Dental Sealants: Do Adults Need Them, How They Work & Are They Worth It?

What Are Dental Sealants?

A dental sealant is a thin, clear resin coating painted into the deep grooves and fissures on the biting surfaces of back teeth. It acts as a physical barrier preventing food and bacteria from settling where a toothbrush cannot reliably reach.

The procedure takes approximately 5 minutes per tooth, requires no drilling and no anaesthetic.

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Are Sealants Only for Children?

No. Adults benefit too — particularly those with deep, stain-prone grooves in back teeth, a history of decay in fissures, dry mouth from medication, or high caries risk.

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Who Gets the Most Benefit?

Good candidates

Less likely to benefit

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Children with newly erupted molars	Teeth with fillings already in the grooves
Adults with deep fissures	Teeth with shallow, easy-to-clean grooves
High-caries-risk patients	Teeth with existing decay needing a filling first

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The Sealant Procedure

1. Clean and dry — the tooth is polished and isolated

2. Etch — a mild conditioning gel prepares the surface

3. Seal — flowable resin is applied and cured with light

4. Bite check — we confirm the sealant does not affect your bite

No numbing, no drilling. Eat and drink normally immediately afterwards.

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How Much Do Sealants Cost?

Our sealants are £65 per tooth. We advise at examination which teeth would benefit — we never recommend treatment that is not clinically justified.

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How Long Do They Last?

A well-placed sealant typically lasts 5–10 years. We check them at every hygiene visit and top up or replace as needed.

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Are They Worth It?

For patients with deep grooves and a history of decay, a £65 sealant may prevent a £185–£260 filling — or a £695+ crown. Prevention is almost always the more comfortable and cost-effective path.

Ask about sealants at your next check-up · Dental sealants pricing