Management of Dry Mouth with Saliva Substitute Oral Sprays

Assessment and Classification

The National Comprehensive Cancer Network recommends evaluating baseline salivary gland function by measuring whole salivary flows before starting treatment to determine the appropriate therapeutic approach 3, 4
The severity of dry mouth can be classified into mild (G1), moderate (G2), and severe (G3) based on symptoms and impact on daily life, with mild being dry or thick saliva only with minimal food restrictions, and moderate to severe requiring copious fluids to clear mouth of dry food or inability to eat 1, 5

For mild dry mouth (G1), the American College of Physicians recommends continuing immunotherapy if applicable, implementing dietary modifications to improve hydration and limit caffeine intake, and using topical measures such as water sips and saliva substitute oral sprays 1, 2
For moderate to severe dry mouth (G2/G3), the National Comprehensive Cancer Network recommends holding immunotherapy if applicable, continuing dietary modifications, intensifying topical measures, and considering systemic medications such as prednisone or systemic sialagogues 1, 5, 7

The American Dental Association recommends that saliva substitute sprays should ideally have a neutral pH and contain fluoride and electrolytes to mimic natural saliva 3, 4

The National Comprehensive Cancer Network notes that dry mouth from sicca syndrome may be partially improved with steroids but usually requires chronic care for salivary dysfunction 1, 7
Severe sicca syndrome, if left untreated, can result in dental caries and eventually tooth loss, emphasizing the importance of prompt and effective management 1, 5
For cancer patients receiving immunotherapy who develop dry mouth, the National Comprehensive Cancer Network recommends following specific guidelines for management of immunotherapy-related sicca syndrome 1, 8