Background and aim: Considering the widespread development of implants in dental treatment plans, linear measurements on panoramic radiography are of especial importance. In the present study we investigated the effect of head misalignment up to 15° around vertical and horizontal axes on the magnification rate of digital panoramic radiography in each part of upper and lower jaws. Materia...

PURPOSE In case of large horizontal discrepancy of alveolar ridge due to severe resorption, cantilevered crown is usually an unavoidable treatment modality. The purpose of this study was to evaluate the clinical criteria for the placement of the aforementioned implant crown. MATERIALS AND METHODS The mandible model with 2 mm thick cortical bone and cancellous bone was fabricated from CT cross...

INTRODUCTION The fracture strength of endodontically treated teeth compared to vital ones has long been a source of controversy. It is not clear how root canal therapy affects the stress distribution in teeth. The purpose of this study was to evaluate the changes in stress distribution after root canal therapy in a human maxillary canine by finite element analysis (FEM). MATERIALS AND METHODS...

assessment of the reservoir structure and determination of theinsitu stress direction arenecessary in oil production optimization andfield development. today, the application of reservoir software and image logsplay a central role in resolving this problem. electricand ultrasonic imaging tools record vast amounts of high-resolution data within the borehole wall. this enables the geoscientists t...

Abstract Taking a 2 MW horizontal axis wind turbine in farm Northwest China as the research object, structural response analysis of considering fluid structure coupling effect under different inflow was carried out by using ANSYS Workbench software. The results show that when incoming speed is cut-in speed, displacement and stress change slightly; between cut-out law same. maximum increase with...

Maintaining the stability of surrounding rock is an important prerequisite in ensuring safe and efficient construction underground mines—in particular, cross-layer roadway, which a combination different media with lithologies. Numerical models were established to investigate effects lateral pressure coefficients (λ), angle (α) between roadway maximum horizontal principal stress, typical litholo...

Geologic gas storage is a sustainable strategy to store energy in underground reservoirs order be used under demand. Injection and withdrawal operations could trigger induced seismicity according the tectonic constrains of reservoir. The study active stress/strain fields shows properties fault patterns that can involved seismicity. In our work, we have determined strain/stress field Yela storag...