Objective To investigate the clinical effect of resin restoration and porcelain veneer in the treatment of anterior teeth gap, in order to improve the level of clinical treatment.Methods120 cases of anterior teeth gap patients from June 2015 to December 2016 were divided into two groups, the control group was treated with resin restoration, the observation group was treated with porcelain veneers, the effect of the two groups was compared.ResultsThere was no significant difference in recovery body integrity and color satisfaction between the two groups at three months after operation;While the edge suitability satisfaction rate of patients in the observation group was 100.0%, postoperative sensitivity satisfaction rate was 98.3%,gingival inflammation satisfaction rate was 100.0%, which was significantly higher than that of the control group(90.0%, 83.3%, 86.6%), the difference between the two groups were statistically significant (P<0.05);After 12 months later,the recovery body integrity satisfaction rate in the observation group was 100.0%, 90.0% in the control group, the color satisfaction was 100.0% in the observation group and 90.0% in the control group, and the difference was statistically significant (P<0.05), There was no significant difference between the two groups were at the edge of the suitability of satisfaction, satisfaction rate of postoperative sensitivity, gingival inflammation satisfaction rate.ConclusionThe porcelain veneer teeth gap before significant clinical effect, but to make individual tooth preparation.

Objective To observe the expression of 7 cytokeratins in skin epithelial tumors and to assess their diagnostic value. Methods The expression of 7 cytokeratins, including cytokeratin 7(K72.2), cytokeratin 8(C-51), cytokeratin 10(DE-K10), cytokeratin 14(LL002), cytokeratin 17(E3), cytokeratin 18(DC10)and cytokeratin 19(KS19.1), was assessed by immunohistochemical staining (S-P method) in 54 cases of different skin epithelial tumors and 20 normal skin specimens. Results Of 54 cases studied, 10 were squmous cell carcinoma (SCC), 10 basal cell carcinoma (BCC), 19 hair follicle tumor, 2 sebaceous carcinoma, and 13 sweat gland tumor. The expression patterns and distribution of the 7 cytokeratins were different in different skin epithelial tumors. Most of the tumor cells stained diffusely for cytokeratins in SCC, BCC and hair follicle tumor; different cytokeratins expressed in different parts of each of the subtypes of sweat gland tumors. Conclusions Analysis of a selected group of cytokeratins may be helpful in the diagnosis and differential diagnosis of SCC, basal cell carcinoma and skin adenexal tumor.

Objective To investigate the clinical pathological features and imaging findings of primary pulmonary sarcomatoid carcinoma. Methods Fifteen patients with a pathologically verified primary pulmonary sarcomatoid carcinoma were reviewed retrospectively. Fourteen patients had CT examinations and I0 of them had contrast-enhanced CT scan. Nine patients had chest plain films. Results Of 15 patients, 14 were peripheral and 1 was central, diameters ranging from 2.5 cm to 9.5 cm. Five located in the upper, 3 in the middle and 4 in the lower lobe of the right lung. The other 3 located in the upper left lobe. All cases presented with a spheroid solid lung mass on chest plain film and CT examinations. Three had irregular eccentric cavities. Six were well demarcated, 2 were ill defined, 4 were lobulated and 3 were speculated. The central case had obstructive pneumonia and showed ill defined. Ten showed irregular peripheral heterogeneous contrast enhancement. The center part of the tumor showed no enhancement or inhomogeneous enhancement. Seven had thoracic wall or pleural invasion, 4 had hilar or mediastinal lymphopathy and 2 had metastasis. Histopathologically, 8 were pleomorphic carcinoma, 2 were spindle cell carcinoma, 3 were giant cell carcinoma and 3 were pulmonary blastomas. Conclusion The X-ray and CT findings of the primary pulmonary sarcomatoid carcinoma are not specific. The clinicopathologic features were the evidence of diagnosis.