Deep grooves are hard to clean
The chewing surfaces of molars are covered in pits and grooves, called fissures. They help grind food, but they are also perfect hiding places for food particles and the bacteria that feed on them. Some grooves are narrower than a single toothbrush bristle, so even careful brushing can miss them.
They are at the back of the mouth
Molars are the hardest teeth to see and reach. Children in particular tend to brush the front teeth they can see in the mirror and skip the back ones. The first permanent molars arrive around age six and the second ones around age twelve, often behind baby teeth, so many kids don’t even know they are there.
Newly erupted teeth are more vulnerable
Enamel on a newly erupted tooth hasn’t fully matured, which makes it more susceptible to the acids bacteria produce. Combine that with deep grooves and frequent snacking, and it’s easy to see why molars are a common first spot for decay.
How to protect your molars
- Brush the back teeth on purpose. Angle the brush to reach the chewing surfaces and the sides of the last molars, twice a day for two minutes.
- Floss daily. Cavities also form between molars, where a toothbrush can’t reach.
- Ask about sealants. A sealant is a thin, protective coating painted onto the chewing surfaces of molars. It fills in the grooves so food and bacteria can’t settle there. Sealants are quick and painless, and they are an easy way to protect children’s teeth from decay.
- Use fluoride toothpaste to help strengthen enamel.
- Limit sugary snacks and drinks between meals, and drink water instead.
- Keep up with checkups. Regular exams catch small spots of decay early, when a simple filling is all that’s needed.
If it has been a while since your family’s last visit, we’d be glad to check those back teeth for you.
Questions about your own teeth? Call Shrewsbury Dental Group at (732) 741-8707 or book a visit online (opens in a new tab). This article is general information and isn't a substitute for an exam.