A new comparative in vitro study examined the trueness and precision of five intraoral scanners. The study, published in the journal BMC Oral Health, focused specifically on the use of the scanners in implantology, looking at impressions of single and multiple implants.
The study compared the CS 3600 from Carestream Dental, TRIOS 3 from 3Shape, CEREC Omnicam from Dentsply Sirona, DWIO from Dentalwings, and Emerald from Planmeca.
The researchers used plaster models to represent partially edentulous maxilla to be restored with a single crown and a partial prosthesis, and a totally edentulous maxilla to be restored with a full-arch. The models were scanned with a desktop scanner. All scanner datasets were loaded into a reverse-engineering software where they were superimposed on the corresponding reference models to evaluate trueness and superimposed on each other within groups to determine precision. A statistical analysis was then performed.
The results showed significant differences between the five intraoral scanners in both trueness and precision.