A series of archaeological teeth, both human and animal, were scanned with a view to establishing a quick and reliable method of recording the extent and severity of dental calculus. The method involved allocating each dentition or tooth a general score, one of five grades: 0 (normal) to 4 (gross). Each tooth was then divided into morphological zones, depending upon species, and the percentage covering of calculus for each zone was recorded. Thickness was also assessed using a five-grade scoring system and was based on radiographs of affected teeth. This gave an idea of the severity of the calculus deposit. -- AATA