Teeth have deep grooves on the chewing surface that can trap food and result in cavities. Some of these grooves are so deep that brushing can't keep them clean, resulting in cavities. A simple way to prevent cavities in these vulnerable areas is to place a Sealant. A sealant is a simple and painless way of protecting teeth and does not require shots. A blue gel is used to disinfect the groove and then rinsed off. Then a white gel is placed with a blue flash light to fill in the groove so food and bacteria can't get in and cause trouble. That's it.
Molars first come in at around 5-7 years of age, with a second set coming in between the ages of 11-14. It is best to have a sealant placed when the molars first come in to ensure they are protected early. Sealants last for about 10 years but the benefits last a lifetime.