CS 3600 Intraoral Scanner Recognized for Performance in Finish Line Accuracy

 CS 3600 Intraoral Scanner Recognized for Performance in Finish Line Accuracy

The CS 3600 intraoral scanner from Carestream Dental recently outperformed other scanners and traditional impressions in finish line accuracy.

The study, “Finish Line Distinctness and Accuracy in 7 Intraoral Scanners versus Conventional Impression: An In-vitro Descriptive Comparison,” was published in BMC Oral Health, according to a press release.  

The study defines finish line distinctness as “the degree of visual clarity and identifiability in the reproduction of the finish line compared to a reference scan,” and finish line accuracy (FLA) as “the ability of a measurement to match the actual value of a reference scan in the immediate proximity to the finish line.”

In this case, a model with a screw retained crown and a preparation for a cemented crown was scanned with a highly accurate industrial scanner to act as the reference scan.

One traditional impression was taken of the base model while each of the seven scanners captured 10 digital impressions each on the model. The tenth scan from each scanner was used to evaluate finish line distinctness and accuracy.

Based on “color deviation evaluation and distribution of deviations in histogram,” the CS 3600 shared the top rank among the scanners for highest finish line accuracy, with a deviation below ±25 μm. According to the study, the CS 3600 showed a clear and distinct color rendering, which the researchers purposed may “assist in identifying the finish line compared to the monochromatic .STL files.”

While the CS 3600 consistently ranked higher in both finish line accuracy and distinctness than the traditional impression, that was not true for all scanners tested. The study states there are “sizeable variations between intraoral scanners with both higher and lower finish line distinctness and finish line accuracy than impressions” and encourages clinicians to “critically evaluate [a] digital impression, being aware of technical limitations and system specific variations among intraoral scanners.”

View Full Press Release

Source: Carestream Dental

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