A painless preventive procedure in which a thin layer of resin is placed in the narrow, deep grooves on the chewing surfaces of newly erupted permanent molars in children, blocking food debris and bacteria from accumulating before decay starts.
Indication
- First permanent molars erupting around age 6 (6-year molars)
- Second permanent molars erupting around age 12
- Premolars and molars with deep, narrow grooves (fissures) on the chewing surface
- Primary molars in children at high caries risk (in selected cases)
- A preventive plan for teeth that have never had decay but carry risk factors
Preparation
- Identification of the appropriate tooth by dental examination (decay must not yet have started)
- A brief, playful explanation of the procedure to the child to reduce anxiety
- Professional cleaning of the tooth surface (removal of plaque and food debris)
- Isolation (saliva ejector, cotton rolls) to keep the tooth surface completely dry
- Taking allergy and prior dental treatment history from the family
How it's performed
- The tooth surface is cleaned and thoroughly dried with an air spray
- An acid gel is briefly applied to the chewing surface to enhance bonding
- The acid is rinsed off and the tooth is dried again
- A flowable protective resin is placed as a thin layer into the fissures
- The resin is cured for a few seconds with a blue light (for light-cured resin)
- The bite is checked, any excess is trimmed if needed, and the procedure is completed
Post-procedure
- The procedure is completed immediately; the child can return to a normal diet the same day
- On the first day, very hard, sticky, or extremely cold/hot foods are best avoided
- Regular dental check-ups (at least every 6 months) monitor the sealant's condition
- A worn or partially detached sealant may be reapplied during the same session if needed
- Daily brushing and use of fluoride toothpaste at home should continue
Risks
- Loss of the sealant over time if adequate isolation cannot be maintained
- Hidden decay developing under the sealant with insufficient cleaning (rare)
- Very rare allergic reaction to the resin
- Mild discomfort if excess material disturbs the bite (corrected at a follow-up visit)
- Early wear or discoloration with improper application
FAQ
Is fissure sealant painful, and is anesthesia needed?
No. The procedure is painless; the tooth is not drilled or cut, so anesthesia is not required. It is one of the most easily tolerated preventive dental procedures for children.
How long does a sealant remain effective?
It typically provides effective protection for 3-7 years and may last longer in some children. If wear or detachment is seen at routine check-ups, it can be reapplied to the same tooth.
My child uses fluoride; is a sealant still necessary?
Yes. Fluoride can protect all surfaces of the tooth, while a fissure sealant adds a mechanical barrier inside the narrow grooves on the chewing surface. The two approaches complement each other and are particularly recommended together for children at caries risk.
What should we do after the procedure?
Normal eating can resume the same day; very hard and sticky foods are reduced for the first day. Daily brushing, fluoride toothpaste, and regular check-ups extend the life of the sealant.
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