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Stem Cell Therapy - New Hope For Defects And Injuries To Head, Mouth

Posted by James Andrews on Thu, Aug 02, 2012 @ 04:21 AM

stem cell cultureIn the first human study of its kind, researchers found that using stem cells to re-grow craniofacial tissues—mainly bone—proved quicker, more effective and less invasive than traditional bone regeneration treatments.

The clinical trial involved 24 patients who required jawbone reconstruction after tooth removal.

Patients either received experimental tissue repair cells or traditional guided bone regeneration therapy.

"In patients with jawbone deficiencies who also have missing teeth, it is very difficult to replace the missing teeth so that they look and function naturally," said Darnell Kaigler, principal investigator and assistant professor at the U-M School of Dentistry. "This technology and approach could potentially be used to restore areas of bone loss so that missing teeth can be replaced with dental implants."

The treatment is best suited for large defects such as those resulting from trauma, diseases or birth defects, Kaigler said. These defects are very complex because they involve several different tissue types—bone, skin, gum tissue—and are very challenging to treat.

The main advantage to the stem cell therapy is that it uses the patient's own cells to regenerate tissues, rather than introducing man-made, foreign materials, Kaigler said.

The results were promising. At six and 12 weeks following the experimental cell therapy treatment, patients in the study received dental implants. Patients who received tissue repair cells had greater bone density and quicker bone repair than those who received traditional guided bone regeneration therapy.

In addition, the experimental group needed less secondary bone grafting when getting their implants.

The cells used for the therapy were originally extracted from bone marrow taken from the patient's hip, an additional invasive procedure that could be avoided by using the patient's own banked stem cells from dental pulp (a rich source of stem cells). In this case the stem cells were placed in different areas of the mouth and jaw.

Stem cell therapies are still probably 5-10 years away from being used regularly to treat oral and facial injuries and defects, Kaigler said. The next step is to perform more clinical trials that involve larger craniofacial defects in a larger number of patients.

Tags: Dental Stem Cells, Research, Healthcare, Regenerative Medicine

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