During the recent decade, the advanced medical technology has brought the rapid development in the dentoalveolar surgery, and the medical concepts of humanity, painless, minimally invasive, safe and comfortable are gradually accepted by the patients and doctors. Many advanced techniques and equipments have been used in the dentoalveolar surgery. This paper would like to make a review on the clinical application and experience of the advanced medical technologies in the tooth extraction, such as the general anaesthetic technique, the nitrous oxide sedative technique, the computer-controlled local anesthesia delivery devices, the electrocardiogram montior, the location of embedded tooth by cone beam CT and minimally invasive surgical technique. Additionally, in this paper we also described the indication, contraindication, advantages and operating essentials of the orthodontic traction technique, ultrasonic bone surgery (piezosurgery) device and the surgery technology for alveolar bone shape and functional preservation in the extraction of tooth. Finally, we introduced the immediate implantation technique used in the dentoalveolar surgery.
Cone-Beam Computed Tomography ; Humans ; Malocclusion ; Minimally Invasive Surgical Procedures ; Tooth ; Tooth Extraction

[Objective]To probe the research and treatment for Hashimoto thyroiditis in Th1/Th2 migration.[Methods]By referring to related literature from both home and abroad,the author tries to analyze and sort the literature and comes to a reasonable conclusion. [Result]There is a lot of experimental re-search on correction of Hashimoto thyroiditis Th1/Th2 migration at home and abroad,but less clinical treatment research.[Conclusion]Th1/Th2 cellmigra-tion is one of the reasons for Hashimoto thyroiditis.It can promote the development of the disease, have something to do with the rise of thyroid autoanti-bodies.

Pancreaticobiliary maljunction(PBM)is closely related to many surgical diseases in which are commonly seen in clinical practice.However,diagnosis of PBM is difficult and it is easily missed.The lack of knowledge and awareness of PMB has once made PBM “the forgotten corner of abdominal surgery”.This essay summarized the current knowledge on the diagnosis of PBM by medical imaging.

Objective To study the antidepressant effect of Yiyukang and to explore its possible mechanism.Methods By using the mice forced-swimming models,mice tail suspension models and mice stereotyped behavior models,the antidepressant effect of Yiyukang and its mechanism were observed.Result In the mice forced-swimming test,the im- mobility-time was significantly reduced by high and medium dosage Yiyukang with the reduced rate being 21.65% and 24.84%(P＜0.01).The high dosage can also reduce the immobility time of tail-suspension mice with the rate of 29.58%(P＜0.01).Yiyukang can strengthen the mice head shaking behavior and had synergistic action with 5- HTP on reducing stereotyped behavior in mice.Conclusion Yiyukang has certain antidepressant effect,and the mecha- nism may be associated with promoting the actions of 5-hydroxytryptamine and dopamine in mice brain.

As a drug, arsenic trioxide is effectively used for acute promyelocytic leukemia clinically. Inducing tumor cell apoptosis is one of its major mechanism via bcl 2 gone. Therefore, arsenic trioxide is tried in experimental studies on some tumors, such as chronic myelocytic leukemia, lymphoma and gastric carcinoma, even on prevention of restenosis after percutaneous transluminal coronary angioplasty.

Theincreasedmicrovascularpermeabilityappearsmainlyinvenuleduringinflammation , shock ,andburns .Endothelialcellsplayanimportantroleinvenulepermeabilityenhancement.Therearetwo kindsofpathwayformacromoleculeextravasation .Oneisparacellularpathwayandanotheristranscellular pathway ,whicharerelatedtotheformationofendothelialgaportranscellularopeningsseperately .Thealter ationofintercellularrelatedprotein ,suchasoccludin ,claudin ,zonaoccludens (ZO) ,junctionaladhesion molecule (JAM) ,VE -cadherin ,catenin ,integrin ,etc ,andthealterationofendothelialcytoskeleton ,such asrearrangementofactinfilament,formationofstressfiberandfocaladhesion ,etc ,involveinthepathogenesis ofincreasedmicrovascularpermeability . [

Objective To compare expression and distribution of CD68 protein and TRAP positive protein in ankylosing spondylitis (AS), rheumatoid arthritis (RA), osteoarthritis (OA), and normal synovial tissues to study the differentiation of osteoclast in synovial tissues obtained from AS patients and its role in the pathogenesis of bone destruction in AS. Methods Immunohistochemical analysis was performed using CD68 monoclonal antibody to detect CD68 expression, and the distribution of TRAP positive cells in the synovial tissues was examined by enzyme histochemistry in 13 AS, 16 RA, 17 OA patients and 6 healthy controls. The above two variables were quantified in the labeled sections by digital image analysis and semiquantitative analysis to compare the expression of CD68 positive cells in different patient groups and normal subjects. Results Positive CD68 staining was seen in synovial cells from all the patients with AS, RA, OA and normal subjects, and the expression levels of CD68 from patients with AS and RA were higher than those from OA patients and healthy subjects. The CD68 positive cells were abundant mainly in lining layer. In areas where elevated RANKL expression levels were present, the number of TRAP positive cells was found significantly increased in AS and RA synovium. TRAP positive cells were rarely observed in synovium from OA patients and normal controls. There was positive correlation between the number of TRAP positive cells and the RANKL expression (r=0.442, P=0.043) in RA patients. Conclusions An obvious increase in the number of CD68 positive cells and TRAP positive cells in synovium may provide a main source of osteoclastogenesis in AS patients. The up-regulation of activity and quantity of osteoclast may have an important role in peripheral articular destruction in patients with AS.

30 mm Hg) was diagnosed with Doppler echocardiography in 28 patients with SSc.Twenty patients have isolated PHT,while 8 patients were of secondary PHT which was due to severe pulmonary fibrosis.The levels of albumin, ? globulin ,IgA,IgG and CRP in serum of patients with PHT were significantly higher than those without PHT ( P

Objective To investigate the expression of TGF?2 in proximal OFT septum in connexin(Cx) 43 knockout(KO) mice and illustrate its relationship with myocardialization and reveal whether exogenous TGF?2 could promote myocardialization in vitro.Methods Objects were C57/BL6 mice of E12.5 to E15.5 by the mating of 2 month old Cx43 heterozygous mice,which included Cx43 homozygotes(Cx43-/-),heterozygotes(Cx43+/-) and wild-types(Cx43+/+) genotyped by PCR method.?-sarcomeric actin(?-SCA) and TGF?2 were detected by immunohistochemistry.TGF?2 with 3 different dosages was used to be the intervent added to the heart culture system in which the wild-type hearts of E12.5 were cultured till E15.5 before detecting the expression of ?-SCA by immunohistochemistry.Results The expression of ?-SCA in the proximal OFT septum was delayed obviously in Cx43-/-predominantly at E13.5 and E14.5.As compared with the Cx43+/+,the expression of TGF?2 in proximal OFT septum decreased obviously in Cx43-/-mice predominantly at E14.5,and less obviously in(Cx43+/-) mice.None of the intervention groups showed the obvious promoted myocardialization.Conclusions Cx43 KO mice exhibited delayed myocardialization,and the decreased TGF?2 may involve in the abnormal myocardialization of Cx43 KO mice.Application of TGF?2 in vitro could not exactly mimic the in vivo expression pattern of TGF?2,or the process of myocardialization may require precise dosage of TGF?2 and stringency of cultured system.

Objective:To observe the roles of p50 protein in pathologic responses of cerulein(CR)pancreatitis in mice deficient in p50 protein of NF-?B.Methods:Pancreatitis was induced by i.p.injection of 50?g/kg CR.The express and compensation of p65,p50 and cRel proteins of NF-?B,NF-?B activity were measured using electromobility shift assay;parameters of pancreatitis,eg,amylase,lipase and trypsin were evaluated.The apoptosis,necrosis and caspase-3 activity were observed.Results:p50 knockout(KO)mice had no p50 protein expression and increased p65 and cRel proteins expression.p50 KO mice's NF-?B activity decreased and apoptosis increased in pancreatitis compared with wild type(WT)mice.There was no caspase-3 activition in both mice before and after pancreatitis.All KO mice had an increased necrosis and amylase,lipase,trypsin activity compared with WT mice in pancreatitis.Conclusions:The results indicated that NF-?B p50 genetic deletion might attenuate cerulean induced pancreatitis.