BACKGROUND:Aclassical orthognathic schemefor mandibular prognathism includespreoperative cephalometric analysis,acquiring modulus, facebow transfer, modelsurgery, making occlusion plate.This process is cumbersome,complex,andproneto have bias. Moreover, orthognathic effects are difficult to be predicted, which is a majordifficultyindoctor-patientcommunication.
OBJECTIVE:To summarize and analyze the use of three-dimensional scanning techniques in the treatmentand diagnosisof mandibular prognathism, including principle, application and relative merits, thusprovidingreference forapplying to theclinic.
METHODS:Papers addressing the use of three-dimensional scanning techniques in thediagnosisand treatment of mandibular prognathism were retrieved by computer in Wanfang and PubMed databases with the key words of “three-dimensional scanning, class III,orthognathic, mandibular prognathism” in Chinese and English, respectively. A total of 48papers were included for review.
RESULTS AND CONCLUSION:Compared with the traditional technology,the three-dimensional scanning technology has high accuracy and efficiency in the diagnosis and treatment of mandibular prognathism, and candirectlycapture the 3D geometry of objects for modeling, colection and measurement of biological data, which provides a reliable monitoring method for postoperative assessment andfolow-up. Compared with the CT,thethree-dimensional scanning technology cannot show the internal structure and separate hard and soft tissues, which should be reasonably chosen according to practical data.

Drugs, Chinese Herbal ; therapeutic use ; Dyspepsia ; drug therapy ; Humans ; Medicine, Chinese Traditional

Alloys ; adverse effects ; Cobalt ; adverse effects ; Dust ; Humans ; Occupational Exposure ; adverse effects ; Tungsten ; adverse effects

Objective To discuss the consequences of CT image quality in two different contrast enhancement ways of high pressure syringe. Methods 100 cases by using high-pressure syringes of Lightspeed 16-raw spiral CT and Stellant D-type high-pressure syringe of Medrad, the dose of constrast medium was 4.0 ml/s and the total dose was 80 ml, which was divided into A and B group enhancement scanning. The canalis singularis high pressure syringe was used in 50 cases of A group that no isotonic Na chloride flush, in contrast to 50 samples of B group that were underwent the double isotonic Na chloride flush. The method of evaluation is double-blind observation. Results The number of positive is 40 samples which has radioactive constructed defect in A group. The masculine proportion is 80%. The number of the negative is 10 samples. The proportion is 20%. Correspondingly, the number of radioactive constructed defect in the B group is 24 samples(48%), and the negative number is 26 samples(52%, P

Objective To discuss the comparability of TSH results among different detection systems.Methods 4 different kinds of chemiluminescence immune detection systems (Bayer ACS180, Bayer CENTAUR, VITROS ECI and DPC immulite-1000) were used to detect TSH concentration in 3 kinds of quality control specimens (Bayer,DPC and self-made) and clinical sera. The collected data were dealt with statistical analysis.Results Analysis of variance showed the TSH results from different control and patients sera had significant difference in different detection systems (P

Objective To analyze the impact of obesity on short-term prognosis in patients who underwent surgery for cirrhotic portal hypertension with hypersplenism.Methods The clinical data of 310 patients with cirrhotic portal hypertension who underwent splenectomy and portaazygous devascularization between Apr.2002 and Jue.2012 were prospectively analyzed.According to the body mass index (BMI),these patients were divided into the non-obesity group (BMI ＜ 28 kg/m2) and the obesity group (BMI ≥28 kg/m2).There were 78 patients in the obesity group (male:female 56:22; mean age 48.7 ± 8.3years).There were 232 patients in the non-obesity group (male:female 166:66; mean age 46.3 ± 6.9years).The postoperative outcomes in the two groups were analyzed.Results When compared with the nonobesity group,there were significant differences in age (48.7 ± 8.3 in obesity group vs 46.3 ± 6.9 years in non-obesity group),perioperative blood transfusion (400 ± 100 vs 200 ± 100 ml),intraoperative blood loss (370 ± 110 vs 240 ±60 ml),operation time (180 ±40 vs 150 ±35 min),serum albumin level after surgery (28.1 ±2.6 vs 31.2 ±2.3 g/L),drainage volume (280 ±70 vs 230 ±60 ml) and hospital stays (10.5 ±3.0 vs 8.5 ± 2.5 days) in the obesity group (P ＜ 0.05).However,there were no significant differences in gender,preoperative level of liver function,platelet counts (preoperative and postoperative) and postoperative deaths (P ＞ 0.05).Conclusion BMI was a significant independent prognosis risk factor for patients with cirrhotic portal hypertension undergone splenectomy and portaazygous devascularization.

Objective To investigate the effects of preoperative nutrition support on postopreative clinical outcome in patients with nutritional risk with pancreaticoduodenectomy.Methods Forty six patients with pancreaticoduodenectomy complicated with malnutrition from June 2011 to September 2013 in Department of Hepatobiliary and Lapoaroscopic Surgery of People's Hospital of Wuhan University were randomly divided into experimental group (n =23) and control group (n =23) with random number table,patients in experimental group received preoperative nutrition support,but patients in control group did not receive preoperative nutrition support.The preoperative and postoperative nutritional status,the incidence of postoperative complications,the length of hospital stay,and the cost of hospitalization in the two groups of patients was compared.Results In terms of intra-operative blood loss and the operative time,experimental group was significantly lower than those in control group [(340 ±90)min vs (420 ± 104)min,(761 ± 100)ml vs (901 ± 150)ml,P＜0.01],on the 1st day of preoperation,the 1st day,7th day and 14th day of post operation,the levels of serum albumin was significantly higher than those in control group [(30.6 ± 1.8) g/L vs (24.6±2.2) g/L on the,P＜0.05];and on the 1st day of pre-operation,the 1st day,7th day of post operation,the levels of transferrin were significantly higher in experimental group than in control group [(3.23 ± 0.65) g/L vs (2.38 ± 0.49) g/L on the,P ＜ 0.05);the rate of post operative complication were significantly lower in experimental group than that in control group (52.2％ vs 21.7％,P=0.000);the postoperative anal exhaust time was earlier in experimental group than that in control group [(6.4 ± 0.6) d vs (9.5 ± 0.6) d,P =0.000),and the length of hospital stay was shorter in experimental group [(20.1 ± 6.5) d vs (26.7 ± 9.5) d,P =0.014),and the cost in experimental group was lower [(99 ± 13) thousand yuan vs (115 ± 13) thousand yuan,P =0.000),however,the cost of nutrition support between the two groups was not significantly different (P =0.210).Conclusions Preoperative nutrition support is helpful to reduce the incidence of postoperative complications,shorten the length of hospital stay,to save medical costs for patients with pancreaticoduodenectomy.

Objective To analyze the CT features of hepatic artery and morphology changes of the liver in patients with cavernous transformation of the portal vein (CTPV). Methods Thirteen patients of CTPV without malignant hepatic tumor or other diseases being able to cause changes of hepatic artery such as cirrhosis and hepatophyma were collected. CT data was analyzed, and the arterial and morphology changes of the liver were observed. Results Left and (or) right hepatic arteries were found dilated in 10 patients (76.92%), and unusual flake like enhancement was found in artery phase in 3 patients (23.08%). Atrophy-hypertrophy complex (AHC) could be found only in 1 patient (7.69%). Conclusion Dilatation of hepatic artery manifests more hepatic artery blood supply, while obvious AHC is hardly found in CTPV.

Objective To evaluate the outcomes after implementing gestational diabetes mellitus(GDM) specialist practice model. Methods GDM specialist practice model contained four modules(first visit,follow-up visit,hospital-ization,postpartum),eight aspects of practice contents which included specialist evaluation,diet & exercise survey, diet & exercise prescription,GDM health guidance,weight management during pregnancy. Pregnancy outcomes were compared before and after GDM specialist practice. Results GDM specialist practice model was able to signifi-cantly decrease insulin utilization rate,reduce number of hospitalized patients due to poor blood sugar control,short-en length of hospitalization. Conclusion GDM specialist practice model can effectively save medical costs,and GDM specialist nurses play an important role in management of women with GDM.

Objective To explore feasibility of laparoscopic hepatectomy for hepatic hemangioma.Methods Twelve patients were treated by laparoscopic hepatectomy, including left lateral lobectomy in 5 cases and local liver resection in 7 cases. Three cases of hepatic hemangioma associated with gallbladder stone were performed cholecystectomy synchronously. Results Laparoscopic procedures were successfully performed in all 12 cases. The mean operative time was 155 min. The mean blood loss was 230 mL. The mean postoperative hospital stay was 8 days. The pospostoperative recovery was smooth except that 1 case had pulmonary infection. During a follow-up of 6-20 months for 12 cases,there were no recurrence. Conclusion Laparoscopic hepatectomy for hepatic hemangioma is safe and feasibile with good effect under the condition of strict indication selection and experienced surgeons operating.