D.L.
Hi
I have the same problem with my son. He is now almost 5. But it is still an issue but it is much better. My son also has apraxia and sensory issues. He is very into routine so I found that brushing his teeth every nite while he is in the tub helps. We play a little and do one part at a time. I have just recently started using tootpaste and he is doing better than expected. Good Luck!