Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Healing times for dental implants could be cut

15.06.2011
The technology used to replace lost teeth with titanium dental implants could be improved. By studying the surface structure of dental implants not only at micro level but also at nano level, researchers at the University of Gothenburg; Sweden, have come up with a method that could shorten the healing time for patients.

“Increasing the active surface at nano level and changing the conductivity of the implant allows us to affect the body’s own biomechanics and speed up the healing of the implant,” says Johanna Löberg at the University of Gothenburg’s Department of Chemistry. “This would reduce the discomfort for patients and makes for a better quality of life during the healing process.”

Dental implants have been used to replace lost teeth for more than 40 years now. Per-Ingvar Brånemark, who was recently awarded the prestigious European Inventor Award, was the first person to realise that titanium was very body-friendly and could be implanted into bone without being rejected. Titanium is covered with a thin layer of naturally formed oxide and it is this oxide’s properties that determine how well an implant fuses with the bone.

It became clear at an early point that a rough surface was better than a smooth one, and the surface of today’s implants is often characterised by different levels of roughness, from the thread to the superimposed nanostructures. Anchoring the implant in the bone exerts a mechanical influence on the bone tissue known as biomechanical stimulation, and this facilitates the formation of new bone. As the topography (roughness) of the surface is important for the formation of new bone, it is essential to be able to measure and describe the surface appearance in detail. But roughness is not the only property that affects healing.

Johanna Löberg has come up with a method that describes the implant’s topography from micrometre to nanometre scale and allows theoretical estimations of anchoring in the bone by different surface topographies. The method can be used in the development of new dental implants to optimise the properties for increased bone formation and healing. She has also studied the oxide’s conductivity, and the results show that a slightly higher conductivity results in a better cell response and earlier deposition of minerals that are important for bone formation.

The results are in line with animal studies and clinical trials of the commercial implant OsseoSpeed (Astra Tech AB), which show a slightly higher conductivity for the oxide and also an exchange between hydroxide and fluoride on the surface of the oxide. Surfaces with a well-defined nanostructure have a larger active area and respond quickly to the deposition of bone-forming minerals.

The project is a collaboration between the University of Gothenburg and Astra Tech AB in Mölndal, and will be further evaluated in follow-up studies.

The thesis Integrated Biomechanical, Electronic and Topographic Characterization of Titanium Dental Implants was successfully defended at the University of Gothenburg.

For further information, please contact:
Johanna Löberg, Department of Chemistry, University of Gothenburg, tel: +46 (0)31 356 8281, mobile: +46 (0)705 554 787, e-mail: Johanna.Loberg@chem.gu.se / Johanna.Loberg@astratech.com

Helena Aaberg | idw
Further information:
http://hdl.handle.net/2077/25023

More articles from Health and Medicine:

nachricht Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University

nachricht Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>