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 investigate the optimal surgical timing for rib internal fixation.Methods The clinical data of 143 patients with rib fracture were retrospectively analyzed.The patients were divided into early phase fixation group (62 cases) and late phase fixation group (81 cases) according to the time from trauma to internal fixation.The ratio blood lose and body surface area,pulmonary complications and the changes of C reactive protein level before and 5 days after operation were recorded and compared.Results All the patients were healing.The median C reactive protein before operation in late phase fixation group was 45 mg/L,in early phase fixation group was 23 mg/L,there was statistical difference (P ＜ 0.01).The ratio blood lose and body surface area in early phase fixation group was (334.19 ± 37.53) ml/m2,the rate of pulmonary complications was 22.6％(14/61),in late phase fixation group was (438.99 ± 55.24) ml/m2 and 38.3％ (31/81),there were statistical differences (P ＜ 0.01 or ＜ 0.05).The median C reactive protein 5 days after operation in early phase fixation group was 189 mg/L,in late phase fixation group was 258 mg/L,there was statistical difference (P ＜ 0.05).Conclusion Early phase (72 hours) rib internal fixation is expected to reduce patient trauma of systemic reactions,reduce the incidence of bleeding and pulmonary complications.

Observations were made on 27 subjects suffering from burns. Treatment withexercise in water was given to 21 patients with 48--95%, or an average of 68.9%, ofthe body surface burned--37.3% of the affected area to cc 28.6% to deep Ⅱ?, and3% to superficial Ⅱ?. Six patients were in the control group, with 55--81%; or anaverage of 66.9%, of the body surface burned-36.5% of the affected area to Ⅲ?,26.7% to deep Ⅱ?, and 3.1% to superficial Ⅱ?, patients receiving this kind of treat-ment were required to do both active and passive exercises with the whole bodysubmerged in warm water before their wounds were completely healed. Then it wasfollowed by exercises on dry land. The control group did the same amount of exer-cise, but only on dry land. In terms of function recovery, 12 in the group under aquatic exercise treatmentgained "excellent" results and nine "good" results, while three in the controlgroup gained "satisfactory" results and the rest three showed no improvement. The advantages and efficacy of aquatic exercise treatment and precautions inusing this method were also discussed.

Diploid and triploid types of Paragonimus westermani were compared in the aspect of ultrastructure of spermatogenesis. The results showed that the process of spermatoge nesis in the diploid type was normal. The cells at every stage are well developed. A great number of morphologically and functionally normal spermatozoa could be formed. On the other hand, the process of spermatogenesis in the triploid type was abnormal, the cells at every stage developed abnormally. They were apparently degenerated or va-cuolated, lacking organelles. The cytophore was broken into small particles. No normal spermatozoa were found (Figs. 1-5).

Objective To analyse the relationship between vascular dementia in senitity and diffuse white matter lucencice.Methods Observing 54 patients older than 60 of diffuse white matter lucencice for three years with clinical methods CT and/or MRI.Diagnosing vascular dementia by MMSE and Hachinski.Results The degree of diffuse white matter lucencice within the 54 patients were 34 cases as first degree,14 cases as second degree, 6 cases as third degree in the first year, 17 cases, 19 cases and 18 cases in the second year restectively, 8 cases, 17 cases and 29 cases in the third year.The 6 cases of group suffer from the vascular dementia in senitity in the first year,13 cases in the second year,33 cases in the third year.The average annual growth was 32%.Conclusion Diffuse white matter lucencice is a critical factor of vascular dementia in senitity. The positive correlation between the degree of diffuse white matter lucencice and the occurrence of vascular dementia in senitity has been shown( r =0.82, P

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 compare complication,nutritional status and quality of life between total gastrectomy and jejuna interposition after proximal radical gastrectomy in patients with advanced proximal gastric carcinoma.Methods Eighty-five patients with proximal stomach cancer were enrolled from Jan.2002 to Dec.2008,total gastrectomy group(Control group) had 40 cases,jejuna interposition after proximal radical gastrectomy(Experimental group) included 45 cases.Nutritional status,incidence of reflux esophagitis and cholecystolithiasis,5-year survival rate,quality of life were investigated.Results There was no significant difference in 5-year survival rate between two groups(P ＞ 0.05).Incidence of reflux esophagitis in Experimental group was significantly lower than that in Control group(P =0.042).Incidence of cholecystolithiasis in Experimental group was significantly lower than that in Control group (P =0.038).Hemoglobin,albumin,vitamin B12 and ferritin in Experimental group were significantly higher than those in Control group[(142.2 ±8.6) vs (128.4 ±8.4),(41.3 ±5.8) vs (35.9 ±3.8),(271.5 ± 49.7) vs (184.5 ± 24.6),(220.2 ± 59.7) vs (170.2 ± 27.6),P =0.036,0.024,0.032,0.026].Diet and labor in Experimental group were better than those in Control group (P =0.042,0.048).Conclusion Jejuna interposition after proximal radical gastrectomy decrease incidences of reflux esophagitis and cholecystolithiasis,improve nutritional status and quality of life.

As originated from hematopoietic stem cell clonal diseases,bcr-abl-negative chronic myeloproliferative neoplasms (MPN) include polycythemia vera (PV),essential thrombocythemia (ET) and primary myelofibrosis (PMF).With the discovery of JAK2 mutations,many new mutations have been identified.With the in-depth study of gene mutation,the pathogenesis of MPN has been gradually uncovered.Novel drugs have been developed accordingly.

[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.

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.