A sleever can run into problems too. I just had a dental appt and I was given the 411. Because we are given chewable vitamins, they sit on our teeth for a long time and can cause problems over time. These were the tips I was given. change from the chewables if I can, brush 30mins after taking them. Take your vitamins. Use a good mouth wash. floss. keep an eye for changes in your mouth.