Background: It has been reported that some factors associated with regular dental attendance. Meanwhile, few reports have discussed a relationship between work environment, lifestyle and oral hygiene behaviour. Aim: To identify factors associated with regular dental attendance among white-collar workers. Method: This cross-sectional internet-based survey was conducted to identify factors associ...

A new type of dental implant was designed as multi-component mainly including inset and abutment between which a gap was introduced to guide the force to transmit from the cancellous bone to cortical bone, with the intention to lower the stress peak at cortical bone. By way of finite element analysis (FEA) associated with advanced computer tomography (CT) and 3D model reconstruction technology ...

Randomly distributed or "fluctuating" dental asymmetry has been accorded evolutionary meaning and interpreted as a result of environmental stress. However, except for congenital malformation syndromes, the determinants of human crown size asymmetry are still equivocal. Both a computer simulated sampling experiment using a combined sample size of N = 3000, and the requirements of adequate statis...

A Valerian is a popular drug among the population. It can be use against anxiety, fear and intension. Our purpose was tu study to what a degree it is included in the practice of the doctors of dental medicine against the stress from the dental treatment. A direct anonymous group inquiry among 296 doctors of dental medicine in the whole country was carried out. From the received information we e...

background: the aim of this study was to compare the skeletal and dental changes of a toothborne (hyrax) and a bone-borne (smile distractor) expansion devices using three-dimensional model of a human skull. materials and methods: a finite element model of human skull was generated using data from 3-d ct scans of an 11-year-old female child. then a hyrax expander (tooth-borne appliance) and smil...

The development of different materials for the use in posterior areas for aesthetic monolitic crowns has been a challenge in dental technology. The goal of this study was to develop 3D posterior teeth covered with complete aesthetic monolitic crowns and to compare the stress distributions under loads, revealing the effect of various materials on the biomechanical performance of the crowns. For ...

The resulting internal stress situation in curing dental composites is still oversimplified due to analytical inaccessibility of local information of state and loading. Similar applies to the strength behavior of cured dental composites. Using recent progress of a finite-element-based curing model, we developed and attempted to benchmark dental composites based on their mechanical behavior and ...

THE primary purpose of the masticatory process is to apply forces to the nutritional substances which are taken into the mouth, thereby causing a reduction in their size. The mechanism for this action includes the medium of tooth structure which not only applies these forces directly to the food masses, but is itself subject to the effects of these forces. In general, the effects of forces appl...