ABSTRACT
After the connotation and necessity of social capital participating in health information construction were analyzed, the principal foreign experiences, and domestic status quo and problems of social capital participating in health information construction were described and the following development strategies were put forward for the par-ticipation of social capital in health information construction, namely the key points for the participation of social capital in health information construction, smooth and effective management mechanisms, standard management systems and information security management systems, comprehensive and practical assessment and monitoring sys-tems, encouragement of the participation of social capital in health information construction.
ABSTRACT
After the connotation and necessity of social capital participating in health information construction were analyzed, the principal foreign experiences, and domestic status quo and problems of social capital participating in health information construction were described and the following development strategies were put forward for the par-ticipation of social capital in health information construction, namely the key points for the participation of social capital in health information construction, smooth and effective management mechanisms, standard management systems and information security management systems, comprehensive and practical assessment and monitoring sys-tems, encouragement of the participation of social capital in health information construction.
ABSTRACT
Objective To establish four finite element models for repairing root canals of the maxillary central incisors, study the influences from different post and core materials as well as root canal rehabilitations on stress distributions of the maxillary central incisors, so as to provide theoretical references for clinical application. Methods Four finite element models of repairing system were established by CBCT scanning, Mimics software, Rapidform.xor3, Solidworks and Ansys Workbench software. The occlusal loads were simulated and Von Mises stresses on the roots were calculated. Results Four precise 3D finite element models for repairing maxillary central incisors were established, including dentin, all ceramic crow, coping crown, post and core, gutta percha point, periodontal ligament, glue and alveolar bone. The analysis found out that different post and core materials as well as glues had different influences on Von Mises stress of the dentins as the greater elastic modulus of the post was, the smaller Von Mises stresses of the dentin would be. The Von Mises stress on the post and core made of cobalt-chromium alloy was 23.15 MPa, which was the smallest. Conclusions Stress distributions on repairing systems of the maxillary central incisors with different post and core materials can be predicted by establishing such different finite element models and provides a basis for the clinical application of maxillary central incisors repair systems.