Turnover intention and related factors among resident physicians in China under the standardised residency training programme: a cross-sectional survey.

Objectives: This study aimed at examining the extent of turnover intention among the Chinese resident physicians who entered the newly established national standardised residency training programme (SRTP), and exploring factors associated with their turnover intention.

Design: Cross-sectional survey.

Setting: Ten institutions from five geographical areas in China.

Effects of several temporomandibular disorders on the stress distributions of temporomandibular joint: a finite element analysis.

The aim of this study was to evaluate stress distributions in the temporomandibular joints (TMJs) with temporomandibular disorders (TMDs) for comparison with healthy TMJs. A model of mandible and normal TMJs was developed according to CT images. The interfaces between the discs and the articular cartilages were treated as contact elements.

Comparative evaluation on three-dimensional finite element models of the temporomandibular joint.

Background: The loads in the temporomandibular joint (TMJ) have been proven to play an important role in its structure and function as well as the etiology and therapy of TMJ disorders. Up to now, finite element (FE) models have been largely used to analyze the stress distributions in TMJs. The disc and the articular surfaces in the TMJs were simulated to be bonded together in many models.

Numerical simulation of tooth movement in a therapy period.

Background: Orthodontic tooth movements are based on the ability of bone reaction to mechanical stimulus with the deposition and resorption of alveolar bone. The numerical simulation of tooth movement could be helpful for the treatment strategy. However, at present, few calculations have been carried out on the tooth movement simulation.

[The 3D finite element analysis of stress distributions in abutment and periodontal tissues with extra-coronal attachment].

A 3D finite element model of bilateral distal-extension edentulous dentition, which includes mandible, incisors, canines and premolars, was established in the first place. Based on it, another model with extra-coronal attachments and dentures was also developed. Moreover, contact elements were applied to the regions between the denture and alveolar bone.

[Three-dimensional finite element stress analysis of mandibular unilateral distal-extension with extra-coronal precision attachment].

From alveolar bone and the complete dentition CT images, a three-dimensionalysis of nonlinear finite element model of mandibular unilateral distal-extension with extracoronal precision attachment was established. The contact elements were used between the denture and alveolar bone. The result shows that, the stress in the second premolar and periodontal tissue decreased obviously as the second abutment was added.

[Three-dimensional finite element stress analysis on the periodontal tissue of maxillary canine].

A three-dimensional finite element model of the maxillary canine was developed including periodontal ligament, pulp and alveolar bone. And the stress distributions in the periodontal tissue were obtained under different orthodontic force. The specific aims were to make the model by means of the more advanced and accurate twin CT, to provide more accurate data for clinical use, and to build a more accurate model for the simulation of maxillary canine movement under orthodontic forces.