Hi, Paul doesn't have a dry mouth or tooth problems yet, but I do. I have Sjogren's Syndrom. Sjogren's is not unusual and many people have it, especially as they age. Among the symptoms is a dry mouth (dry eyes is another). The support group newsletters suggest regular flouride treatment from your dentist. I don't have my newsletters with me (we have stuff in storage), but I think the flouride treatment is recommended several times a year. There are lozenges that moisten the mouth. Our daughter is a dentist and gave me a sample of SALIX SST. It has a nice light flavor and does moisten the mouth and gums. Some dentists are especially good at treating Sjogren's so maybe if one uses that word it will help in finding good treatment. Hope this has helped. Aloha, Jan and Paul