Introduction: Tuberculosis (TB) in internal migrants is one of three threats for TB control in China. To address this threat, a project was launched in eight of the 19 districts of Shanghai in 2007 to provide transportation subsidies and living allowances for all migrant TB cases. This study aims to determine if this project contributed to improved TB control outcomes among migrants in urban Shanghai. Methods: This was a community intervention study. The data were derived from the TB Management Information System in three project districts and three non-project districts in Shanghai between 2006 and 2010. The impact of the project was estimated in a difference-in–difference (DID) analysis framework, and a multivariable binary logistic regression analysis. Results: A total of 1872 pulmonary TB (PTB) cases in internal migrants were included in the study. The treatment success rate (TSR) for migrant smear-positive cases in project districts increased from 59.9% in 2006 to 87.6% in 2010 (P < 0.001). The crude DID improvement of TSR was 18.9%. There was an increased probability of TSR in the project group before and after the project intervention period (coefficient = 1.156, odds ratio = 3.178, 95% confidence interval: 1.305–7.736, P = 0.011). Conclusion: The study showed the project could improve treatment success in migrant PTB cases. This was a short-term programme using special financial subsidies for all migrant PTB cases. It is recommended that project funds be continuously invested by governments with particular focus on the more vulnerable PTB cases among migrants.

Typodont models of bilateral canines gingival displaced vertically for 3 mm and bilateral lateral incisors palatal displaced horizontally for 3 mm are made and every kind of the two kind models was divided into four groups: MDD, MBT, self-ligating and Tip-Edge. Each group of the two kinds of models had 5 models, so a total of 40 models for the two kinds of models were set up. The experimental models were aligned with a 0.30 mm of nickel titanium round wire in a water-bath with constant temperature 45 degrees C for 30 minutes. The three-dimensional digital images of the experimental models before and after the water bath were obtained by scanning with the three dimensional optical scanner ATOS. Geomagic software was used to overlap the digital images taken before and after the water bath treatment. The vertical changes of sign points of canines, the movements of sign points of lateral incisors in the sagittal plane and the horizontal plane were quantified by using the Color map. The data was then processed by a two-factor analysis of variance by using SAS 9.2 software package. Analysis of the results shows that the vertical changes of sign points of canines , the movements of sign points of lateral incisors in the sagittal plane and the horizontal plane of MDD group are all less than those in the other three groups, a statistically significant difference (P < 0.0001). And the size of the teeth displacement is directly related to the size of orthodontic force on the typodont models. Thus the preliminary results suggest that MDD appliance might have advantages of light force in the alignment stage, and that the possible relevant factors are the improvement of its sub-slot and the single ligation wing design.
Cuspid ; Dental Models ; Humans ; Imaging, Three-Dimensional ; methods ; Incisor ; anatomy & histology ; Malocclusion ; therapy ; Orthodontic Appliance Design ; Tooth Movement Techniques ; instrumentation ; methods