FREIBURG, Germany: The use of intra-oral scanners for full-arch digitisation of edentulous arches with multiple implants has not been recommended, owing to significant errors. A study by researchers in Freiburg and Berlin in Germany compared the accuracy of intra-oral scans for multiple implants with and without the use of a scan aid. The goal was to understand the potential improvements the scan aid could provide in the context of edentulous arch scans, assessing parameters such as linear deviation, precision and software recognition of scan bodies. The findings highlight the role of scan aids in improving registration of scan bodies and reducing linear deviation in intra-oral scans.