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DENTAL IMPLANTS PRONE TO FRACTURE

Updated on March 24, 2017
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Retired clinical dental assistant instructor from S.F.V.A.M.C..and wrote articles on preventive dentistry for employee newspaper.

Dental Implants Can Be Fractured While Biting Or Chewing Food

Researchers had studied 100 discarded dental implants and found more than half of them had experienced fractures. Keren Shemtov-Yona, DDS a dental researcher at Technion-Israel Institute of Technology, used a scanning electron microscope to examine 100 implants and found that 60% of them had cracks and other flaws on them.

Today More than three million people in the United States alone have dental implants. Dr. Keren Shemtov-Yona wants to encourage the dental industry to find new and better ways to prevent implants from cracking She said researchers are still studying on ways to be able to decrease "metal fatigue," localized structural damage that occurs from repeatedly applying pressure on the on the implant which causes it to crack during biting and chewing.

Dr. Shemtov-Yona has determined that the "metal fatigue" maybe the cause behind most of the damage to the implants. The implants Dr. Shemtov-Yona had examined were a random combination of titanium alloy and commercially pure titanium. She also found that the commercially pure titanium implants had the most cracks.

Dr. Shemtov-Yona said, since extracting implants and replacing them is complex surgery, She is hoping her research will prompt implant manufacturers to develop a better and more durable implant.


Journal Reference: 1. K. Shemtov-Yona, D Rittel. On the mechanical integrity of retrieved dental implants. Journal of the Mechanical Behavor of Biomedical Materals, 2015; 49:290 DOL. 10.1016/j.jmbbm.205.05.014, The Explorer, the official newsletter of the NADA, September/October 2015 Vol. 41, No. 7





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