A new analysis of published data shows that, although there is considerable variation between products, they do work – at least in the short term. The data also showed that some products can cause mild to moderate tooth sensitivity and cause irritation of the gums.
The Authors of this Cochrane systematic Review note that amidst more than 400 articles that looked at teeth whitening agents, only 25 met their inclusion criteria. All looked at the effect after using the whitener for two weeks, but only 13 studies reported outcome data one week after this two-week application period. Of these, only 6 reported outcome data after one month or longer.
“People should be aware that there is no available long term data on the effect or safety of these products,” says lead author Dr Hana Hasson.
The Review Authors also noted that all of the trials were either sponsored or carried out by the manufacturers of the products.
“There is an urgent need for independent long-term studies evaluating the effectiveness and harms associated with home teeth-whitening products,” says Hasson.
Polly Young | alfa
Study tracks inner workings of the brain with new biosensor
16.08.2018 | Rheinische Friedrich-Wilhelms-Universität Bonn
Foods of the future
15.08.2018 | Georg-August-Universität Göttingen
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
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17.08.2018 | Physics and Astronomy
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17.08.2018 | Life Sciences