I Went to dentist to get a crown. My inside cheek and tongue got burned by something they used. I went back and the dental assistant said that my tongue was very hard to keep away from what the dentist was doing. My dentist has told me this before. Should there be a way they can prevent burns? Specially because they know that my tongue does this and I don't even realize I am doing this. What can I do to help speed up the healing?