Objective:A modificated emergency medical care system was designed based on business process reengineering to offer the emergency patients a more satisfactory medical service.Methods:From Jan.to Mar.in 2005 and the same period in 2006,200 emergency patients were investigated(100 cases for each time period) in a general hospital.The data of the 100 patients acquired in 2005 were served as the control group and those of the other 100 patients acquired in 2006 were served as the research group.A series measure of emergency medical service,such as computerizing administration of the patient history,utilizing the network transmission and sharing system of pictures,automatizing price system and re-integrating auxiliary examination labs,were applied in the aim of shortening the waiting times for charging,examination,etc.Results:Better satisfaction to the advanced emergency medical service process was found in the research group.The patients' waiting times for receiving diagnosis and treatment,laboratory examinations and paying fees in the research group were statistically shortened compared to those in the control group(P

Self-ligating brackets have been developed for decades. Now more and more orthodontists are using self-ligating appliance systems, because they have the following advantages over conventional orthodontic brackets: less friction between the archwires and the brackets;simple clinical operation;comfortable for patients. This review introduces the self-ligating brackets' feature, classification and several self-ligating brackets applied in clinic.

Objective:To examine the soft tissue changes of early skeletal Class III malocclusion patients after maxillary protraction treatment. Methods:60 skeletal anterior crossbite patients, 27 males, 33 females in the late mixed dentition were selected. The age ranged from 8 to 11 years. Mean age was 9.3 years. The patients were divided into treatment group and control group. Average treatment time was 12.1 months. Pre- and post-treatment lateral cephalograms of both groups were traced and analyzed. Difference between pre- and post-treatment was analyzed with paired t-tests. Results:After treatment, Ns-Sn-Pos, Ns-Prn-Pos, Sn-S-Si and Cm-Sn-UL decreased significantly,while Sn-Ns-Si and UL-E increased significantly. No significant change was found in S-Ns-Sn and LL-E. Conclusion:Soft tissue profiles are significantly improved by maxillary protraction treatment in the late mixed dentition. The concave profiles were changed to straight or nearly normal profiles. The relationship among nose, upper lip, lower lip and chin become harmonious. The curve of the lips tends to be smooth and harmonious.

Self-ligating brackets have been developed for decades.Now more and more orthodontists are using self-ligating appliance systems,because they have the following advantages over conventional orthodontic brackets:less friction between the archwires and the brackets;simple clinical operation;comfortable for patients.This review introduces the self-ligating brackets' feature,classification and several self-ligating brackets applied in clinic.

Objective To find the changes and effects of nitric oxide synthase activity in atherosclerotic rabbit models. Methods Thirty rabbits were divided into 3 groups at random: control group, atherogenic diet group, balloon-injury+ atherogenic diet group. Three months later underwent pharmacological triggering with Chinese Russell’s viper venom and histamine to make the plaque rupture. Lipid concentrations and the levels of nitric oxide (NO), NOS and hydroxy radical (OH) in the serum were obtained at different period, and pathologic changes were observed. Results In atherogenic diet group and balloon-injury+ atherogenic diet group, serum lipid concentrations markedly increased, but the levels of NO did not show any difference. The activity of NOS and OH levels were obviously increased after the atherogenic diet. But it reduced after pharmacological triggering and plaque rupture. Conclusion In early period of atherosclerosis, NOS activity up regulated and endothelium functions were compensated. But, When the atherosclerotic plaques were unstable, the activity of NOS descended obviously and endothelium function goes into incompensation.

laparoscopic technology has been widely used in the fields of surgery such as general surgery etc. It has several advantages,such as directly showing abdominal organs,demonstrating operation procedure and being easy to make and spread operation video material. Laparoscopic system should be used for intern teaching in general surgery department to improve their learning and performance.

Objective To examine the effects of fixed appliance and micro-implant on the improvement of facial profile in patients with protruding.Methods 30 protruding cases were treated by fixed appliance and micro-implant.Cephalometric data before and after treatment were measured and analyzed to assess the effects.Results The upper incisors were retracted 6.5 mm.The upper lip was retracted 3.8 mm.The lower incisors were retracted 5.8 mm.The lower lip was retracted 5.6 mm.UL-E was retracted 3.21 mm.LL-E was retracted 3.67 mm.NLA was changed from 86.7°to 103.7°.The U1-SN,U1-Y,L1-MP,L1-Y,UL-Y,LL-Y,UL-E,LL-E,and NLA demonstrated significant differences between pre-and post-treatment.Conclusions Fixed appliance and micro-implant might retract the anterior teeth and lead to an improvement of facial profile.

Objective To establish a three-dimensional digitized visible model to meet the clinical and research needs.Methods The head of the volunteer was scanned by a cone beam CT (CBCT).The bone tissue,the facial soft tissue and the teeth were extracted from the cone beam CT raw data according to the different Houns field values.The 3D digital craniofacial model was reconstructed from the three tissues extracted from the CBCT original data.The 3D dental model with high resolution was acquired by scanning the dental cast with the laser scanner.The 3D facial model with texture was acquired by scanning the volunteer's face directly by other laser scanner.With the regis tration algorithm in 3D graphics,the 3D facial model with texture and the 3D dental model with high resolution were transformed to the same coordinate which was of the 3D digital craniofacial model.Results We acquired a complicated 3D craniofacial digital model which combined the teeth model with high resolution,the bone model and the face model with texture.Conclusions The method is able to accurately establish the craniofacial digital model.

Objective To observe the therapeutic effect on thymus radiotherapy in the patients with myasthenia gravis (MG).Methods The clinical data of 68 patients with MG treated by thymus radiotherapy (X ray radiotherapy in the deep for 22 cases, 60 Co treatment for 46 cases)in our hospital from 1957 to 1999 were analysed retrospectively.The patients were followed up long term.Results Total remission rate of patients with MG treated by radiotherapy was 90%.Clinical results were significant,the life quality of patients with MG improved greatly.The side effect with the skin injury for 10 cases and the alimentary canal symptom for 9 cases were found mostly.Conclusion The following patients can obtain obvious therapeutic effect with radiotherapy,they are those with poor efficiency to drugs,those with invasive thymoma during the operation,those with instable symptoms after the operation.

Objective: The topographical mapping technique of brain evoked potential was used to observe the changes of the functional activities in the cortical somatosensory area I (SⅠ) during imitating the sensation conduction along the Meridian (SCM). The formation mechanism of sensation conduction was discussed here. Method: 26 healthy adult volunteers were chosen as observe object. Cerebral electric signal processing system was used to record topographical mapping of evoked potential in SⅠ outside the skull. Soft paintbrush was used to slightly brush the Gall Bladder Meridian (GBM) to imitate the sensation conduction. Result: Evoking responses appeared in both foot and face representation areas in SⅠ of 11 healthy volunteers without conduction sensation during imitation of sensation conduction along the GBM (SCGBM), which coincided with the distribution of responses evoked in SI during sensation conduction along Meridian . 15 healthy volunteers were offered imitation of SCGBM as well as brushing through the upper arm additionally, while, the results showed that the evoking responses appeared in the foot, the upper arm and the face representation area of SⅠ. So, it formed a high potential response belt that was similar to the course occurred during the imitation of SCM. Conclusion: The external stimulation along the meridian course can change the distribution of evoking responses in SⅠduring stimulating point. The results provide experimental evidence for the supposition that “activation in sequence in periphery” is the decisive factor for the formation of SCM.