Sealing Out Tooth Decay
Dental sealants offer a simple, painless way to protect your child's teeth from cavities — especially on those hard-to-reach back teeth.
What Are Dental Sealants?
Dental sealants are thin, protective coatings applied to the chewing surfaces of the back teeth (molars and premolars). These teeth have deep grooves and pits that are difficult to clean with a toothbrush, making them especially vulnerable to decay. Sealants fill in these grooves, creating a smooth surface that is much easier to keep clean.
Sealants are one of the most effective preventive measures available in dentistry. According to the Canadian Dental Association, sealants can reduce the risk of cavities in molars by up to 80 percent.
How Are Sealants Applied?
The sealant application process is quick, painless, and requires no drilling or anaesthesia:
- The teeth are thoroughly cleaned and dried
- A mild etching solution is applied to roughen the tooth surface for better bonding
- The teeth are rinsed and dried again
- The sealant material is painted onto the tooth surface
- A special curing light is used to harden the sealant
When Should Sealants Be Applied?
The best time to apply sealants is shortly after the permanent molars erupt, before decay has a chance to begin. The first permanent molars typically come in around age six, and the second set around age twelve. However, sealants can be beneficial at any age if the teeth are cavity-free.
In some cases, sealants may also be recommended for baby teeth with deep grooves, especially if the child is at higher risk for cavities.
How Long Do Sealants Last?
Sealants can protect teeth for up to ten years, though they may need to be reapplied if they become worn or chipped. Your dentist will check the condition of the sealants at each regular checkup and reapply them as needed.
Even with sealants in place, it is important for children to continue brushing twice daily, flossing, and visiting the dentist regularly. Sealants protect the chewing surfaces, but other areas of the teeth still require diligent care.
Frequently Asked Questions
Are dental sealants safe?
Yes, dental sealants are safe and have been used successfully for decades. The materials are BPA-free and biocompatible. The benefits of cavity prevention far outweigh any minimal risk.
Do sealants replace the need for fluoride?
No, sealants and fluoride work in different ways to protect teeth. Sealants protect the chewing surfaces, while fluoride strengthens the enamel on all tooth surfaces. Both are recommended for optimal cavity prevention.
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