Welcome! My daughter (6) has said some pretty unusual things, but I have to admit wanting more cavities made me chuckle. My daughter sounds similar to yours--SPD (seeker, dyspraxia) and ADD--also for inattentiveness). She has benefited from OT, although I don't give OT all the credit for her improvement over the past year. My impression about OT is that it helped us discover what works to help her regulate herself at home and school, her balance and body-awareness improved, she experienced major speech improvements because of the Johnson Whistle Hierarchy prescribed by her OT, Therapeutic Listening prescribed by the OT helped somewhat with regulation and improved sensory recognition. It's like the OT facilitates helpful things that we end up carrying out the rest of the week when she's not at OT. Just going to OT an hour a week and not carrying out a sensory diet at home won't be much benefit in my opinion.