Oral rehabilitation restores form and function and impacts on general health.Teeth provide a discriminating sense of touch and directional specificity for occlusal perception,management of food with mastication and swallowing,and awareness of its texture and hard-ness.Peripheral feedback for control of jaw muscles includes the enamel-dentine-pulp complex and mechanoreceptors in the periodontal tis-sues.The implications of feedback from periodontal and other intra-oral mechanoreceptors as well as changes in central representation are significant for function and adaptation to oral rehabilitation.With implants,in the absence of the periodontium and periodontal mechanore-ceptor feedback,fine motor control of mastication is reduced,but patients are still able to function adequately.Further,there is no signifi-cant difference in function with full-arch fixed prostheses on teeth in comparison with implants.Predictable implant outcomes depend on bone support.Optimum restoration design appears to be significant for bone remodelling and bone strains around implants with occlusal loading. Finite element analysis data confirmed load concentrations at the coronal bone around the upper section of the implant where bone loss is com-monly observed clinically.Load concentration increased with steeper cusp inclination and broader occlusal table and decreased with central fossa loading and narrower occlusal table size.It is recommended that occlusal design should follow a narrow occlusal table,with central fossa loading in intercuspal contact and low cusp inclination to minimise lateral loading in function and parafunction.Acknowledging these features should address potential problems associated with the occlusion in implant therapy.

OBJECTIVE: To explore and summarize the operation method and operation stage for cochlear implant with chronic suppurative otitis media, to provide the clinical reference for cochlear implant with chronic suppurative otitis media. METHOD: The clinical data of 6 cases of cochlear implant with chronic suppurative otitis media from Jun 2006 to Mar 2009 in our hospital was analyzed retrospectively. The operation stage. surgical skill, possible risk and prognosis was analyzed and summarized. RESULT: 3 of 6 cases received single stage subtotal petrosectomy and cochlear implant. 3 of 6 cases received subtotal petrosectomy, they received staged cochlear implant 1 to 6 months later. No complications occurred, all of the cochlear implanted had good open set speech perception. CONCLUSION Staged operation was the first choice for cochlear implant with chronic suppurative otitis media. Single stage operation took potential risks, it should be done cautiously. The key points for the operation was the clearance of the pathological tissue totally, this required good surgical skill and operation instrument.
Adolescent ; Aged ; Chronic Disease ; Cochlear Implantation ; methods ; Female ; Humans ; Male ; Middle Aged ; Otitis Media ; surgery ; Retrospective Studies ; Treatment Outcome

Adult ; Cholesterol, LDL ; blood ; Female ; Humans ; Insulin-Like Growth Factor Binding Protein 1 ; blood ; Male ; Reference Values

Background The diagnosis and treatment of fungal keratitis are knotty.There is no quantitative method to identify the disease and judge the therapeutic effect of the antifungal agent.Studies have determined that serum (1,3-) β-D-glucan level can sensitively and specifically reflect the state of systemic mycotic-causing diseases.However,whether (1,3-) β-D-glucan level in tear can monitor and diagnose mycotic keratitis is unclear.Objective Purpose of this study was to investigate the change of tear (1,3-) β-D-glucan level following the administration of antifungal drug in fungal keratitis patients,and evaluate the diagnosis and monitor value of (1,3-) β-D-glucan in tears for fungal keratitis.Methods Sixty patients who were diagnosed as fungal keratitis by fungal culture were analyzed in Affiliated Hospital of Qingdao University Medical College from July 2010 to May 2012.The patients received the topical administration of antifungal drug for 28 days.Thirty healthy volunteers without eye disease served as normal controls.The tear of 50 μl was collected from each subject for the detection of (1,3)-β-D-glucan before the therapy,7,14,28 days after therapy and 7 days,14 days after the drugs were stopped,respectively.The dynamic changes of (1,3-) β-D-glucan levels in tears were evaluated and compared with the manifestation of the lesions under the laser scanning confocal microscope.The patients without hyphal by the laser scanning confocal microscopy and tear (1,3-)β-D-glucan level less than 20 ng/L were subsequently treated for another 7 days,and the following-up duration was 2 months.The informed consent was obtained before any medical examination was performed from each subject.Results (1,3-)β-D-glucan level in tears (Log value) was (6.37 ±0.48)ng/L in the patient group,and was significantly higher than (2.00±0.31) ng/L in the normal control group (t =2.89,P＜0.01).The lesion was smaller with the gradually clear border,and the number of mycelia was decreased under the laser scanning confocal microscope 7 days after treatment.(1,3-) β-D-glucan level in tears was gradually declined in a time-dependent manner after treatment.The (1,3)-β-D-glucan level in tears (Log) was (5.19 ± 0.42),(4.16 ± 0.33),(2.99 ±0.42),(2.91 ±0.39),(2.80±0.40) ng/L 7,14,28 days after treatment,and 7 days,14 days after the drugs were stopped,respectively,with a statistically significant difference in comparison with (6.37±0.48)ng/L before treatment (P＜0.01).(1,3)-β-D-gluean level in tears remained a lower level till the end of follow-up,and no recurrence of lesion was found in the patient group.Conclusions Detecting (1,3)-β-D-glucan level in tears is of good diagnosis and monitor value in the evaluation of fungal keratitis.

Air Pollutants ; toxicity ; China ; epidemiology ; Hospitals, Public ; Humans ; Patient Admission ; Respiratory Tract Diseases ; etiology ; physiopathology ; Temperature ; Weather

Adult ; Ear Canal ; pathology ; Ear Diseases ; pathology ; Fasciitis ; Humans ; Male

OBJECTIVEInjecting the EPC into the corresponding skin flap to study EPC biological characteristics and its effect on neovascularization in ischemia skin flap.

METHODSCD133 + cells were enriched from human umbilical cord blood by immunomagnetic sorting, and cultured with EGM - 2MV media. After labeled with PKH26 (fluorescent cell linker), the EPC were injected into the over-length flap models made on athymic mice. Observing the EPCs trace and their participating in the flap vascularization using a fluorescent microscope. The potential of EPC neovascularization in ischemic tissue of skin flap was evaluated through measuring the necrotic area and vessel diameter and quantity in the skin flap.

RESULTSThe skin flap necrosis area of EPC group is significantly smaller than that of control (P < 0.05), the dermal and hypodermal blood perfusion of EPC group is significantly more than that of control (P < 0.05). Immunohistological and label fluorescent analyses showed vWF antigen-positive cells and labeled cells constructing blood vessels of flap.

CONCLUSIONSOur data support the EPC may contribute to angiogenesis, speed up ischemic tissue vascularization.

Animals ; Cells, Cultured ; Cord Blood Stem Cell Transplantation ; Female ; Fetal Blood ; Graft Survival ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Stem Cells ; cytology ; Surgical Flaps

Objective To assess the clinical significance of the application of computer assisted navigation technology in excision for sacrum tumor.Methods From December 2007 to June 2009,13 patients with sacrum tumor were treated with computer navigation assisted aggressive curettage.There were 5 males and 8 females.aged 21 to 69 years,with the mean age of 44 years,10 cases were over the level of sacrum3 and 3 cases under the sacrum3.Pathologic diagnosis was chordoma in 7 cases.giant cell tumor in 4 cases and neurofibroma in 2 cases.Five cases were recurrence.The preoperative data of CT and MRI were input into the computer navigation workstation.CT images determined the scope of the invasion of tumor in bone tissue.MRI determined the scope of the invasion of tumor in soft tissue.The CT and MRI image fusion identified the precise boundaries of the tumor in CT images and made markers for navigation guidance in the operative in 10 cases.The Iso-c scan had been made for another 3 cases and fused the Iso-c images with preoperation CT images for improving the images quality.According to preoperative marker in CT images,the aggressive curettage were completed with the real time computer navigation for 7 cases,marginal resection in 4 cases and wide resection in 2.The precise surgical removal of the lesions boundary were verified by computer navigation according to the preoperative planning.Results Thirteen patients were followed up for 7 to 37 months,an average of 18 months,no recurrence cases with marginal resection and wide resection.Two cases with aggressive curettage had recurrence.Conclusion Computer navigation technology helps to precise excision the sacrum tumors,to reduce the recurrence rate.

Objective To investigate residual hearing of children with sensorineural hearing loss in whom wave V was not found in ABR testing and to emphasize the importance of behavioral audiometry in determining the residual hearing.Methods Residual hearing obtained by behavioral audiometry of 101 children with SNHL was studied in relation to the absence of wave V in both click-ABR and tone burst-ABR tests.Results All children have residual hearing of different degrees at different frequencies.There appeared to be a higher percentage of lowfrequency residual hearing than middle and high frequencies.Also,the residual hearing at low frequencies appeared to be better than those in the middle and high frequencies.Average residual hearing thresholds in the right ears from 500 to 4 000 Hz were 106.81±7.13,110.00±7.90,111.78±5.22,112.06±7.08 dB HL and those in the left ears were 98.01±3.98,111.30±7.18,112.06±7.08,108.33±7.23 dB HL.Conclusion The absence of wave V in ABR does not mean total deafness.For those children with no wave V in ABR,behavioral audiometry must be conducted to determine children's behavioral hearing thresholds in order to know their residual hearing.

Objective To evaluate the antitumor effect of SEB-scFv fusion Drotein on gastric cancer. Methods Typical changes of morphologic features and super-microstructure were observed when SEB-scFv fusion protein was used in SGC7901 cens;and the effects of SEB-scFv and its concentration on the cell growth were examined by methyltetrazolium(MTT)assay;DNA ladder and flow cytometry were employed respectively to detect the inhibition phenomenon or apoptosis.We produced a subcutaneous gastric tumor model in baby SD rats by implanting SGC7901 cells.The SEB and SEB-scFv were injeeted to the vena caudalis in the trial groups,and normal saline to the control group.The weight of the tumor and the survival were recorded after treatment. Results Cell inhibitory rate was increased along with increased concentration of SEB-scFv fusion protein.Electron microscopy revealed that the cell presented typical changes of apoptosis.FCM indicated that the apoptotic rate of SGC7901 cell lines significantly increased with increasing dose of SEB-scFv fusion protein,and agarose gel electrophoresis appeared marked DNA ladder.The average weight of tumor in the SEB-scFv group was lower than that in control groups(P＜0.05).The tumor inhibition rate was 61.3%,and the mean survival period of rats in SEB-scFv group was longer than that of other group(P＜0.05)with a survival prolongation rate of 54.6%. Conclusion The resuhs indicate that SEB-scFv fusion protein has an obvious antitumor effect on gastric cancer.