My tongue feels weird like it is scuffed up, and I have a frequent bad taste in my mouth.I have mild gum recession but not gingivitis. I use excellent oral hygiene. Any ideas? My gums are a bit sensitive at the gumline also but I think I need to use the Sonicare less frequently and use a regular brush half the time. I have had yearly sinus infections in the past few years but I am not noting one now. However, my upper sinuses seem slightly tender and I have a sore throat which I think is related to hay-fever. P.S. I am near the end of a process for a dental implant in an upper 2nd molar. I have had no difficulties or issues with the procedure. The implant was placed a couple of months ago and I only have the crown portion left to do. Oddly, chewing any gum seems to help all of the above issues temporarily - maybe it generates more saliva, etc. Finally, I am not on any medication; I take only a multi-vitamin. Thanks!