-CSH) nanofibers was developed. The integration of ...

BACKGROUND: The maxilla position is essential for the aesthetic and functional outcomes of orthognathic surgery. Previous studies demonstrated the advantages of patient-specific implants in orthognathic surgery. However, more data are needed to confirm the superiority of patient-specific implants over surgical splints created with computer-aided design/computer-aided manufacturing (CAD/CAM). This randomized controlled trial aimed to compare the accuracy of patient-specific implants and ...

Micrognathia is a common craniofacial deformity which represents hypoplastic development of the mandible, accompanied by retrognathia and consequent airway problems. Usually, micrognathia is accompanied by multiple systematic defects, known as syndromic micrognathia, and is in close association with genetic factors. Now, large quantities of pathogenic genes of syndromic micrognathia have been revealed. However, how these different pathogenic genes could lead to similar phenotypes, and ...