**2.1.3 Subjects and locations**

 The subjects were 6 adults with a mean age of 26 years. They had a complete dentition up to the second molar and no malocclusion.

 Seven different sites in the mouth were chosen for measurements. These were the Lower anterior lingual (LALi) and buccal (LAB), lower posterior buccal (LPB) and lingual (LPLi), upper posterior lingual (UPLi) and buccal (UPB), and upper anterior buccal (UAB). The flow rate of unstimulated whole saliva was measured on each occasion for 5 min by being allowed to drip off the lower lip into a weighed container.
