Gap-toothed youngsters may not be the only ones who are a little sore when they leave the orthodontists office. While they sport tight braces on their teeth, their doctors may be nursing tight, aching backs, according to a study from the University of Alberta.
A study of graduate orthodontic students at the university and a practising orthodontist--whod been working for 18 years--showed that long hours of bending low and working in patients mouths put heavy strain on the lower back and neck--burdens that translated into weights of up to 138 kilograms in males and 93 kg in females. The total duration of daily work would amount to an hours continuous load on the spine of 450 kg for men and 275 kg for women.
Results of the study appear in the February issue of Clinical Biomechanics. The subjects, aged 27 to 36, (the practicing professional was 48) were videotaped performing their regular duties and the recorded postures were analysed frame by frame for top to bottom compression load, side to side shearing load and exposure time.
Bev Betkowski | EurekAlert!
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
23.05.2017 | Event News
22.05.2017 | Event News
17.05.2017 | Event News
24.05.2017 | Earth Sciences
24.05.2017 | Life Sciences
24.05.2017 | Life Sciences