Objective:To quantitatively evaluate the change of the long axis angle and the relative displacement of the crown feature points of the posterior teeth under normal bite force utilizing an intraoral scanner, and to provide clinical reference.Methods:From May to December 2019, fifteen graduate volunteers (5 males and 10 females, aged from 22 to 30, with an average age of 25.7 years) from Peking University School and Hospital of Stomatology were recruited to participate in the study. The surface data (U1, L1) of the maxillary and mandibular posterior teeth were scanned by an intraoral scanner i500, and saved as original data. The volunteers were guided to bite in the intercuspal position with normal bite force. The buccal bite data of the posterior teeth were scanned as the basis for registration. The digital casts were imported into Geomagic studio 2013 software and the boundary lines along the gingival margin and mesial and distal contact area of posterior teeth of data (U1, L1) were determined. Long axis of the crown, crown centroid and mesial functional cusp vertex were establishd. The data (U1, L1) were segmented into single tooth. Single tooth was aligned to buccal bite data separately using best-fit alignment command based on the buccal common area of the crown and new casts data (U2, L2) were obtained as the data under bite force. The long axis angle and centroid distance between adjacent teeth (second premolar and first molar, second molar and first molar) were measured and the deviation between data obtained at mouth-open state and that at biting state was calculated. Negative value meant centroid distance became shorter under bite force. The first molar was set as the common area and registrate the U1, L1 to U2, L2. The angle of long axes, and displacement of centroid and of functional cusp vertex between second premolar of two casts were calculated, as well as between second molar of two casts. Wilcoxon signed rank test was used to analyze the differences of teeth displacement between second premolar and second molar, and between maxillary and mandibular jaws with SPSS 26.0 statistical software.Results:The result of second premolar and second molar in the same jaw had no statistical difference ( P>0.05). The centroid distance deviation of mandibular second premolar-first molar [-0.022(0.046) mm] was larger than that of maxilla [-0.006 (0.040) mm] ( P<0.05). The long axis angle of second premolar itself [0.913°(0.647°)] and centroid distance of second molar itself [0.102 (0.106) mm] on the mandibular jaw were different from that on the maxillary jaw, which were 0.590°(0.550°) and 0.074(0.060) mm respectively ( P<0.05). Conclusions:Under bite force, displacement of the second premolar and second molar was present, including the displacement of centroids and deflection of long axes. The mandibular posterior teeth have larger displacement than the maxillary teeth.

Objective Evaluation of the effect of manual reduction with small external fixation on the treatment of elderly Barton fractures.Methods A total of 244 elderly patients with Barton fractures were divided into conservative group (n=126) and operation group (n=118) according to random number table. The conservative group was treated by with manual reduction with small external fixation, and the operation group was treated with open reduction and internal fixation. The complications of the patients, the time of fracture healing, hospitalization time and treatment cost were recorded.The wrist function was evaluated by PRWE wrist score system and Wrightington wrist function score system.The clinical efficacy was evaluated by Gartland-Werley Colles fracture evaluation method.Results The excellent and good effect rate was 91.3% (115/126) in the conservative group and 97.5% (115/118) in the operation group. There was no significant difference between the two groups(χ2=0.857,P=0.354). One year, 6 months, 3 months and 6 weeks after treatment, in the conservative group, the PRWE score (10.4 ± 7.9, 19.1 ± 8.0, 40.5 ± 7.8, 55.7 ± 8.1vs. 80.8 ± 8.2,F=113.665), wrightington score (8.2 ± 3.7, 13.2 ± 4.0, 21.4 ± 3.9, 26.3 ± 4.2vs. 30.1 ± 4.2,F=121.348) were significantly lower than those before treatment (P<0.01). And in the operation group, the PRWE score (10.2 ± 7.8, 15.0 ± 8.0, 26.5 ± 8.0, 44.7 ± 8.2vs. 79.6 ± 8.6,F=81.411), Wrightington score (8.1 ± 3.8, 12.1 ± 4.0, 16.5 ± 4.0, 20.6 ± 4.3vs. 29.8 ± 4.6,F=69.113) were significantly lower than those before treatment (P<0.01). But there was no significant difference in PRWE score and Wrightington scores between the two groups after treatment (t=0.149, 0.104,P=0.881, 0.917, respectively). In the conservative group, the hospitalization time (5.28 ± 2.10 dvs. 12.8 ± 2.21d,t=25.260) was significantly shorter than that of the control group (P<0.01), and the treatment cost (3.26 ± 0.93 thousandvs. 28.66 ± 1.04 thousand,t=200.369) was significantly lower than that in the control group (P<0.01). The overall incidence of complication was 8.7% (11/126) in the conservative group and 17.8% in the surgery group (21/118). There was significant difference between the two groups(χ2=4.396,P=0.036).Conclusions The manual reduction with small splint external fixation was simple, low cost, small trauma, short hospitalization time, and less complications.

Objective:To evaluate the effect of occlusal adjustment on the restoration of the idiopathic cervical lesions.Methods:295 teeth with dental idiopathic cervical lesions in 83 patients were divided into 2 groups,142 teeth with occlusal interference were included in group 1 and the 153 without occlusal interference in group 2.The deffects of all the teeth were filled with Z350 nano-resin and followed up for 2 years.Then the teeth with treatment failure were divided into the experimental group (A,30 from group 1 and 14 from group 2) and the control group(B,30 from group 1 and 15 from group 2).The idiopathic cervical lesions of all teeth were filled with Z350 nano-resin,the occlusion of the corresponding teeth in group A was adjusted at the same time,that of group B was not treated.The cases were followed up for 1 year.Results:The success rate of group 1 and group 2 was 57.75％ and 81.05％ repectively (P ＜ 0.05).A subsequently treatment and 1 year follow-up showed that the success rate of gorup A and B for the cases with treatment failure of group 1 was 83.33％ and 56.67％ (P ＜ 0.05),for group 2 was 85.72％ and 40％ (P ＜ 0.05) respectively.Conclusion:The occlusal adjustment is benefit to the clinical effect of the treatment outcome of idiopathic cervical lesions.

Objective To observe the effect of Chinese herbal fumigation combined with CPM promote the function recovery after Postoperative Patellar Fracture. Methods Eighty patients with patellar fracture were randomly divided into treatment group (40 cases) and control group (40 cases). The control group was treated with CPM. The treatment group was treated with Chinese Herbal Fumigation and CPM. After 8th weeks, the clinical curative effect, knee range of motion and KSS knee score were observed and compared. Results The effect rate of the treatment group was 87.5% (35/40), and the control group was 65.0% (26/40). The difference was statistically significant (χ2=5.591, P<0.01). After treatment, the range of motion of knee joint (138.38°± 7.82°vs. 0.29°± 7.83°, t=10.338), KSS knee function score (88.38 ± 9.52 vs. 3.46 ± 9.36, t=2.330) of the treatment group were higher than those in the control group (P<0.01 or P<0.05). Conclusions The Chinese medicine fumigation combined with CPM functional exercise could accelerate the recovery of knee function and reduce the complications of fracture after patellar fracture.

OBJECTIVE:To compare the efficacy,safety,vascular endothelial growth factor(VEGF)and matrix metallopro-teinase-2 (MMP-2) of docetaxel combined with carboplatin and paclitaxel combined with cisplatin (DDP) in the treatment of ad-vanced ovarian cancer. METHODS:120 patients with advanced ovarian cancer were randomly divided into docetaxel combined with carboplatin group(60 cases)and paclitaxel combined with DDP group(60 cases). Docetaxel combined with carboplatin group received 70 mg/m2 Docetaxel injection,intravenous infusion of 1 h,d1;50 mg/m2 carboplatin injection,intravenous infusion of 1 h,d2. Paclitaxel combined with DDP group received 135 mg/m2 Paclitaxel injection,intravenous infusion of 24 h,d1;30 mg/m2 DDP for injection,intravenous infusion,d3;60 mg/m2 Paclitaxel injection (a maximum of 2.0 m2) by intraperitoneal infusion,d8. 3-week was regarded as 1 treatment course,and it lasted 6 courses. Clinical efficacy,VEGF,MMP-2,progression-free survival, overall survival before and after treatment,mortality rate within 2 years of treatment and the incidence of adverse reactions in 2 groups were compared. RESULTS:There were no significant differences in the objective response rate,disease control rate,mortal-ity rate,incidence of adverse reactions between 2 groups(P>0.05). The progression-free survival in docetaxel combined with car-boplatin group was significantly longer than paclitaxel combined with DDP group,the difference was statistically significant (P<0.05). Before treatment,there were no significant differences in VEGF and MMP-2 level between 2 groups(P>0.05). After treat-ment,VEGF and MMP-2 level in 2 groups were significantly lower than before,and VEGF at different time points and MMP-2 level after 4 weeks,8 weeks and 12 weeks of treatment in docetaxel combined with carboplatin group were lower than paclitaxel combined with DDP group,the differences were statistically significant(P<0.05). CONCLUSIONS:Docetaxel combined with car-boplatin and paclitaxel combined with DDP shows similar efficacy and safety in the treatment of advanced ovarian cancer,but docetaxel carboplatin combined with is superior to paclitaxel combined with DDP in reducing VEGF and MMP-2 and improving pro-gression-free survival.

Objective To compare the clinical effects of needle buried suture and the posterior wall of vagina mucosa excision vaginal tightening surgery for the treatment of mild to moderate vaginal relaxation.Methods A total of 71 patients with mild to moderate vaginal relaxation were randomly divided into observation group (39 cases) and control group (32 cases).The patients in the observation group were given buried lead needle suture,and the control group were treated with posterior wall of vagina mucosa resection.Analysis of two groups was conducted in patients with operation time,intraoperative bleeding,vaginal secretion color,postoperative wound healing and complications;sexual satisfaction was evaluated after 6,12 and 24 months in two groups of patients.Results There was no significant difference between two groups in operation time and vaginal secretion color (P＞ 0.05).Intraoperative blood loss was much more in the observation group than those in the control group,with statistically significant differences between the two groups [(6.23±2.43) ml vs (15.79 ± 7.31) ml,P＜0.05)].The follow-up for a number of months showed that sexual satisfaction had significant difference between the two groups (P＜0.05).None of the patients had rectal or urethral injury,no fistula,incision infection or other complications occurred,and the incision healed in stage Ⅰ.Conclusions For patients with mild to moderate vaginal relaxation,buried lead needle suture vaginal tightening surgery does not damage the vaginal mucosa,no scar,and fewer complications,which is a more simple and effective method to improve the quality of life in patients with vaginal relaxation.

Objective To explore the effect of compound Xueshuantong capsule Dendrobium luminous pill combined with amiotide eye drops in the treatment of vitreous opacity.Methods According to the digital table, 120 patients with vitreous opacity were divided into two groups,60 cases in each group.The control group was given conventional amiotide eye drops treatment,and the observation group was given compound Xueshuantong capsule Den-drobium luminous pill for treatment on the basis of conventional therapy.The clinical effect was observed and com-pared after treatment.Results The total effective rate in the observation group was 66.67%,which was significantly higher than 38.33% of the control group(χ2 =9.09,P <0.05).The total effective rate of young patients in the obser-vation group was 78.79%,which was significantly higher than 51.85% of the elderly patients(χ2 =8.24,P <0.05). The vitreous opacities total effective rate of the observation group after treatment within two years was 58.33%,which was significantly higher than 28.33% of the control group(χ2 =11.67,P <0.05).Conclusion Compound Xue-shuantong capsule Dendrobium luminous pill combined with ammonia iodine peptide drop has a positive effect in the treatment of ocular fluid of vitreous opacity,improve the clinical total effective rate,recovery of affected vision,and avoid the recurrence of vitreous opacity after operation,has the advantages of safety,effectiveness,which should be widely applied in clinic.

OBJECTIVETo explore the effects of group psychological counseling on the self-confidence and social adaptation of burn patients during the course of rehabilitation.

METHODSSixty-four burn patients conforming to the inclusion criteria and hospitalized from January 2012 to January 2014 in Xijing Hospital were divided into trial group and control group according to the method of rehabilitation, with 32 cases in each group. Patients in the two groups were given ordinary rehabilitation training for 8 weeks, and the patients in trial group were given a course of group psychological counseling in addition. The Rosenberg's Self-Esteem Scale was used to evaluate the changes in self-confidence levels, and the number of patients with inferiority complex, normal feeling, self-confidence, and over self-confidence were counted before and after treatment. The Abbreviated Burn-Specific Health Scale was used to evaluate physical function, psychological function, social relationship, health condition, and general condition before and after treatment to evaluate the social adaptation of patients. Data were processed with t test, chi-square test, Mann-Whitney U test, and Wilcoxon test.

RESULTS(1) After treatment, the self-confidence levels of patients in trial group were significantly higher than those in control group (Z = -2.573, P < 0.05). Among trial group, the number of patients with inferiority complex was 17 (53.1%) before treatment, which was decreased to 6 (18.8%) after treatment; the number of patients with normal feeling and that of self-confidence were 8 (25.0%) and 4 (12.5%) before treatment, which were respectively increased to 13 (40.6%) and 10 (31.3%) after treatment. The overall difference in trial group was obvious between before and after treatment (Z = -4.123, P < 0.01) . There was no obvious difference in self-confidence level of patients in control group between before and after treatment (Z = -1.000, P > 0.05). (2) After treatment, the scores of psychological function, social relationship, health condition, and general condition were (87 ± 3), (47.8 ± 3.6), (49 ± 3), and (239 ± 10) points in trial group, which were significantly higher than those in control group [(79 ± 4), (38.3 ± 5.6), (46 ± 4), and (231 ± 9) points, with t values respectively -8.635, -8.125, -3.352, -3.609, P values below 0.01]. After treatment, the scores of physical function, psychological function, social relationship, health condition, and general condition in trial group were significantly higher than those before treatment (with t values from -33.282 to -19.515, P values below 0.05). The scores of physical function, psychological function, health condition, and general condition in control group after treatment were significantly higher than those before treatment (with t values from -27.137 to -17.790, P values below 0.05).

CONCLUSIONSGroup psychological counseling combined with ordinary rehabilitation training give rise to significant effects on self-confidence level and social adaptation for burn patients.

Adaptation, Psychological ; Burns ; psychology ; therapy ; Counseling ; Humans ; Psychotherapy, Group ; methods ; Self Concept ; Social Adjustment ; Treatment Outcome

Objective To explore the application effect of four integrated nursing model in rehabilitation nursing of elderly patients with lung cancer .Methods Eighty-four elderly patients with lung cancer were chosen and were randomly divided into the control group and the intervention group , each with 42 cases.The control group received the routine holistic nursing mode , and the intervention group received the four integrated nursing model on the basis of the control group .The nursing effect was evaluated by the FACT , self-rating depression scale ( SDS ) and self -rating anxiety scale ( SAS ) in two groups .Results No differences were found in the scores of FACT , SDS, SAS between two group before the intervention (P>0.05). The scores of every scales of FACT were respectively (69.99 ±1.45), (69.87 ±2.54), (70.24 ±1.36), (69.25 ±2.02), (68.24 ±1.41) in the intervention group after the intervention , and were higher than those of the control group and those before the intervention (P<0.05).No differences were found in the scores of every scales of FACT in the control group before and after the intervention (P>0.05).The scores of SDS and SAS were respectively (33.893 ±4.257), (29.754 ±3.896) in the intervention group after the intervention , and were lower than (39.450 ±5.058), (34.639 ±5.785) in the control group, and the differences were statistically significant (t=-1.023,1.903, respectively;P<0.05).Conclusions The four integrated nursing model has a positive significance on the improvement of the overall quality of life in patients with lung cancer , and is worthy of the clinical promotion .

Objective To observe the epidemiology characterization of Borna disease virus (BDV) in animal brain in Ili, Xinjiang, and to find out the potential infection of the Borna disease virus to prevent its outbreak. Methods The BDV p24 gene of animal brain tissues in Ili including 200 horses, 75 donkeys and 100 shepherd dogs was detected by fluorescence quantitative nest reverse transcriptase polymer-ase chain reaction(FQ-nRT-PCR). GFP-p24,pMD-19 plasmid contamination was excluded from positive products. Clone sequencing was used to analyze the homology of gene and amino acid sequence. Results BDV p24 gent was found in 3 Ili horses, 4 Ili donkeys and 9 shepherd dogs, and the positive ratio is 1.5%, 5.3% and 9.0%, respectively. The GFP-p24,pMD-19 were not found in BDV p40 gene and plasmid stand-ard. The sequence of BDV p24 amplification production was totally the same as He/80 virus strain. Conclu-sion Natural infection of BDV may exist in the animals(horses, donkeys and dogs)in Ili, and the epidem-ic strain of BDV in this area was homological as He/80 virus strain.