The best efforts of dentists don’t always mean people will look after their teeth, British researchers have found.
A study by a team at the University of Newcastle upon Tyne discovered that only up to one-third of gum disease patients, who received advice on how long to brush their teeth, followed it to the letter. Yet the same people perceived their brushing habits to be better than they were – a finding which has major implications for dentists wishing to change their patients’ behaviour.
Gum disease can eventually lead to multiple tooth loss, but in many cases damage can be stabilised or reversed if treatment is combined with a good home toothcare regime. For the study, patients were given advice on a regime – which in particular said they should brush their teeth twice a day for two minutes each time. Each of the 17 study participants used an electronic ‘data logger’ powered toothbrush that recorded brushing time. The brush had a light on the handle that flashed when two minutes had elapsed. They were also asked to fill in diaries detailing their brushing habits. The experiment recorded brushing times for two periods of four weeks.
Claire Jordan | alfa
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A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
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The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
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The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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