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Fissure Sealants

Fissure sealants are thin, protective coatings applied to the chewing surfaces of back teeth (molars and premolars). These teeth naturally have deep grooves (fissures) where food and bacteria can easily become trapped.


Sealants work by sealing these grooves, creating a smoother surface that is easier to clean and less likely to develop decay.

The biting surfaces of molars are the most common site for tooth decay in children and teenagers. Even with good brushing, toothbrush bristles often cannot reach deep fissures.

Sealants provide a physical barrier that:

    • Prevents food and plaque from getting trapped
    • Reduces the risk of cavities
    • Supports long-term oral health

According to preventive dentistry principles, sealants are one of the most effective ways to protect high-risk teeth early.


Sealants are most commonly recommended for:

  • Children and teenagers (as soon as adult molars erupt, usually around ages 6 and 12)
  • Patients at higher risk of tooth decay
  • Teeth with deep grooves or early signs of staining
  • Adults who are cavity-prone or have deep fissures

Oral Health Victoria emphasises early prevention—placing sealants soon after teeth erupt provides the greatest benefit.

Applying fissure sealants is quick, painless, and non-invasive. No drilling or injections are required.

Step-by-step process:

          1. The tooth is thoroughly cleaned and dried
          2. A special gel is applied briefly to help the sealant bond
          3. The tooth is rinsed and dried again
          4. The sealant material is painted onto the grooves
          5. A curing light hardens the sealant

The entire process usually takes just a few minutes per tooth.

Fissure sealants protect against tooth decay

    • Painless and non-invasive procedure
    • Cost-effective prevention
    • Especially beneficial for children
    • Long-lasting with minimal maintenance

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