Dental Asia September/October 2021
For more than two decades, Dental Asia is the premium journal in linking dental innovators and manufacturers to its rightful audience. We devote ourselves in showcasing the latest dental technology and share evidence-based clinical philosophies to serve as an educational platform to dental professionals. Our combined portfolio of print and digital media also allows us to reach a wider market and secure our position as the leading dental media in the Asia Pacific region while facilitating global interactions among our readers.
For more than two decades, Dental Asia is the premium journal in linking dental innovators and manufacturers to its rightful audience. We devote ourselves in showcasing the latest dental technology and share evidence-based clinical philosophies to serve as an educational platform to dental professionals. Our combined portfolio of print and digital media also allows us to reach a wider market and secure our position as the leading dental media in the Asia Pacific region while facilitating global interactions among our readers.
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User Report<br />
Nowadays, the challenges on tooth<br />
preparations for prosthetic restoration<br />
are diverse. Combining top-quality<br />
preparations and safety with efficient<br />
operations is among the desired goals.<br />
Excellent ergonomics, good light<br />
conditions in the oral cavity, as well<br />
as simple and intuitive handling are<br />
requirements for dental devices and<br />
instruments.<br />
Good news is, the new W&H Primea<br />
Advanced Air turbine can fulfil all these<br />
expectations. A high-performance<br />
turbine, which has been awarded<br />
the Austrian National State Prize for<br />
innovation, meets different speed<br />
recommendations accurately and<br />
constantly.<br />
All bur manufacturers recommend<br />
predefined speeds for the optimum<br />
performance of their instruments.<br />
<strong>Dental</strong> burs are designed with different<br />
flute angles and cutting characteristics<br />
specific to its task 1 . Rotations per minute<br />
(rpm) varies depending on the outside<br />
diameter of the blade, material to be<br />
cut 2 and vibration characteristics 3 . To<br />
improve blade life, reduce wreckage 2<br />
and heat generation as well as<br />
maximise efficiency 3 and tactile sense 4 ,<br />
it is important to run blades at the<br />
appropriate rpm 2 and follow the bur<br />
manufacturer’s specifications of speed 1 .<br />
By accurately adjusting the Primea in<br />
accordance with these recommended<br />
speeds, the user can get a much better<br />
clinical performance out of the bur.<br />
ACCURACY AND CONSTANCY IN<br />
A SINGLE DEVICE<br />
Dr Grant Dean, dental head and practice<br />
owner of the Central <strong>Dental</strong> Group in<br />
Wodonga, Australia, uses 180,000rpm<br />
to complete the initial shaping of the<br />
restoration, then reduces the speed<br />
to 100,000rpm for more intricate<br />
shaping, and sometimes even as low<br />
as 60,000rpm to get a super-smooth<br />
finish. He completes each step with a<br />
Fig. 1: Optimal speed ranges of the Primea Advanced Air according to the different steps of the treatment and related<br />
intended burs 5<br />
single bur, which is no problem for the<br />
Primea Advanced Air turbine, due to<br />
easy and quick adjustment of the speed<br />
on the display (Fig. 1).<br />
Adjusting the speed in this way ensures<br />
good cutting efficiency, which is<br />
impossible to achieve by using the foot<br />
control to supervise a conventional air-<br />
DENTAL ASIA SEPTEMBER / OCTOBER <strong>2021</strong> 49
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