Nobel Direct was launched in 2004 by Nobel Biocare AB. The implants were considered a great innovation, as they could be screwed directly into the jawbone without having to first lift up the mucous membrane.
“We have followed up 48 patients who were among the first to get the implant. For each passing year, we have been able to see how the problems related to these implants have grown more and more,” observes Pär-Olov Östman, a dentist who will be presented the study tomorrow at the defence of his dissertation.
After one year, about five per cent of the implants had been lost, and 20 per cent of the remaining implants showed bone loss of more than three millimetres. The new report indicates that after three years, eight per cent of the implants had been lost, and 25 per cent of the remaining implants showed bone loss of more than three millimetres.
“We believe that the problems related to Nobel Direct result both from the design of the implant and an uneven surface against the soft tissue in combination with the method of treatment recommended by the company,” according to Professor Lars Sennerby.
For some time, Nobel Direct was marketed as an implant that was easy to use, and therefore suitable for less experienced dentists. According to the company’s marketing, the implant would also counteract marginal bone loss.
”If the implant is inserted in a more conservative manner, avoiding direct load, the results appear to be better. We believe that there are additional implants with similar design that can also cause problems if they are inserted in the same way as Nobel Direct. However, we are unable to draw any certain conclusions regarding these,” says Professor Tomas Albrektsson, the head of the Department for Biomaterials Science at the Sahlgrenska Academy.
At the request of the Medical Products Agency, Nobel Biocare AB is now working to clarify certain information in the product information material. The company also markets several other titanium implants that have been scientifically proved to be very safe, including a Brånemark implant with the same patented surface as the Nobel Direct implant in dispute.FACTS ON DENTAL IMPLANTAT
Ulrika Lundin | alfa
New discoveries predict ability to forecast dementia from single molecule
12.12.2018 | UT Southwestern Medical Center
Pain: Perception and motor impulses arise in the brain independently of one another
12.12.2018 | Technische Universität München
A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.
The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...
A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.
Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...
Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...
What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.
Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...
Scientists at the University of Stuttgart and the Karlsruhe Institute of Technology (KIT) succeed in important further development on the way to quantum Computers.
Quantum computers one day should be able to solve certain computing problems much faster than a classical computer. One of the most promising approaches is...
12.12.2018 | Event News
10.12.2018 | Event News
06.12.2018 | Event News
12.12.2018 | Health and Medicine
12.12.2018 | Physics and Astronomy
12.12.2018 | Health and Medicine