Evaluation of the treatment effect on sinus elevation and implant restoration in cases with odontogenic maxillary sinusitis after tooth extraction / 口腔疾病防治

Objective@#To investigate the clinical effects of sinus elevation surgery and implant restorationdue to insufficient bone massafter tooth extraction in patients with odontogenic maxillary sinusitis (OMS) and to provide a reference for use in clinical practice.@*Methods@#This study was reviewed and approved by the Ethics Committee, and informed consent was obtained from the patients. Forty-five teeth were extracted from patients with OMS in the maxillary posterior area (the study group). Sinus elevation and implantation were performed due to insufficient bone height in the implant area 6-8 months after tooth extraction in the study group. Forty-eight teeth were extracted from patients without "OMS" in the maxillary posterior area (the control group), and sinus elevation and implantation were performed due to insufficient bone height in the implant area 6-8 months after tooth extraction inthe control group. In the study group, 13 cases of discontinuous maxillary sinus floor bone and residual alveolar bone height of the maxillary sinus floor less than 4 mm were addressed with lateral wall sinus elevation, and the other 32 cases were addressed with crest-approach sinus elevation. In the control group, 8 cases of residual alveolar bone height less than 4 mm in the maxillary sinus floor were addressed with lateral wall sinus,and the other 40 cases were addressed with crest approach sinus elevation. Restorations were placed 6 to 8 months after surgery. The patients were followed up 21 days, 3 months, and 8 months after implantation and every 6 months after the placement of the restorations. The sinus bone gain (SBG), apical bone height (ABL) and marginal bone loss (MBL) were statistically analyzed 24 months after the restoration.@*Results@#The average preoperative mucosal thickness in the 45 patients in the study group was (1.556 ± 0.693) mm, which was significantly larger than that in the control group (1.229 ± 0.425) mm (P<0.001). There were no perforations in either group. Twenty-four months after restoration, there was no significant difference in the SBG, ABH or MBL between the two groups (P>0.05).@*Conclusion@#After the extraction of teeth from patients with OMS, the inflammation of the maxillary sinus decreased, and the bone height and density in the edentulous area were restored to a certain degree. The effects of sinus floor lifting surgery and implant restoration do not differ between patients with and without OMS.

Clinical effect evaluation of palatal free gingival flaps restoration applied to anterior maxillary gingival defect after epulis resection / 口腔疾病防治

Objective@#To evaluate the effect of palatal free gingiva in anterior maxillary defect restoration after epulis resection. @*Methods@# 22 cases were included in this study. Palatal free gingival flap was prepared to restore anterior maxillary defect after epulis resection. Clinical effect was evaluated according to gingival margin, gingival papilla index and modified sulcus bleeding index. @*Results @#Satisfactory clinical effect was achieved in all 22 cases, with adequate height, thickness, fullness and texture. @*Conclusin @#Palatal free gingival flap was clinically effective in anterior maxillary defect treatment after epulis resection, with satisfactory aesthetic clinical effect.

[Design and Implementation of Intelligent Mobile ECG].

This paper introduces the development of intelligent mobile ECG, and internet big data sharing resources to further improve the remote diagnosis of medical service platform , to enhance the level of mobile medical standard and control medical risks.

[A New Exploration of Security Event Monitoring, Assessment and Control Methods of Using Medical Equipment].

Based on the research of risk assessment of medical equipment safety and operation to formulate evaluation criteria and methods of how to use the practical management work. Objective to evaluate the practical method is to use and the risk of adverse events of medical equipment in operation risk in order to find the risk, control risk, ensure safety in time, so that Improve the level of risk management of medical equipment.

[The digital information platform after-sale service of medical equipment].

This paper describes the after-sale service of medical equipment information management platform, with large data sharing resources to further enhance customer service in the whole management process of medical service, to strengthen quality management, to control medical risk.

[Design and application of implantable medical device information management system].

Through the establishment of implantable medical device information management system, with the aid of the regional joint sharing of resources, we further enhance the implantable medical device traceability management level, strengthen quality management, control of medical risk.

[2011 after-service customer satisfaction survey of monitoring devices in Shanghai area].

In 2011, Shanghai Medical Equipment Management Quality Control Center launched the fifth after-sale service satisfaction survey for medical devices in Shanghai area. There are 8 classes medical devices involving in the survey. This paper demonstrates the investigation results of monitoring devices which are from different manufacturers.

[The study of regional specification for the medical equipment acceptance].

Standardization of medical equipment acceptance regional specification is elaborated., by virtue of regional resources to further improve the acceptance level, to strengthen the quality management of medical devices is strengthened through the improvement of acceptance level with regional shared resources.

[2011 Shanghai customer satisfaction report of DSA/X-ray equipment's after-service].

To improve the manufacturer's medical equipment after-sale service, the fifth Shanghai zone customer satisfaction survey was launched by the end of 2011. The DSA/X-ray equipment was setup as an independent category for the first time. From the survey we can show that the DSA/X-ray equipment's CSI is higher than last year, the customer satisfaction scores of preventive maintenance and service contract are lower than others, and CSI of local brand is lower than imported brand.

[The development of hospital medical supplies information management system].

OBJECTIVE: The information management of medical materials by using high-tech computer, in order to improve the efficiency of the consumption of medical supplies, hospital supplies and develop a new technology way to manage the hospital and material support. METHODS: Using C # NET, JAVA techniques to develop procedures for the establishment of hospital material management information system, set the various management modules, production of various statistical reports, standard operating procedures. CONSEQUENCE: The system is convenient, functional and strong, fluent statistical functions. It can always fully grasp and understand the whole hospital supplies run dynamic information, as a modern and effective tool for hospital materials management.

Application of algebraic iterative reconstruction in imaging reconstruction of SPECT / 中国医疗器械杂志

By comparing routine FBP with algebraic iterative reconstruction, this study exploit the effect of the two SPECT reconstruction techniques on the ratio of Target/Background (T/B) and image noise. The result of research on model and clinical cases showed that the technique of OSEM could increase T/B ratio by 1.5% (heart), 3.3% (bone), 1.4% (brain). No obvious difference in image noise existed between OSEM and FBP. Compared with FBP, OSEM could improve T/B value in bone focus more significantly. Under the same injection dosage, OSEM could increase the speed of image collection by more than one time without changes in image quality and T/B ratio. The result suggested that function and clinical application of SPECT would significantly improved by substituting routine FBP with OSEM.

[Target volume calculation methods based on PET-CT images].

The applications of PET-CT have developed from qualitative analysis to quantitative analysis. Target volume is important for tumor biological volume defining, tumor isotope therapy, organ function evaluation, acceptor affinity calculation, and pharmaceutical metabolic kinetics. Many factors work on the target volume calculation, such as PET image acquisition mode, scatter correction, attenuation correction, reconstruction method, image display mode, positron pharmacy. The commonly-used methods of target volume calculation are background-threshold, max threshold, and background-max threshold. In this article we will discuss about the methods of target volume calculation.

[Innovative ultrasound transducers-purewave crystal technology and its applications].

This article is to introduce the dramatic improvements in efficiency, sensitivity and bandwidth of the ultrasound transducers--PureWave Crystal Technology.