“…Saliva plays a major role in the maintenance of oral health, serving many functions that include transmitting the sense of taste, expelling microorganisms, preventing halitosis as well as aiding in the mechanisms of chewing, swallowing, and speaking (Aktaş et al, 2009). The amount of salivary secretions is adversely affected by drugs such as antidiuretics and anticholinergics, and by immunotherapy, some diseases (eg, diabetes), chemotherapy, and radiotherapies applied to the head and neck region.…”