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 Vanishing capillaries
23.03.2017 | Technische Universität München

nachricht How prenatal maternal infections may affect genetic factors in Autism spectrum disorder
22.03.2017 | University of California - San Diego

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: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

When Air is in Short Supply - Shedding light on plant stress reactions when oxygen runs short

23.03.2017 | Life Sciences

Researchers use light to remotely control curvature of plastics

23.03.2017 | Power and Electrical Engineering

Sea ice extent sinks to record lows at both poles

23.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>