BACKGROUND:Currently, the implant surface is optimized to promote the osseointegration of artificial dental implants, which has become a research focus in recent years. But the femtosecond laser is less reported to modify the titanium surface so as to promote fibroblast proliferation and differentiation. OBJECTIVE: To observe the effect of femtosecond laser on the proliferation and differentiation of human periodontal ligament fibroblasts on titanium surface. METHODS: Human periodontal ligament fibroblasts were respectively inoculated on different titanium surfaces of the three groups (femtosecond laser group, TiO2 particle blasted group and pure titanium group). Then differentiation and proliferation of human periodontal ligament fibroblasts were observed. RESULTS AND CONCLUSION:There was a significant difference in the surface roughness among these three groups, and compared with the pure titanium group, the attached cels were more in the femtosecond laser group and TiO2 particle blasted group. mRNA expressions of RUNX2 and OSX were highest in the femtosecond laser group folowed by TiO2 particle blasted group and pure titanium group in order. These findings indicate that pure titanium treated with femtosecond laser has fine biological property and may be more feasible for human periodontal ligament fibroblasts to attach, grow and proliferate.

Coronary Vessel Anomalies ; Humans ; Myocardial Bridging

No abstract available.
Duodenum* ; Hematoma*

No abstract available.
Duodenum* ; Hematoma*

Hearing Tests ; Humans ; Infant, Newborn ; Neonatal Screening

No abstract available.
Fracture Fixation, Intramedullary

PURPOSE: This study aimed to examine the changes in the outbreak of acute gastroenteritis, rotavirus gastroenteritis after the introduction of the rotavirus vaccine in Korea. METHODS: The current study investigated the number of inpatients in the pediatric ward of Inje University Sanggye Paik Hospital during the periods of 2005-2006 and 2011-2012. A retrospective analysis was conducted on the medical records of 2,840 patients <5 years of age who were hospitalized at Inje University Sanggye Paik Hospital in these time periods. RESULTS: When we compared 2 separate sets of data from before (2005-2006) and after (2011-2012) vaccine introduction, there were statistically significant decreases in the number of patients who were hospitalized for acute gastroenteritis across all of the groups of patients <5 years of age except those <2 months of age. The number of patients with rotavirus gastroenteritis in all age groups declined except for children <2 months of age and those 2-5 months of age. CONCLUSION: These results show that after the introduction of a rotavirus vaccine in Korea, the incidence of rotavirus gastroenteritis decreased in 6-59-month-old patients hospitalized for acute gastroenteritis.
Child* ; Gastroenteritis* ; Humans ; Incidence ; Inpatients ; Korea ; Medical Records ; Retrospective Studies* ; Rotavirus Vaccines* ; Rotavirus* ; Tertiary Care Centers* ; Vaccination

Objective To realize the inter-network connectivity problem through one information-point. Methods According to the characteristics of twisted -pair connections, following the work principles and standards of Ethernet, the transformation of twisted-pair was rebuilt by tri-pass connecting twin-network. Results Each pair of thread groups was taken full advantage by achieving twin-network. Conclusion By comparing the two types of transformation methods, a set of practical solution is explored of handy, mobility, non-destructive and reversible.

Objective To study the influences of dichloromethane extraction from crude and processed Cornus Officinalis on bone marrow cells of aging mice induced by D-galactose. Methods DNA damage of bone marrow cells of aging mice induced by D-galactose was detected by the comet assay, the expression of p53 mRNA was detected by RT-PCR. Results The tail formation rate of model group was significantly higher than the rate of control group (P

OBJECTIVE:To analyze the effects of different disinfectants on results of antibiotics skin test,and to improve the accuracy of the judgment results of antibiotics skin test. METHODS:1 500 patients undergoing antibiotics skin test of penicillin and cephalosporin were randomly divided into group A and group B with 750 patients in each group. Group A was given 75% etha-nol disinfection,and group B was given iodine disinfection. The incidence of false positive results were compared after disinfected with 2 kinds of disinfectants. RESULTS:The incidence of false positive result in group B was lower than in group A,with statisti-cally significant difference (χ2=10.004,P<0.05). CONCLUSIONS:For skin disinfection of antibiotics skin test,iodine is better and safer than 75%ethanol.