Fig. 1
From: Monitoring of erosive tooth wear: what to use and when to use it
Wear analysis on a lower left second molar using WearCompare. The top image shows two intraoral scans taken three years apart. Deepening of the concavities can be observed by the naked eye. The middle image shows wear analysis of the tooth after a simple registration. Wear facets can be seen in yellow but areas of tissue gain (blue) remain on the surface. This is a flawed registration. The bottom image shows wear analysis after a selective surface registration, aligning only on the lingual and buccal aspects of the tooth. Deepening and widening of the concavities can be seen (red and yellow areas) in addition to wear on the buccal occlusal surface. The areas in blue (tissue gain) are less prevalent on the surface. This demonstrates the importance of an accurate scan and accurate registration
