BACKGROUND: In recent years, increasing studies focus on digital complete denture. Digital complete denture has many advantages such as reducing patient visit times, saving chairside time, improving manufacturing precision in comparison with traditional complete denture.OBJECTIVE: To review the development of technology and clinical application of digital complete denture,and to analyze the existing insufficiencies.words were CAD/CAM complete dentures, digital complete dentures, rapid prototyping dentures, manufactured dentures, computer dentures, machined dentures, designed dentures, milled dentures, artificial tooth, 3D scanning, 3D printing in English and Chinese, respectively.RESULTS AND CONCLUSION: Currently, the production of complete denture using digital technology cannot be fully realized. During digital impression, to scan the traditional dental casts is still the mainstream technology for data acquisition technology. Future investigations on scanning the patient alveolar ridge and its surrounding soft tissue directly and digitally recording the jaw relation directly are warranted. To develop 3D-printed artificial teeth and base materials with proper strength, aesthetics, comfort levels as well as 3D printing of the artificial tooth and the base as the final denture will make digital denture technology more mature.

To explore the anti-atherosclerotic mechanism of estrogen and especially observe the effect of estradiol on the content of cholesterol in J774a.1 mouse mononuclear/macrophage-derived foam cells which were incubated with oxidized low-density lipoproteins (ox-LDL). J774a.1 mouse mononuclear/macrophages were incubated with ox-LDL or with both ox-LDL and estradiol (1, 0.1 or 0.01 micromol x L(-1)). Oil red O staining was used to observe the formation of foam cells, and cholesterol oxidase fluorometric was used to determine the content of cellular cholesterol content. Western blotting and RTFQ-PCR were used to observe the expressions of scavenger receptor class B type I (SR-B I ) in J774a.1 foam cells. Compared with the control cells, J774a.1 mouse mononuclear/macrophage-derived foam cells showed significantly increased contents of total cholesterol and cholesterol ester (P < 0.001) and decreased SR-B I mRNA expression (P < 0.01). Estradiol treatment significantly lowered the contents of total cholesterol and cholesterol ester (P < 0.05), and increased SR-B I protein and mRNA expression (P < 0.01) in the foam cells in a dose-dependent manner. Estradiol can inhibit the formation of mononuclear/macrophage-derived foam cells by decreasing the contents of total cholesterol and cholesterol ester and up-regulating the expression of SR-B I in the foam cells.

Objective To investigate effects of 1,25-Dihydroxyvitamin D3 on the cell cycle and apoptosis of K652 cells. Methods Vitamin D receptor (VDR) expression was identified by western blot analysis. Cell growth, apoptosis and cell cycle were evaluated by MTT assay, acridine orange/ethidium bromide (AO/EB) and flow cytometry. Results VDR was present in K562 cell nucleus. 10-8mol/L 1, 25-Dihydroxyvitamin D3 could markedly inhibit K562 cells growth and induced cell apoptosis. Most of cells were arrested in G2/M phase, the ratio of apoptosis increased from 4.1% in control group to 26.5 % in treatment group (P<0.01). Conclusion 1,25-Dihydrexyvitamin D3 exhibited obvious inhibitory effects on cell proliferation and cell cycle, and induced apoptosis in K562 cells.

Objective To study the effect of lung cancer prevention in Baoji city, one of the cities with high lung cancer morbidity in China. Methods To investigate the mortality of lung cancer from 1992 to 1996 in Baoji and compare it with the data of Baoji in 1970s and the current data in whole China. Information of lung cancer pa- tients was collected from the Malignant Tunout Monitoring Station in Baoji. To investigate by sampling survey the status of smoking of Baoji population based on the principle of clustering random sampling. Information about air pollution in 1980s and 1990s was obtained from the Environmental Monitoring Station in Baoji. ResultsComparing with 1970s, the crude mortality rates of lung cancer in Baoji in 1992～ 1996 increased both in males and females,but the range was narrower than that in whole China. Ajusted mortality rates of lung cancer didn＇t change in females but decreased in males. However, either crude or adjusted mortality rate was lower than the average level of the whole country. The status of air pollution has been improved dramatically since the early 1980s in Baoji. So far, except to- tal suspended particles (TSP), NOx and SO2 levels have reached the Criteria of Air Quality of China. But the smoking rate was still higher. ConclusionThe prevention of lung cancer in Baoji is effective, but the role of measures needs further study. Baoji should not be considered as a city with high lung cancer morbidity in our country at present.

Objective To evaluate the clinical effect of the homemade traditional Chinese medicine bathing prescription combined with Thymalfasin and Isotretinoin treatment for Verruca Plantaris.Methods A total of 120 patients with Verruca Plantaris were randomly divided into 3 groups according to the random number table method (each group 40). The drug therapy group was given Thymalfasin and Isotretinoin to treatment; and the Chinese medicine washing group was given traditional Chinese medicine wash-out on the basis of drug therapy; and the physical therapy group was given liquid nitrogen freezing treatment on the basis of drug therapy. All the groups were treated 12 weeks and follow-up 3 months. Four weeks were a course, and a total of 3 courses. After the treatment, the symptom grading scores (number of skin lesions, the size of skin lesions, the degree of pain and the quality of life) was compared, and the clinical effect rate was evaluated and the recurrence rate was observed.Results Twelve weeks after treatment, Chinese medicine washing group total effective rate was 97.5% (39/40), drug treatment group 87.5% (35/40), and physical treatment group 90.0% (36/40). The Chinese medicine washing group total effective rate was superior to the drug therapy and physicaltherapy groups (Z values were -3.463,-3.122,P values were 0.001, 0.002). after treatment, the number of lesions scores (2.0 ± 1.1 vs. 2.8 ± 1.5, 2.7 ± 1.6,F=3.787), the size of the lesion scores (2.3 ± 1.7 vs. 3.2 ± 1.3, 3.1 ± 1.3, F=4.657), pain degree and the quality of life scores (0.4 ± 0.5 vs. 1.0 ± 1.2, 1.0 ± 1.0,F=5.353) in the Chinese medicine washing group were significantly higher than those in the drug therapy and physical therapy groups (P<0.01). After follow-up period, the recurrence rate of Chinese medicine washing group was 10.3% (4/39), the drug treatment group 25.7% (9/35), the physical therapy group 41.7% (15/36). The difference among 3 groups was statistically significant (Z=-3.188,P<0.01).Conclusions The traditional Chinese medicine combined with Thymalfasin and Isotretinoin could reduce the number of skin lesions, narrow the range of skin lesions and reduce the degree of pain, and improve the quality of life.

Objective: To find out the current situation of the reproductive health about countrywomen in west of China,and explore the factor of the reproductive health under social medicine theory framework.Methods: Summarize literature about women reproductive which have been done recently,and do 608 samples survey in Xi'an of Shaanxi,which is about the current situations of social economic,reproductive health,gynecological diseases and mental health.Results: The research clarified the primary connotation about the reproductive health of countrywomen,and identified the current situation of countrywomen reproductive health in Shaanxi province of China.Conclusion: The situation of countrywomen reproductive health is far away from the demand of strategic target of "Everyone enjoys the reproductive care since 2015",and the countrywomen are on the hip in birth control,bearing culture,acquirement of health knowledge and primary diathesis.

Objective: to measure anxiety status and explore integrated factors about anxiety of countrywomen in Shaanxi, then put forward to suggestions for improving women's mental health under the bio - psycho - social medical model. Methods: A cross - sectional survey was adopted. 592 married countrywomen volunteers were selected by cluster random sampling from Chang'an district of Xi'an in Shaanxi province. Self - rating anxiety scale, Self - rating depression scale and Life events scale were used for assessment of mental health of the subjects. Additional, gynecologic examinations were done to measure personal reproductive health status. Results: The facts of mental status of Shaanxi rural women brook no optimism. Among the 592 samples that were investigated in current study, 25. 3% have anxiety symptoms. For the study population, the average total index score of SAS was 34. 34. Further analysis revealed that dysmenorrhea, menarche age and depression are main risk factors influencing women's anxiety status. In addition, married countrywomen's anxiety is related to sexual intercourse satisfaction, uterus motion and per capita health care spending, etc.

Objective To analyze the characteristic of Yunnan unexpected sudden death (YUSD) cases by pathological diagnosis of arrhythmogenic right ventricular cardiomyopathy (ARVC),in order to offer clue for ARVC etiologic research of YUSD.Methods The pathological diagnosis results of 9 cases of sudden death of ARVC in Yunnan,as well as epidemiological investigation data,were used to comprehensively analyze the pathological features of the pathological diagnosis of ARVC in Yunnan.Results The 9 cases including 8 females and 1 male,aged 16-47 years.The sudden death time was from June to August,mainly distributed in 8 families from the disease seriously ridden 7 villages.Three of them had a genetic history of family YUSD,2 cases had a history of mental stimulation,1 case had eaten Trogia venenata;and acute symptoms and signs were palpitation,chest tightness,shortness of breath,and loss of consciousness.Pathological observations were the typical ARVC change,mainly right ventricular lesions,with different degrees of cardiac enlargement and extensive adipose tissue infiltration in the ventricular wall.Among them,6 cases of fat infiltration almost reached the full thickness of the heart wall.In addition to the pathological changes of ARVC,8 cases were accompanied by one or several pathological changes in myocarditis,cardiac dysplasia,nephropathy,pulmonary edema,pneumonia and pancreatitis.Of the 9 cases,5 cases were diagnosed with ARVC,2 cases with ARVC and pulmonary edema,1 case with ARVC and acute hemorrhagic necrotizing pancreatitis,and 1 case with ARVC and Trogia venenata poisoning.The clinical examination abnormalities of the family members of the cases mainly showed arrhythmogenic electrocardiography changes and abnormal myocardial enzymes.Conclusions The nine cases have showed typical epidemiology characteristics of YUSD,and cardiachistological changes are consistent with the ARVC pathological diagnostic criteria.A part of YUSD cases may be caused by ARVC,and the inference will be proved by cadaveric pathologic examination and related pathogenic gene detection.

Objective To understand the prevalence rate and related factors of chronic kidney disease (CKD) among elderly people aged more than 65 years old in the 66th regiment of the fourth division of A Crops in Xinjiang .Methods A total of 2 030 elderly people aged more than 65 years old in the 66th regiment of the fourth division of XPCC were distributed in 6 communities . Totally 334 permanent residents aged more than 65 years old were chosen from 2 communities by the stratified random sampling method .The renal injury indicators and related factors were detected .Results Among 329 residents with intact data ,after the age correction ,the prevalence rate of albuminuria ,hematuria and renal function decrease were 22 .2% ,14 .2% ,4 .9% ,respectively .The prevalence rate of CKD in this group was 32 .8% ,CKD stage 1―3 were dominated .The awareness rate was 15 .1% .The multiva‐riate Logistic regression analysis showed that gender and hypertension were independently associated with CKD .Conclusion The prevalence rate of CKD among elderly people aged over 65 years old in the 66th regiment of the fourth division of this Crops is high‐er .The related factors are gender and hypertension .

Objective:To expound the pathogenesis relationship between Yunnan unexplained sudden death (YUSD) and desmosomal protein gene mutations of arrhythmogenic right ventricular cardiomyopathy (ARVC).Methods:Four YUSD cases families by ARVC pathological diagnosis were selected, to collect heart blood samples of YUSD cases by ARVC pathological diagnosis( n=3), venous blood samples of immediate relatives with genetic relationship (case relatives, n=4) and control population without genetic relationship ( n=7). DNA was extracted for PCR amplification and sequencing of a total of 97 exons of the ARVC desmosomal protein genes plakophilin 2 (PKP2), desmoplakin (DSP), desmoglein 2 (DSG2), desmocollin 2 (DSC2), and junction plakoglobin (JUP), and the mutations of the 5 genes were analyzed in combination with the genetic family. Results:DSP gene mutations were found in all YUSD cases by ARVC pathological diagnosis and case relatives, and PKP2, DSG2, DSC2 and JUP genes mutations were found in 1 person each. The same person carried 1-3 genes mutations. DSP gene existed 4 exon mutation sites, and 1 of which was a newly discovered heterozygous synonymous mutation c.4014 C>A (p.A1338A). PKP2 gene existed 2 exon missense mutation sites in 1 YUSD case by ARVC pathological diagnosis, and 1 of which was a newly discovered heterozygous mutation c.739 G>C (p.G247R). One heterozygous missense mutation site c.799 G>A (p.A267T) of JUP gene was newly discovered, and the predictive value of protein function was 0.963, the possibility of abnormal changes in protein function was high. DSG2 and DSC2 genes each had one mutation site. However, no mutation was found in control population.Conclusions:Both YUSD cases by ARVC pathological diagnosis and case relatives carry ARVC desmosomal protein genes DSP, PKP2, DSG2, DSC2 and JUP mutations. There may be a certain pathogenesis relationship between YUSD and ARVC desmosomal protein gene mutations.