ABSTRACT
BACKGROUND: Silk fibroin film showed an anti-coagulated blood activity following sulfurous acid treatment; however, its flexibility and anti-tension were poor. If the silk flbroin film was coated on small-caliber expanded poly(tetrafiuoroethylene) (ePTFE) vascular grafts prior to surface sulfonation, the adverse effects were improved and the blood compatibility of ePTFE vascular grafts were remarkably enhanced. OBJECTIVE: To research the preparation of ePTFE vascular grafts applied by surface sulfonation of silk flbroin film by low temperature plasma treatment. METHODS: The ePTFE vascular grafts were treated with low temperature plasma and coated on the surface of silk fibroin. The compound was then sulfonated with low temperature plasma. The ePTFE vascular grafts were considered as the controls to detect contact angle and sulfonation. RESULTS AND CONCLUSION: The contact angle was decreased gradually form 87.7°to 65.1° following low temperature plasma treatment. Moreover, the contact angle was 106.2° following coating silk flbroin film and 92.9°following sulfonation. X-raylight-electron spectrometer demonstrated that percents of sulfur element on the surfaces of the combined blood vessel was 2.89%, respectively, while that of the control film was only 0.12%. The X-ray light-electron spectrometer also showed that most of the sulfur element were sulfonic group (-SO_3H). The results suggested the feasibility of the preparation of the combined blood vessel.
ABSTRACT
Objective To study the effect of the procedure of oral care on the oral implantology.Methods This study was designed to compare two groups:the experimental group and the control group applied with different nursing procedure,each group comprised with 30 patients.The effect of the nursing procedure on the success rate of implantation,the degree of patient satisfaction,nursing efficiency and the maintenance of equipments were observed and compared.Results The Success rate of implantation of both the experimental group and the control group had no significant difference but the degree of patient satisfaction and the nursing efficiency of the experimental group was significantly better than the control group,the experimental group had advantages in the maintenance of equipments compared with the control group.Conclusions Nursing procedure has an important impact on the oral implantology and is worthy of clinical promotion and reference.