Outcome measures
xerostomia
HYPOSALIVATION, XEROSTOMIA
The primary objective of this RCT was to evaluate the reduction in patients’ xerostomia symptoms due to RT in contrast to hyposalivation, which can be objectively evaluated using sialometry. The measurement of xerostomia is problematic because it comprises a set of symptoms, and therefore can be assessed only by directly questioning individuals. The following questionnaires were used in this RCT: a modified version of the XQ [