BACKGROUND: Cone-beam CT (CBCT) and orthopantography are two imaging methods mostly used in the preoperative evaluation of dental implantation. CBCT has high cost and low penetration rate, but orthopantography can result in a larger error in the measurement of bone quantity.OBJECTIVE: To compare the accuracy of bone quantity measurement using CBCT and orthopantography, and to evaluate the clinical effect of simulation in posterior implant region. METHODS: 115 implants from 72 patients undergoing implantation of posterior teeth in the Eye & ENT Hospital of Fudan University were selected. The horizontal heights from the top of the alveolar bone to the important anatomic structures (mandibular nerve or maxillary sinus floor) were measured using CBCT and orthopantography and then analyzed statistically. The implantation simulations were performed using Planmeca Romexis3.8 (for CBCT) and Cliniview9.3 (for orthopantography) to compare the differences in stimulated and postoperative horizontal heights.RESULTS AND CONCLUSION: There were significant differences in the measured data between CBCT and orthopantography (P < 0.05), especially in the maxilla (P < 0.01). There were significant differences between the simulated and postoperative results of the two methods (P < 0.05). The average error and standard deviation in orthopantography were larger than those in CBCT. The average error of implantation simulation using CBCT in the maxilla was smaller than that using orthopantography, whereas the error was similar in mandibular simulations. To conclude, CBCT is more accurate for assessing the quantity of bone in posterior implant region, especially in the maxilla. The accuracy of CBCT and orthopantography in implantation simulation needs to be improved.

Objective To evaluate the effect of endoscopic ultrasonography(EUS)in diagnosing e- sophageal and gastric varices in portal hypertension(PHT)patients.Methods Fifty-three patients with e- sophageal and gastric varices(EV、GV)of decompensation PHT and 20 patients without PHT as control were undergone EUS and esophagogastroduodenoscopy(EGD)simultaneously.EUS detected mainly the EGV,e- sophagus and stomach collateral veins.Results EUS identified EV endoscopically in 29(54.7%)patients. EUS detected GV in 24(45.3%)patients,compared with detection in 18(34.0%)patients by esopha- gogastroduodenoscopy(EGD)(P＜0.001).EUS detected PEV in 27(51%)patients.Distribution rates of PEV in F1,F2 and F3 are 0%,28.6% and 75% respectively.The comparison between groups shows sig- nificant difference(P＜0.001).Splenic vein can be seen in both control and experimental groups with di- ameter 7.5?1.35mm VS 11.5?3.5mm respectively,the difference between two groups is significant(P＜0.001).Proximal diameters of Azygos vein in two groups is 7.36?1.29mm VS 8.77?2.94mm respective- ly.Significant difference can be found(P＜0.05).Conclusion EUS had significant value in the diagnosis of PHT with EV and GV,and especially in detecting abnormalities of extra-luminal veins.

Enteral Nutrition ; Humans ; Infant Nutritional Physiological Phenomena ; Infant, Newborn ; Infant, Premature ; Practice Guidelines as Topic

Congresses as Topic ; Nutritional Sciences

Child ; Humans ; Metabolomics ; Pediatrics ; methods

Objective To compare the clinical application between peripherally inserted central catheterization(PICC) and subclavian central venous catheterization in severely ill patients.Methods A prospective study was carried out in 80 severely ill patients who had been randomly divided into two groups: receiving either PICC(PICC Group,40 patients) or subclavian central venous catheterization(Subclavian Group,40 patients).The success rate,the puncturing time,and the incidence of adverse reactions in the two groups were observed.Results The rate of successful puncture on one session was higher in the PICC Group(92.5%) than in the Subclavian Group(75.0%)(?2=4.501,P=0.034).And as compared with the Subclavian Group,the PICC Group reported a shorter puncturing time(15.7?5.3 min vs 23.9?6.3 min;t=-6.263,P=0.000) and a lower rate of adverse reactions(10.0% vs 27.5%;?2=4.021,P=0.045).Conclusions Use of peripherally inserted central catheterization is simple and safe to perform,superior to subclavian central venous catheterization.

Inflammatory bowel disease (IBD) is a group of intestinal chronic non-specific inflammatory disease with unknown etiology, and includes ulcerative colitis (UC) and Crohn''s disease (CD).Studies have indicated that environmental factor, genetic factor, disorder of immunity are associated with the pathogenesis of IBD.More and more basic and clinical studies focus on treatment with helminths in IBD.The accumulated evidences have shown that helminths infection has beneficial effects on the alleviation of IBD and is relatively safe.This article reviewed the advances in study on helminths in the treatment of IBD.

0.05).The recurrence of pterygium was related to the age.If the age increased five years,the risk of recurrence decreased 18.1%. Conclusion The application of MMC(during) the operation could decrease the recurrence rate of pterygium.The recurrence rate of pterygium was not related to the time of application of 0.02% MMC,and detainment for 3 min was enough during the operation.

Objective To investigate the expressions of glucagon-like peptide-1 receptors (GLP-1R) and cytokeratin17 (CK17) in papillary thyroid cancer tissue and clinicopathological significance.Methods The immunohistochemistry and immunoblotting method were employed to detect the expressions of GLP-1R and CK17 in normal thyroid tissues (control group,50 cases) and papillary thyroid cancer tissue (observation group,80 cases).Then the correlation between the expressions of GLP-1R and CK17 with pathological factors of thyroid cancer was analyzed.Results Low expression of GLP-1R was found in 22 cases (44.00 ％) of the control group,while GLP-1R was expressed in 77 cases(96.25 ％) of the observation group,and the difference between both groups was statistically significant(P＜0.01).The expression of CK17 was positive in 8 cases(16.00％) of the control group,while 77 cases(96.25 ％) in the observation group were CK17 expression positive,and the difference between both groups was statistically significant(P＜0.01).The difference between GLP-1 positive expression and clinicopathologic factors had no statistical significance(P＞0.05).The difference between CK17 expression with sex and age had no statistical significance (P＞0.05),and was obviously related with the tumor diameter,clinical stages and cervical node metastasis of thyroid neoplasms(P＜0.05).Conclusion GLP-1R and CK17 all are highly expressed in papillary thyroid cancer tissue and CK17 expression is obviously related with the tumor diameter,clinical stages and cervical node metastasis of papillary thyroid cancer.

Objective To find the optimal stimulation parameters of electroacupuncture for incision pain and visceral dragging pain after surgery.Method Databases including the China National Knowledge Infrastructure (CNKI), WanFang (WF), VIP and PubMed were retrieved by using computer. The eligible literatures related to the clinical and experimental studies on electroacupuncture for post-operative pain were summarized and the frequencies of the involved electroacupuncture parameters were counted.Result For incision pain, electroacupuncture was used after surgery, with continuous wave, usually a low frequency ranged 2~15 Hz and a current of 2~5 mA; for visceral dragging pain, electroacupuncture was used before surgery, with sparse-intense wave, alternate frequencies majorly at 2/100 Hz and a medium or low current intensity within patient’s endurance. Conclusion In clinical application, the elctroacupuncture parameters should be chosen carefully according to the type of post-operative pain.