Gastro Issues with strange mouthfeel

I had tremendous chronic stress dealing with an aging parent. I began having a mouth sensation similar to burning mouth type which then led me to have a endoscopy which showed all clear except for esophagitis present. Provider immediately prescribed PPIs, which worsened all symptoms gastro wise, finally stopped all of those after 90 days and went to ENT who led me to an alkaline diet which seemed to help. Had another patient endoscopy 1 yr later with a BRAVO monitor which revealed zero GERD incidents and possible low stomach acid. While much has improved, the mouth feel issue still remains often enough 4 days a week, tolerable but aware. I am a dental hygienist so the oral cavity is well known by me. My question is does anyone out there experience this same type of mouthfeel? It has been hard to describe and it occurs within 1.5 hours of a meal, subsides at night. Lots of flossing, brushing and sf-gum to aid in digestion. I had extensive bloodwork panels with all being very good.