ADRF funds UQ dentistry research project

Dr Abdalla Ali

Dr Abdalla Ali and his research team at UQ School of Dentistry have received funding from the Australian Dental Research Foundation.

Their project, ‘Soft tissue insertion into micro-tubules on Ti discs using femtosecond laser micromachining subtraction modification’, has been awarded $15,000.

“We are developing a soft tissue insertion into microtubules (less than 10 µm) with nanotopography wall properties which will be made without using any chemical treatments,” Dr Ali said.

“We aim to fabricate microtubules on titanium (Ti) discs as a subtraction surface modification method using advanced micromachining technology to enhance the bio-interface between the soft tissue integration and attachment to titanium dental abutments.

“It is expected that strong adhesion strength between the soft tissue and fabricated micro-tubules with rough surface properties will be achieved for the first time in this project.”

It is envisaged this kind of treatment will prevent bacterial growth and biofilm formation around dental implants once the soft tissue insertion has occurred, and will have the potential to help treat periodontitis.

In Australia, periodontal disease is a prevalent condition with almost 23 per cent of people over the age of 15 affected by moderate or severe periodontal disease. Therefore, soft tissue integration is an essential criterion to gauge restorative success, since osseointegration has become a routine and predictable phenomenon.

“The main complication around dental implants begins with inflammation known as peri-implant mucositis which may progress to a more advanced and insidious stage: peri-implantitis,” Dr Ali said.

“The peri-implantitis is an infectious disease that causes inflammation of the gum and the bone structure around a Ti implant. Chronic inflammation causes bone loss, which leads to a loose Ti implant that can ultimately be fully displaced.

“The risk of inflammation and peri-implantitis is much higher with Ti implants in comparison with natural teeth, as the soft tissue attachments to the implant are more fragile,” Dr Ali continued.

“Micro-tubules with high surface area might be an ideal surface modification method on the dental abutment implants for developing strong soft tissue insertion into the implants and thereby last for a long-term application.

“Our achievement will open a new dental industry trend towards using this technology for next generation implants with multifunctional characteristics.”

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