Dental sealants are one of the most-recommended (and most-questioned) treatments in pediatric dentistry. Parents ask: "Are they really necessary? Aren't they expensive? Do they actually prevent cavities?" Here's an honest, no-marketing answer from a pediatric dentist who applies them every week.
What is a dental sealant?
A dental sealant is a thin, tooth-coloured plastic coating painted onto the chewing surface of a back molar. The deep grooves and pits in molars trap food and bacteria where toothbrush bristles can't reach — and that's where 80% of childhood cavities start. The sealant smooths over those grooves and creates a barrier between the tooth and decay-causing bacteria.
How are sealants applied?
- Clean. The tooth is polished and cleaned thoroughly.
- Etch. A mild gel is applied for 15 seconds to roughen the surface so the sealant sticks.
- Rinse and dry. The tooth is rinsed and isolated with a cotton roll.
- Paint. Liquid sealant is brushed into the grooves.
- Cure. A blue light hardens it in 20 seconds.
The whole process takes 5 minutes per tooth. No drilling. No injection. No pain. Most kids barely notice it's happened.
Do sealants actually work?
Yes — and the evidence is strong. The American Academy of Pediatric Dentistry and the CDC both confirm sealants reduce cavity risk on treated molars by ~80% in the first 2 years and ~60% even at 4 years. A 2024 review showed children with sealed molars are three times less likely to need a filling on those teeth than children without.
At what age should sealants be applied?
- Age 6 (first permanent molars). These erupt at the back, behind the baby teeth, and are the most cavity-prone teeth in the mouth. Seal them within 6 months of eruption.
- Age 12 (second permanent molars). Same logic — seal them as soon as they erupt fully.
- Premolars (age 10–12). Optional, depending on how deep the grooves are.
- Baby molars (age 3–5). Only if the child is high-risk for cavities — most kids don't need them on milk teeth.
How much do dental sealants cost in Bharuch?
At Little Angels Kids Dental Care, sealants cost ₹500–900 per tooth. For the standard "first permanent molars" appointment, that's typically 4 teeth = ₹2,000–3,600. Compare that to one filling (₹1,500) plus follow-up costs over the life of a damaged tooth — sealants pay for themselves the first time they prevent a cavity.
How long do sealants last?
Properly applied, sealants last 5–10 years. We check them at every 6-monthly visit and touch up any that have worn down or chipped — usually for a small fee. By the time the sealant naturally wears off, the tooth has matured and is less vulnerable to decay.
Are there any side effects?
Sealants are extremely safe. The most-cited concern is BPA — older sealants contained tiny amounts. Modern sealants we use are BPA-free and have been extensively studied. There's no evidence of any harm. Compared to the real risks of untreated cavities (pain, abscess, RCT, extraction), the safety question is closed.
Sealants vs fluoride — which is better?
They do different jobs and work best together:
- Fluoride strengthens enamel across the whole tooth, including front teeth. Best for smooth-surface protection.
- Sealants physically cover the deep grooves on back teeth where fluoride can't fully protect.
The gold standard for cavity prevention is: pea-sized 1000 ppm fluoride toothpaste twice daily + professional in-clinic fluoride every 6 months + sealants on new permanent molars at 6 and 12.
When sealants are NOT a good idea
- The tooth already has a cavity — that needs a filling, not a sealant
- The chewing surface is naturally shallow with no deep grooves (some kids are lucky)
- The tooth hasn't erupted fully yet — wait until it has
Our honest take
If you can afford one preventive treatment for your child's permanent teeth, make it sealants at age 6. We've seen too many 12-year-olds in our chair with deep cavities in molars that would have been completely protected by a 5-minute, ₹600 sealant six years earlier. It's the single highest-ROI dental decision you can make as a parent.
Book a sealant assessment
If your child's first permanent molars have erupted (usually around their 6th birthday), bring them in for a sealant assessment. We'll check whether they need sealants, apply them in the same visit if appropriate, and have you home in under an hour. Learn more about our sealant service →
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