Objective To evaluate the marginal microleakage in class Ⅱ-restorations after use of targis inlay. Methods Ten extracted human molar teeth were prepared for MO(mesio-occlusal) and DO(disto-occlsa) cavities. In one type of cavity gingival margin was placed above the cemento-enamel junction (CEJ). In another type gingival margin was placed below the CEJ. Cavities were filled with targis inlays. All teeth were thermocycled 200 times between 0℃ and 56℃. Finally, all teeth were cut in mesial-distal direction with a band saw and the numbers of walls of cavities were determined under scanning electron microscope. Results There was no any microleakage in occlusal margin. The number of inlay microleakage of gingival margin placed below CEJ (30 %) was more than that of gingival margin placed above the CET (10 %) ( P

Objective To explore the clinical characteristics of cerebral infarction accompanied with central serous chorioretinopathy (CSCP).Methods The clinical data of a patient with cerebral infarction and CSCP were reviewed retrospectively.Results The patient was a middle-aged male and mainly presented with dizzy,dystaxia on walking and dysopia.However,he had no history of hypertation,diabetes,hyperlipidemia and related vasculitis.Brain MRI scanning showed infarction in cerebellar hemisphere.Fluorescein eyeground angiography demonstrated the leakage focus on the retina of right eye.All of the presentations were obviously remissive with the treatments of improving micro-vascular circulation and nerve nourishment.Conclusion For those cases of cerebral infarction without related risk factors of cerebral stroke but presenting with dysopia,the possibility of CSCP should be considered.

Audiology ; China ; Congresses as Topic

Audiology ; China ; Congresses as Topic

Objective: To study the color in ShoFu colormeter plate. Methods: The values of color degree of the cervical, body and incisal end of various teeth in the ShoFu colormeter plate were measured by digital camera and analyzed by computer using CIE1976L*a*b* system and JISZ8722 standard. Results: In ShoFu plate the brightness in the cervical, body and incisal end of various teeth changed following a certain rule, the brightness in group R and VR were higher than that in group A. While the values of color degree in other groups changed without any rule. Conclusion: The digital camera and computer may be used in dental color study.

Objective To explore change of peripheral blood CD5+B cells in the systemic lupus ery- thematosus(SLE)patients and the association of this change with the disease activity,Methods The percent- age of CD5~+B ceils in peripheral blood in 57 patients with SLE and 35 healthy controls was determined by flow eytometry.Levels of anti-dsDNA,complement C3 and C4,anti-nuclear antibody(ANA),anticardiolipin anti- body(ACL),were also measured.Results The percentage of CD5~+B cell in SLE patients(2.1?0.4)% was high- er than that in normal controls [(1.5?0.4)%](P＜0.05).In active disease group,the percentage of CD5~+B cells [(2.5?0.5)%] was significantly higher than that in inactive SLE patients [(1.4?0.5)% ](P＜0.01).The percent- age of CD5~+B cell associated with anti-dsDNA,ANA,ALA positively,with C3 negatively and had no associa- tion with C4.Conclusion The percentage of CD5~+B cells in the SLE is significantly high and has correlation and some relationship with the SLE.

Objective To examine the effectiveness of cognitive therapy on orthodontic patients with body image disturbance (BID).Methods 21 orthodontic patients with BID in study group re ceived routine orthopedic treatment and cognitive therapy,and 15 orthodontic patients with BID in control group received only routine orthopedic treatment.All patients were tested with Symptom Checklist 90 (SCL-90),Cognitive Bias Questionnaire (CBQ),Self-Rating Depression Scale (SDS),Self-Rating Anxiety Scale (SAS),and Body Image Questionnaire (BIQ) at prior and post treatment.Results SAS and SDS scores in the study group were decreased after treatment,and SDS decrease in the study group was larger than that in control group.The factor scores of both groups on the SCL- 90were decreased after treatment,and most factor scores decrease in study group was larger than that in control group.Three dimensions (except for function impairment) of the BIQ were improved in the study group as compared with control group.Cognitive styles were improved on the study group as compared with control group.Conclusions The cognitive therapy can improve cognitive bias and mental health of patients with BID.

OBJECTIVE:To study improvement effect of modified mahuang chanyi decoction on allergic rhinitis(AR)model guinea pigs and its mechanism. METHODS:32 guinea pigs were randomly divided into normal group (0.9% Sodium chloride in-jection),model group (0.9% Sodium chloride injection),experimental [Modified mahuang chanyi decoction,5.18 g (medicinal materials)/kg] group and control [Fluticasone propionate nasal spray,50 μg/(guinea pig·d)] group. Except for normal group,other groups received ovalbumin 30 mg and calmogastrin 30 mg intraperitoneally to induce AR model. Except for control group,other groups were given relevant medicine intragastrically,twice a day for consecutive 15 d. Nasal symptoms of guinea pigs were ob-served and recorded,and then analyzed and scored. The protein expression of nasal mucosa SHP-1 was detected by immunohisto-chemistry,the serum contents of IL-4 and IFN-γ were determined by enzyme-linked immunosorbent assay. RESULTS:Compared with normal group,model group suffered from AR symptom,and nasal symptoms score was increased;and the protein expression of nasal mucosa SHP-1 and the serum content of IL-4 increased,while the content of IFN-γ decreased(P<0.05). Compared with model group,AR symptom of experimental group and control group were improved;nasal symptoms score,the protein expression of nasal mucosa SHP-1 and the serum content of IL-4 decreased while the content of IFN-γ increased(P<0.05). CONCLUSIONS:Modified mahuang chanyi decoction shows certain improvement effect on AR,and its mechanism is associated the decrease of IL-4 content and the increase of IFN-γcontent in serum.

Objective To analyze the characteristics of spontaneous otoacoustic emission in full-term newbo‐rns .Methods The Capella OAE equipment (Madsen ,Denmark) was used to test Spontaneous Otoacoustic Emission (SOAE) in 147 cases (236ears) who have passed the newborn hearing screening with TEOAE(Transient Evoked Otoacoustic Emissions) .Results The SOAE incidence was 56 .77% (male 41 .51% ,female 69 .23% ;left ear 49 .14% ,right ear 64 .17% ) .It was significantly higher in females (P<0 .05) and in right ear (P<0 .05) .The av‐erage amplitude was 11 .78 ± 8 .36 dB SPL( 11 .73 ± 8 .25 dB in male ,11 .81 ± 8 .43 dB SPL in female;11 .97 ± 8 .56 dB SPL in the left ear ,11 .65 ± 8 .22 dB SPL in the right ear) .There were significant differences in genders(P<0 .01) .The frequency of SOAE focused on 3 .2~ 3 .7 kHz(2 .9~3 .4 kHz in males ,3 .4~3 .9 kHz in females ;3 .2~3 .7 kHz in the left ears ,3 .2~3 .6 kHz in the right ears) .There were significant differences in genders(P<0 .01) .The average peak of SOAE was 3 .70 ± 2 .75(3 .86 ± 2 .87 in males ,3 .62 ± 2 .70 in females;3 .70 ± 3 .02 in the left ears ,3 .70 ± 2 .55 in the right ears) .There were no significant differences in genders and laterality .Conclusion The characteristics of SOAE in full-term newborns include higher incidences ,multiple peaks and high frequency distribution .

Adult ; Bronchoalveolar Lavage ; methods ; Humans ; Male ; Middle Aged ; Pneumoconiosis ; therapy ; Respiration, Artificial ; methods ; Ventilators, Mechanical