Cone-beam computed tomography (CBCT) has an important function in understanding implant operations. CBCT can be used to evaluate the basic condition of implant site before implant operation and decide whether it is suitable for implanting. CBCT also ensures whether the direction of implant and the operation method are satisfactory. CBCT can be used pre- or post-operation as long as the case involves the maxillary sinus. Clinical implant cases using CBCT were introduced to evaluate the maxillary sinus pre- or post-operation.
Cone-Beam Computed Tomography ; Humans ; Maxillary Sinus ; Postoperative Period

Protein degradation mediated by ubiquitin-proteasome pathway is involved in many biological processes.SCF complex is a sort of important E3 ubiquitin-ligase enzyme.Fbx4 protein is one of F-box protein family members,an important component of substrate-specific ScF Fbx4/αβ-crystallin ligase,and a subunit of SCF complex.Inactivation of Fbx4 protein or alteration of its expression level will influence activity of SCF Fbx4/αβ-crystallin ligase,thus will influence expression level of Cyclin D1.And Fbx4 protein is also an important regulatory factor for telomere maintenance.

OBJECTIVE:To explore the material features and biocompatibility of coronary artery stent and related complications following implantation.METHODS:The databases of CNKI and Medline were searched by the first author using key words of "coronary artery stent,material,biocompatibility and complications" both in English and Chinese.Meta analysis or repetitive studies were excluded,and 16 papers were included in this analysis.RESULTS:Stent materials play an important role in reducing inflammatory reaction and restenosis following stent implantation.As a medical material for humans,the features of stent should be meet the requirements of reliable distensibility,mechanical persistence,good flexibilit and geometrical stability,possible small diameter,excellent blood compatibility,as well as good corrosion resistance.All of these depended on the mechanical and physical features of materials.CONCLUSION:The study of drug-coating stent and drug-eluting stent reduced the restenosis rates following implantation,and the biodegradable stent also attracted more attention.When treating coronary heart disease with cardiovascular stent,the complications should be avoided except consideration of the successful rate of reperfusion.

AIM: To investigate the anti-apoptotic effect of nerve growth factor (NGF) on PC12 cells and to observe the mechanism of signal transduction of JNK pathway. METHODS: PC12 cells were treated with 6-hydroxydopamine (6-OHDA) to induce cell apoptosis. NGF and SP600125, the c-Jun N-terminal kinase inhibitors, were added respectively in order to study the relationship between the activity of c-Jun N-terminal kinase and apoptosis of PC12 cells. The cells were divided into control group, 6- OHDA group, NGF group, 6-OHDA plus NGF group, NGF plus SP600125 group. The apoptotic rates of PC12 cells with different treatments were detected by flow cytometry and activities of JNK in PC12 cells were determined by Western blotting. RESULTS: 6-OHDA increased the apoptotic rate and activity of JNK1 in PC12 cells. Incubation with SP600125 or NGF for 15 min before adding 6-OHDA decreased the apoptotic rate of PC12 cells and activity of JNK1 in PC12 cells.CONCLUSION: Activity of JNK is involved in the pro-apoptotic effect of 6-OHDA on PC12 cells. Anti-apoptotic effect of NGF on PC12 cells affected by 6-OHDA is related to the decrease in the activity of JNK1.

AIM:To establish the quality control standard of Compound Glucomannan Weight-reducing Tablet. METHODS:Material and tablets went through ultrasonic cleaning by 60% alcohol and then hydrolyzed to glucose and mannose with 2.0 mol/L sulfuric acid,derivatized with PMP,separated by RP-HPLC using a stage gradient elution,and wavelength was at 250 nm. The monosaccharide were studied under the help of internal standard; while the glucomannan content in Konjac refined powder and tablets was determined. RESULTS:Linearities of glucose and mannose were good (r=0.994 3,0.999 8) in the range of 0.05-0.5 mmol/L.The average recoveries of this method were 100.67% and 98.34%,RSD were 2.74% and 3.22%(n=5) respectively. Ratio of glucose to mannose in glucomannan was 2 ∶3,glucomannan content in Konjac refined powder was 88.2%,glucomannan content in tablet was 354 mg/p. dissolution used for glucomannan conformed to homogeneity. CONCLUSION:The established quality standard is simple,feasible and reproducible,and can be used for quality control of Compound Glucomannan Weight-reducing Tablet.

Objective To understand the difference of Demodex prevalence among medical students living and studying together with different classes, sexes and nationalities. \ Methods\ Demodex folliculorum and Demodex brevis were detected by using cellophane tape on the nasolabial grooves. \ Results\ The overall prevalence was 51\^5% in 2 248 medical students. Prevalence in different classes and sexes was: freshman 42\^6%, sophomore 49\^6% and third year students 66\^8%; 55\^7% in males and 48\^7% in females. Prevalence in students with different nationalities was: Mongolian 49\^8%, Han 52\^8% and other minorities 64\^3%. \ Conclusion\ The Demodex prevalence in students of senior classes was higher than those from junior ones (P

To explore the time-dependent of p harmacodynamics of lidocain alkalified solution. Method: On 8:00 am and 8:00 pm, surface anaesthesia and subarachnoid anaesthesia were con ducted in rabbits and 76 cases of surgical patients receiving epidureal anaesthe sia were observed in therapy effect.Results: The results of animal experimental showed the anaesthesia potency and anaesthesia incubatory period were better on 8:00 am than 8:00 pm; the clinical observation also obtain ed asimilar result. Conclusion: These results showed that lidocain alkalified solution had time-dependent of pharmacodynamics.

The parallel imaging technology of MRI is the latest technique emerging in the last few years, which is based on the phased array coil. SMASH procedure operates by simultaneously acquiring linear combination signals with different spatial sensitivities from the phased array coils to reduce the phase encoding and shorten the imaging time. SENSE procedure operates by increasing the pace when sampling is performed in k-space, which proves a speedup by reducing the number of encoding steps. When the phased array coil designed, such problems have to be taken into account as resonant frequency, impedance match, mutual impedance and et al.

Food allergy is a common allergic disease.The severity and incidence of food allergy reaction which increases gradually in recent years has seriously affected the healthy growth of infants and toddlers.Although the use of animal models to study the pathogenesis and prevention of food allergy has become the most important and common method because of the restrictions of clinical research,the international standard of food allergy model has not been established yet.Researchers often use milk,egg and peanuts which are very important food sources of infants and toddlers as allergens in animal models on the pathogenesis and control strategies.This article summarizes the research progress of animal models of milk,egg and peanuts,which will be helpful for researchers to choose animal model due to different purpose.

Objective To study the effect of different insulin administration methods on glucose control of gestational diabetes mellitus ( GDM) .Methods Sixty-four cases with GDM were randomly divided into observation group and control group.The observation group received continuous subcutaneous insulin infusion insulin pump therapy, the control group received multiple subcutaneous insulin therapy.Then,the glucose control effect,SAS and SDS score were compared between two groups.Results After 4 weeks,the FBG,HbA1c,2h PG of observation group were significantly lower than the control group[(5.89 ±0.66)mmol/L vs (7.13 ±0.74)mmol/L,(7.14 ±0.82)% vs (8.92 ±0.95)%,(8.87 ±0.92)mmol/L vs (10.13 ±1.32)mmol/L](t=7.074,4.430,8.024,all P<0.05). The glucose fluctuations,insulin amount,hypoglycemia incidence of the observation group were significantly lower than the control group,blood sugar standard time was shorter than the control group[(5.64 ±0.65)mmol/L vs (8.44 ± 0.92)mmol/L,(0.52 ±0.06)U· kg-1· d-1 vs (0.73 ±0.09)U· kg-1· d-1,6.25% vs 28.13%,(4.76 ± 0.55)d vs (7.41 ±0.94)d,t/χ2 =14.061,10.983,5.379,13.764,all P<0.05)];SAS score,SDS score of the observation group were significantly lower than the control group[(34.95 ±4.2) points vs (40.23 ±3.98) points, (35.12 ±3.95)points vs (38.36 ±3.88)points,t=5.162,3.310,all P<0.05)].Conclusion Continuous subcu-taneous insulin infusion insulin pump therapy is helpful to control glucose levels,reduce blood sugar fluctuations and mitigate negative sentiment during treatment,it is an ideal insulin administration method for the treatment of GDM.