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BACKGROUND To date, there has been no large-scale survey of geriatric depression (GD) involving both rural and urban areas in China using standardized assessment tools and diagnostic criteria. This study aimed to determine the 12-month and lifetime prevalence rates of GD and sociodemographic correlates in urban and rural regions of Beijing, China.MethodA(More)
A convenient method for fetal murine premeiotic germ cells to develop into oocytes in vitro has been established. Fetal ovaries from mice, collected 12.5 d postcoitus (dpc), were organ-cultured in vitro using a medium for organ growth, and the developmental potential regarding oocyte formation was determined. After 28 d of culture, premeiotic female germ(More)
PURPOSE The purpose of this study was to investigate the characteristic and contributory factors of mandibular fractures with abnormal union in China, aiming to produce guidelines to facilitate the management of mandibular fractures so that this complication may be avoided. PATIENTS AND METHODS In this retrospective review, the records of all patients who(More)
BACKGROUND The aim of the present study was to investigate the effect of tissue engineering bone composed of bone marrow-derived osteoblasts and demineralized bone in repairing mandible defect. METHODS Bone marrow-derived osteoblasts of 20 rabbits were cultured and seeded into scaffold of allogeneic demineralized bone to construct tissue engineering bone(More)
The purpose of this study was to investigate the underlying mechanism in favorable prognosis following pediatric condylar fractures managed by closed procedures. Seventy-five 1-month-old male Wistar rats were used in this experiment. Unilateral medially rotated condyle fracture in growing rats was adopted as the condyle fracture model to investigate the(More)
PURPOSE The changes in the characteristics of maxillofacial fractures in pediatric patients during the past 20 years in China were investigated in an attempt to find valuable insight into the future prevention of such fractures. PATIENTS AND METHODS In this retrospective study, all pediatric patients age 0 to 12 years treated for maxillofacial fractures(More)
Eosinophilic granuloma (EG) is the localized and mildest form of histiocytosis-X group of diseases. In this study, 22 patients of pathologically proven EG involving the jaws were retrospectively studied concerning the clinical and radiographic presentation. The clinical and radiographic presentation of the 22 cases was quite varied, and the accuracy of(More)
OBJECTIVE To analyze the clinical feature of temporomandibular joint (TMJ) ankylosis and to investigate the advantage and disadvantage of all kind of surgery methods of TMJ ankylosis for supplying references to the treatment of TMJ ankylosis. METHODS Aetiology, sex, age at time of treatment, clinical features, radiographic findings, surgical treatment was(More)
Multiple site comminuted mandibular fractures are the result a concentrated and prolonged force on a region of the mandible. The purpose of this retrospective study was to investigate the clinical characteristics of these fractures in China, as well as review our experience with these types of fractures. Twenty-one patients treated for multiple site(More)