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Scanning systems evaluated in PPR

September 30, 2015

Dr. Hack

Dr. Patzelt
The September issue of ADA Professional Product Review, available online, includes an evaluation of the accuracy of six intraoral scanning systems.
Researchers at the University of Maryland Dental School, in collaboration with the ADA Science Institute, focused on the scanners' ability to accurately scan a single molar abutment tooth in vitro.
"In order to help make a decision on which scanner to purchase, scanning accuracy is an important factor to consider, as it is a component in determining the quality of the final restoration," said evaluation co-researchers Drs. Gary Hack and Sebastian Patzelt in a statement. "Digital dentistry, in terms of optical impression making, is one of the most relevant topics discussed today in dentistry."
The evaluation found that, within the limits of its study, "all of the six investigated scanners produced clinically acceptable results in terms of accuracy. The small observed differences might be related to technological aspects of each device. Further, additional deviations can be expected in the oral environment due to saliva, blood and patient movements."   

The current issue of PPR also includes a new feature called "Clinician's Corner: Diagnostic Challenge," a case study series that begins with a patient new to a practice who requests an emergency bridge repair and a safety checklist for dental equipment.
The ADA Professional Product Review launched in 2006 under the guidance of the ADA Council on Scientific Affairs with the intent of providing ADA members with content compiled from the best available sources. The information aims to be user friendly, unbiased, clinically relevant and scientifically sound.
Members are invited to suggest a product category they'd like to see evaluated in the ADA Professional Product Review. Send suggestions to
For more information or to access the current issue, visit