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Contralateral defensive effect versus duplicated attack of harming exercising: A new meta-analysis.
ficantly improve the overall effect, relieve pain and negative emotion, improve quality of life of patients and decrease incidence of complications.PURPOSE： To explore the clinical effect of Actovegin in the treatment of acute oral mucositis in patients with radiotherapy. METHODS： One hundred and thirteen patients with acute oral mucositis caused by radiotherapy for nasopharyngeal carcinoma admitted to the Department of Oncology, the Fifth People's Hospital of Qinghai Province from July 2015 to September 2017 were randomly divided into the experimental group (57 cases) and control group (56 cases). Patients in the experimental group were treated with Aiweizhi, while patients in the control group were treated with new rehabilitation. The changes of VAS score, oral mucositis grade, serum CRP, IL-6, TGF-β1 and TNF-α were compared between the 2 groups. The data were analyzed with SPSS 16.0 software package. RESULTS Before treatment, there was no significant difference in VAS score between the 2 groups (P>0.05). After 1 week and 2 weeks of treatment, the VAS scores of the two groups were significantly lower than those before treatment (P0.05). After 2 weeks of treatment, the level of serum CRP, IL-6, TGF-β1, and TNF-α in both groups was significantly lower than that before treatment (P less then 0.05). The serum level of CRP, IL-6, TGF-β1 and TNF-α in the experimental group was significantly lower than that in the control group (P less then 0.05). AZ 3146 purchase CONCLUSIONS Actovegin has a clear clinical effect on acute oral mucositis in patients with radiotherapy, which can significantly alleviate the pain of patients and reduce the level of serum inflammatory factors.
To investigate the effects of different orthodontic treatments on gingival crevicular fluid chemokine CX3CL1, nuclear factor κB receptor activating factor ligand/osteoprotegerin(RANKL/OPG) levels in patients with malocclusion.

Ninety-six patients with malocclusion who were scheduled to undergo orthodontic treatment were randomly divided into four groups. All patients were treated with square wire appliance, and 0, 50, 150, 250 g of far-distal orthodontic force were given respectively. The levels of CX3CL1 and RANKL/OPG in gingival crevicular fluid were detected in four groups after 1, 2, 3, and 4 weeks of treatment. SPSS 25.0 software package was used for statistical analysis of the date.

The levels of CX3CL1, RANKL and RANKL/OPG in the gingival crevicular fluid of the four groups were continuously increased after treatment for 1-3 weeks, and decreased after 4 weeks of treatment (P<0.05). The OPG in the gingival crevicular fluid was at a low level after 1-3 weeks of treatment. There was an increase after 4 weeks of treatment (P<0.05). The levels of CX3CL1, RANKL, OPG and RANKL/OPG in gingival crevicular fluid increased gradually in group A, B, C and D (P<0.05), and the differences between the groups were statistically significant (P<0.05).

The levels of CX3CL1 and RANKL/OPG in gingival crevicular fluid are closely related to orthodontic force and treatment time, and can be used as an index to evaluate orthodontic treatment of alveolar bone remodeling.
The levels of CX3CL1 and RANKL/OPG in gingival crevicular fluid are closely related to orthodontic force and treatment time, and can be used as an index to evaluate orthodontic treatment of alveolar bone remodeling.
To investigate the effect of early correction with Twin-block appliance on soft and hard tissues of patients with Class Ⅱ skeletal malocclusion.

Sixty patients with Angle Class Ⅱ skeletal malocclusion were prospectively selected. The patients were divided into 2 groups, 30 cases in each group, by random number table method. Patients in the experimental group were treated with a Twin-block appliance combined with straight wire appliance, while patients in the control group were treated with a straight wire appliance. The soft and hard tissue indexes(SNA, SNB, ANB, U1-NA angle, U1-NA distance, L1-NB distance, L1-NB angle, U1-L1) before, and 12 months after treatment were measured. Soft tissue measurement indicators included UL-U1, LL-L1, over jet, overbite, E-upper-lip from the upper lip to the E-line, and the lower lip to the E-line, changes in the vertical distance (E-lower-lip), the dip angle of the sulcus, and the thickness of the soft tissue. SPSS 25.0 software package was used for statistical analysis of the data.

U1-NA, U1-NA, L1-NB, L1-NB, overjet, overbite, E-upper-lip, and E-lower-lip were significantly less than the control group at 12 months and 36 months after treatment in the experimental group(P<0.05). U1-L1, nasolabial angle, sulcus angle, and soft tissue thickness of the experimental group were significantly greater than those of the control group(P<0.05).

Twin-block appliance combined with straight wire appliance can significantly improve the relationship between the jaw and the soft and hard tissues of patients with Class Ⅱ skeletal malocclusion, and the long-term effect is good.
Twin-block appliance combined with straight wire appliance can significantly improve the relationship between the jaw and the soft and hard tissues of patients with Class Ⅱ skeletal malocclusion, and the long-term effect is good.
To investigate the effect of conservative treatment of unilateral condylar fractures on jaw symmetry in children.

Twenty-four children with unilateral condylar fractures were divided into control group and experimental group according to the treatment methods, with 12 cases in each group. The control group received surgery, and the experimental group received conservative treatment with intermaxillary traction combined with occlusal pads. The treatment effects of the two groups were compared, and the imaging improvement, three-dimensional structure of the jaw, mandibular motor and occlusal relationship, and facial nerve injury were compared after treatment. SPSS 17.0 software package was used for statistical analysis.

There was no significant difference in the total effective rate, total effective rate of imaging, disturbance of occlusal relationship, and incidence of facial nerve injury between the two groups (P>0.05). The transverse diameter of the condyles was significantly longer in the experimental group than in the control group, and the width of the condyles and bony condylar deflection in the experimental group were significantly smaller than those in the control group (P<0.
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