@laura1970 As I may have mentioned I went to PubMed and crossed prednisone with dental caries and the only related study was in rats and it did show reduced saliva when rats were given dexamethasone. I went to Drugs.com and searched prednisone side effects. Of the 2000 words written about side effects it did mention "dry mouth" under incidence unknown. It is shocking all the side effects of prednisone including heart attack. I am estimating that there were 100 to 200 side effects mentioned. After being on and off prednisone for 35 years, mostly on, I feel very lucky that the only side effect I had was thin skin.