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Dental sealants are thin protective coatings painted onto the chewing surfaces of the back teeth. They seal the deep grooves where food and bacteria collect, helping prevent cavities. Quick and completely painless, with no drilling, sealants are great for children and for cavity-prone adults, and they add an extra layer of protection alongside brushing.
Your back teeth, the molars and premolars, have deep grooves and pits on their chewing surfaces. These spots are perfect hiding places for food and bacteria, and they can be very hard to clean with a toothbrush, which makes them a common place for cavities to form.
A dental sealant is a thin, protective coating we paint onto those chewing surfaces. It flows into the grooves and hardens into a smooth barrier that seals out food and bacteria. The whole process is quick, painless, and needs no drilling or numbing.
Sealants are most often used for children and teens as their permanent molars come in, but adults with healthy, cavity-free back teeth can benefit too. They work alongside good brushing, flossing, and fluoride, not in place of them.
Sealants are a smart, protective step for:
Note: We'll check your teeth (or your child's) and let you know whether sealants would help. We only seal healthy, cavity-free teeth.
The chewing surfaces of the back teeth are especially vulnerable because they:
Have deep grooves that trap food and plaque
Are difficult to clean thoroughly, even with good brushing
Are where many cavities first appear, particularly in children
Do a lot of the heavy work of chewing every day
Our practice is on the 18th floor at 8 S Michigan Ave, steps from Millennium Park and the heart of the Loop, so a quick sealant visit fits easily into a busy family or work schedule.
We welcome the whole family from across downtown Chicago, including the Loop, River North, South Loop, and West Loop, with convenient access by CTA, Metra at Millennium Station, and nearby parking.
Blocks food and bacteria from deep grooves.
Protects the chewing surfaces where decay often starts.
No drilling and no numbing needed.
A simple, cost-effective preventive step.
Ideal as permanent molars come in.
Complements brushing, flossing, and fluoride.
Applying sealants is fast, comfortable, and over in just a few minutes per tooth.
Comfort note: No drilling, no numbing, and our comfort menu is always available to help kids and adults relax.
Sealants are preventive care, and dental insurance commonly covers them for children on permanent molars. Some plans cover them for adults as well. We're in-network with most major PPOs and will review your specific benefits with you.
Members of our in-house membership plan receive 15% off treatments like sealants, and we offer financing through CareCredit and Cherry. We'll always give you a clear estimate up front.
Sealants are safe, well-established, and one of the simplest ways to prevent cavities. A couple of things are worth understanding. A sealant protects the chewing surface of a tooth, not the spaces between teeth, so daily flossing still matters. Sealants also wear over time, so we check them at your regular visits and reapply them if needed.
Sealants are for healthy, cavity-free teeth, and they help prevent decay rather than treat it. If a tooth already has a cavity, it needs a filling instead, and we'll let you know if that's the case. Think of sealants as one helpful layer of protection alongside brushing, flossing, fluoride, and regular cleanings.
We're big believers in preventing problems before they start, and sealants are an easy, effective way to do that, especially for kids. Our gentle, friendly team makes every visit comfortable and takes the time to explain how to keep your family's smiles healthy.
As a proudly woman-owned, all-female practice in the heart of the Loop, led by a woman of color, we pair modern dentistry with genuine, personal, family-friendly care.
Founder & Lead Dentist, Dentistry at Millennium Park.
Last updated: June 2026
Meet Dr. RanganathanThey're thin protective coatings painted onto the chewing surfaces of the back teeth. The sealant flows into the deep grooves and hardens into a smooth barrier that seals out food and bacteria, helping prevent cavities.
They're most beneficial for children and teens as their permanent molars come in, but cavity-free adults with deep grooves in their back teeth can benefit too. We'll let you know if sealants would help you or your child.
Sealants commonly last several years. They can wear over time, so we check them at your regular visits and simply reapply one if needed.
Often, yes, especially for children on permanent molars, and some plans cover adults too. We're in-network with most major PPOs, offer a 15% member discount and financing, and we'll review your benefits with you.
A sealant prevents cavities by protecting a healthy tooth's chewing surface, while a filling treats a cavity that has already formed. Sealants are for healthy teeth; if there's already decay, the tooth needs a filling instead.
At our office on the 18th floor of 8 S Michigan Ave, steps from Millennium Park and the Loop. We welcome the whole family from across downtown Chicago. Call or text (224) 249-5977 or book online.
Sealants are a quick, painless way to help keep cavities away, especially for kids. Call or text us at (224) 249-5977 or book online, and we'll take great care of your family.
We are taking new patients in Chicago! We offer a wide range of dentistry services, including regular dental cleanings and check-ups, fillings and crowns.
