What Does the Dentist Do? The dentist is a doctor who is specially trained to care for teeth. When you visit your dentist for a checkup, he or she will look at your teeth and gums to check for any problems. The dentist also wants to make sure your teeth are developing properly as you grow. It's important to visit your dentist every 6 months to make sure you're taking good care of your teeth and that your teeth and gums are healthy. What Happens at the Dentist's Office? After your name is called in the waiting room, you'll go into an exam room and sit down in a big comfortable chair that is like a huge recliner. The chair will have a place to rest your head and lots of room for you to stretch out your legs. Next to the chair may be a little sink with a cup that you can use to rinse out your mouth.