Abstract
Objective: Analyze and argue the facts regarding xerostomia, based on papers presented during the work. Methods: a literature review was used. Conclusion: Xerostomia as a disease (caused by insufficient production of saliva in the oral mucosa) brings negative consequences to the patient affecting his buccal health. However this consequences are treatable depending on the clinical level. For the diagnosis and used the scintigraphy and Sialometry. The treatment of xerostomia is directly correlated to the cause of this disorder, emphasizing the importance of oral hydration in the saliva replacement extreme cases.