Celiac disease (Gluten sensitivity) is one of the more common gastrointestinal disorders in the United States. 90% of cases are estimated to go undiagnosed and it is estimated that 1% of our population suffers from it. I had a patient recently, that I have been on their case about oral hygiene, brushing etc. They started telling me about Celiac disease and how some of their dental problems are due to this disease. I decided to look into it a little further. I did find some interesting things that we as dentists (orthodontist) should be aware. We may be the first to recognize symptoms and guide our patients. One finding is enamel defects. The other is recurrent apthous ulcers. If these are encountered, you should ask your patient about other symptoms which include bloating, diarrhea, fatique, All of us have patients that are constantly getting apthous ulcers- just keep in mind this could be a symptom of celiac disease.