To understand the current situation of public health service system by using diect network report,system report and questionaire surey, so as to provide reasomable suggestion for the existing problems.

Objective: To obtain the data of the surfaces of stand ar d posterior teeth crowns with an improved measurement system, so as to lay the f oundation for fabrication of dental prosthesis with computer aided design and la ser solid forming technology. Methods: Standard posterior teeth models were measured with a numerical controlled miller and a new data col lection system by cutting and scanning layer by layer, and the 3 dimension (3 D) shape of the models was reconstructed by image processing with a special soft ware. Results: Data of image profile and 3D shape of sixte en posterior teeth crowns were obtained. Precise configuration was acquired.Conclusion: Data of image profile can be easily and clearly ob tained by the improved measurement system with no measuring blind spot.

OBJECTIVE To evaluate the methods of improving the air quality in the outpatient departmant area.METHODS The amount of outpatients in different time periods in the morning were calculated in the specialist consulting area;the bacteria in the air collected from the clinic room were collected and cultured in general nutrition agar medium and compared the efficacy for the improvement of air quality between the new and the old methods.RESULTS The air quality of the specialist consulting area was improved significantly through the ventilation and cleaning-floors depending on the amount of outpatients(P

Objective: To reconstruct 3D shape of upper edentulous jaw f or the design of a digital model of palatal metal plate of upper complete dentur e. Methods: Standard edentulous jaw models were measured with a numerical controlled miller and a new data collection system by cutting and sca nning layer-by-layer, the 3D shape of the models was reconstructed by image pr ocessing with special software. Based on these data, a palatal metal plate of u pper complete denture was designed by using SURFACER softerware.Results: Data of upper edentulous jaw models and a palatal metal plate of upper c omplete denture were obtained.The error between basal surface of the plate base and uper endentulous jaw was 0.0245 ?0.0267 mm. Conclusion:E dentulous jaw can be reconstructed by three-dimensional measurement, the design ed palatal metal plate of upper complete denture will be helpful to the further Laser Solid Forming.

Objective:To investigate the microstructure and mechanical property of titanium parts made by laser solid forming technology. Methods: Titanium parts were made by laser solid forming technology; microstructure and elements were observed by SEM and spectrum analysis. The mechanical property of laser formed titanium and TA2 titanium were measured by Omnipotent testing machine. Results: The microstructure of titanium parts fabricated by laser rapid forming has columnar crystals with regular and epitaxial growth. The inner structure is dense and acicular structure distributed uniform at all field with width about 3-4 ?m; No obvious impurity elements were observed; the tensile-strength and yield strength of titanium parts is obviously superior to the standard of TA2. Conclusion: The microstructure of titanium parts made by laser solid forming can be obviously improved and mechanics performance was greatly improved. Those titanium parts may be used for dental restoration.

Objective To evaluate this disease' s incident trend for Shanxi province through hospital-based statistics. Methods Breast cancer data was obtained from the department of radiology in Shanxi cancer hospital for the period 2005-2007. Results Between 2005 and 2007, the numbers of women who accepted mammography rapidly increased from 533 to 1975. 62 women had been diagnosed as breast cancer in 2005, while this number had reached to 400 in 2007. The proportion of breast malignancies during this three year periods had statistically increased with 11.6 %, 17.8 %, and 20.3 % respectively (P<0.001). The mean age of breast cancer patients was older than benign disease patients (50 vs 42.8, P<0.001). The highest breast cancer age group was those aged 45 to 54 (37.6 %). Left breast cancer was higher than right side (53.4 % vs 46 %). Most histological type was invasive ductal carcinoma (78.95 %). The proportion of invasive lobular carcinoma and duetal carcinoma in situ were 8.7 % and 5.4 % respectively. Conclusion Breast cancer incidence rate has been increased in our city. These results are consistent with previous similar studies. Thus, it is essential to establish population cancer incidence registration and develop clinical data system. This will result in better understanding of cancer incidence trends and benefit in the evaluation of the effective cancer control measures.

In order to understand the cost of cancer in rural area, to evaluate the cost burden, the project content and treatment status. Typical sampling and random sampling survey are combined to investigate and account major expenditure and economic loss of cancer treatment and related items, analyzes its rationality and scientific, provide references for improving the level of cancer prevention and treatment.

In order to reduce heavy burden of cancer on patients, families and social, it needs to raise special funds, apply regular screening for 45~65 years old group, achieve early detection and treatment of cancer, reduce medical expenses and economic loss of cancer greatly, reduce mental burden, establish the cancer prevention input-output model, calculates the economic benefits up to 1:9.89. It is proposed to establish the organization, improve the mechanism, expand the overall costs, secure the screening and popularize early detection and treatment.

Objective To evaluate the use of spiral enteroscopy in diagnosis and treatment of smallbowel diseases.Methods The data of 8 patients who underwent spiral enteroscopy from July to September 2009 were retrospectively studied.The variables including maximal insertion depth,total procedure time,complications,and outcome were evaluated.Results The average maximal depth of intubation was 2.2 m beyond the Ligament of Triez (0-3.6 m beyond Ligament of Triez),with a mean procedure time at 41 min (25 to 77 min).Small bowel Crohn's disease was diagnosed in 2 cases with biopsy suggesting active inflammation and granular formation.Small intestinal tumor was detected in 1 patient with pathological finding of high grade dysplasia.Jejunal ulcer was detected in 1 patient.Multiple polyps were found in 1 patient after jejunal anastomosis,which were then treated with endoscopic argon plasma coagulation (APC).No abnormalities were found in 3 other patients.No complications occurred during and after the procedure.The maneuver of spiral enteroscopy and APC were same as that of balloon enteroscopy.Conclusion Spiral enteroscopy is simple and convenient to operate,which is of great potential in clinical use.

Objective To evaluate the predictive value of morphology of superficial depression in estimation of histology and invasive depth in colorectal neoplasia by using magnifying chromo-endoscopy.Methods Flat or depressed and sessile eolorectal lesions which were indicated for endoscopic mucosal resection (EMR) were consecutively collected. Depressed lesions were classified into type 1 (star-like) and type 2 (round) according to the morphology of depressive areas in the colorectal neoplasia with magnifying ehromoendoscopy. The relationship between morphologic classification with histology and invasive depth was studied with reference to pathological diagnosis after EMR. Results Ninety lesions including 25 sessile and 65 flat were resected with EMR. Lesions with central depression (54. 4%,49/90) were more likely to have high-grade dysplasia (HGD) or cancer than those without ( 51.0% vs. 17. 1%,P＜0. 001 ). Depressive lesions of type 2 were more susceptible to have HGD or cancer than those of type 1 (89. 5% vs. 26. 7%,P＜0. 001 ). The overall accuracy of depression morphology for distinction between lesions of superficial submueosal (m-sm1) and deep submucosal (sm2-sm3) invasion was 83. 7% (41/49). Conclusion The morphology of superficial depression on colorectal neoplasia is highly correlated with the histology and invasive depth,which facilitates the EMR treatment.