Effect of access cavities on the biomechanics of mandibular molars: a finite element analysis.

Introduction: This study aimed to predict the fracture resistance of a mandibular first molar (MFM) with diverse endodontic cavities using finite element analysis (FEA).

Methods: Five experimental finite element models representing a natural tooth (NT) and 4 endodontically treated MFMs were generated. Treated MFM models were with a traditional endodontic cavity (TEC) and minimally invasive endodontic (MIE) cavities, including guided endodontic cavity (GEC), contracted endodontic cavity (CEC) and truss endodontic cavity (TREC).

Endodontic management of a fused left maxillary second molar and two paramolars using cone beam computed tomography: A case report.

Background: Fused teeth usually involve several complications, such as the development of caries in the groove between fused crowns, tooth impaction, diastemas, aesthetic and periodontal problems, and pulpal pathosis, due to the complex anatomical structure of fused teeth. A thorough diagnosis is paramount to forming an accurate treatment plan and obtaining a favourable prognosis. With the advent of cone-beam computed tomography (CBCT), accurate 3-dimensional images of teeth and their surrounding dentoalveolar structures can now be readily obtained, and the technology can accurately provide a minimally invasive approach to acquire detailed diagnostic information.

[Adenovirus mediated expression of recombinant human single chain interleukin-27(rhscIL-27) fusion gene in hepatoma cells].

Aim: To explore the adenovirus mediated expression of recombinant human single chain interleukin-27(rhscIL-27) fusion gene in hepatoma cells.

Methods: The rhscIL-27 fusion gene was subcloned into the shuttle plasmid pAdTrack-CMV and then clone the homologous recombinant adenovirus genomic plasmid pAdEasy in bacteria. The identified recombinant plasmid AdIL-27 was tranfected into 293 cells, and then the adenovirus did the package and amplification.

[The application of radiological imaging in the forensic pathology about cervical part].

Multislice spiral computed tomography (MSCT) and magnetic resonance imaging (MRI) are useful to analyze cervical injury. Especially in injury of skeleton and soft tissue, it has equal value with conventional autopsy. Even they can reparation some shortcoming consisted in the cervical part autopsy.

[Effect of calpain inhibitor I on ikappaBalpha expression and cytokine secretion in RAW264.7 cells attacked with LPS].

Aim: To explore the effect of calpain inhibitor I(CI-I) on ikappaBalpha expression and cytokine secretion in RAW264.7 cells after LPS attack.

Methods: RAW264.