Australasian Dental Practice

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31 Mar 2018 | Australasian Dental Practice

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A perfect fit. Our 3D metal laser printing service and your dental practice

Removable Partial Dentures (RPDs) have been a mainstay of the dental industry for many years and for good reason. They are an affordable and tried-and-tested treatment. Until now, dimensional change during the manufacture of RPDs has been a difficult technical challenge due to the reliance on traditional techniques such as "lost wax". But thanks to some forward thinking by Damian Synefias from Proslab Dental, the challenge has been met and answered.

In an Australian first, a unique 3D laser printer built in the UK by global specialists Renishaw is now up and running at Proslab's high-end Melbourne facility and is ready to provide superior quality and output. Renishaw's additive manufacturing systems use metal powder bed fusion technology to build complex components direct from digital CAD files.

That may sound like a mouthful, but this breakthrough to unquestionable accuracy has important benefits. For dentists, it means that they are now able to enhance their offering in terms of their reputation, service quality and customer service. For patients, an accurate partial denture that fits perfectly first time and is immediately comfortable will definitely put a smile on their face.

As Mr Synefias from Proslab explains, "We've been manufacturing cobalt chrome frames for a long time now and after bringing in the scanning, designing and digital workflow many years ago, the casting process was always our problem area. There was no other accurate technique to finally finish off the process we had in scan and design. With the help of Renishaw and the AM 400 laser printer, we are now in a position to produce the most accurate 'casting' for the patient there is. It allows us to be more confident in our work with no dimensional change in the framework than we are accustomed to from traditional techniques."

3D printing, which is also known as additive manufacturing, is fast becoming a natural progression for those companies who are willing to tackle innovation with an open mind. Proslab has embraced digital technology and is leading the way with a number of new technological rollouts. Proslab has recently introduced a Zirkonzahn milling unit for internal titanium milling and Prettau Zirconia for the highest levels of aesthetics and functionality.

Other recent innovations at Proslab include in-house milling units for IPS e.max, milled occlusal splints and computer designed sleep devices produced using the latest CAD/CAM technology, CAD/CAM surgical guides for implant work and PFM crowns. The digital chain is further enhanced by Proslab.

"We're able to accept all intraoral scan files from clients, which are then printed as 3D models in-house, which benefits accuracy and ensures a better final result for the patient. Call us to enquire about our precision- fitting Digital F/F Dentures," Mr Synefias said.

"Renishaw's laser printing is a pioneering additive manufacturing process capable of producing fully dense metal parts directly from 3D CAD files using a high-powered fibre laser. Parts are built up from a range of fine metal powders that are fully melted in a tightly controlled atmosphere layer by layer in thicknesses ranging from 20 to 100 microns. After closely testing the options in the market, the accuracy that Renishaw is able to deliver has given us a clear edge."

The CE marked metal powder is laid down in 40 micron thick layers and comes direct from Renishaw, so there are no third party suppliers to add cost, complexity or error. Of course, total accuracy means that a better fit in the patient's mouth is assured, along with superior comfort and reliability.

Proslab are renowned for their keen interest in technological solutions and were the first to bring in CAD/CAM processes for metal frames for dentures almost 15 years ago. This addition to their portfolio once again shows that they are willing to lead the way with the type of investment that creates better patient outcomes and pushes the industry forward.

From the perspective of the dental specialists using this service, the benefits of laser printing at Proslab are many. The process is far more efficient and more accurate than traditional methods that were previously responsible for introducing human error into the equation. The digital workflow cycle is now complete and turnaround times are greatly reduced with a five day timeline being the new norm.

"While we started as a traditional lab, we are now one of the leading digital labs servicing dentists in Australia and New Zealand offering a true one-stop service. We do everything in house. Nothing's outsourced. We even have our own drivers", Mr Synefias said. "3D printing is the way of the world now. This is a natural progression for us. The industry is embracing the benefits of digital workflow and I think if you're not on board, you'll really struggle because things are moving so quickly."

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