PREVENTING DECAY WITH SEALANTS
Deep pits and grooves can be found on the chewing surfaces of the back teeth. These are termed 'fissures' and are usually too narrow for toothbrush bristles and streams of water to effectively clean. They provide a conducive environment for bacteria to flourish, often resulting in tooth decay.
What can be done?
Fissure sealants can be applied to the teeth. These are special materials used by dentists to seal off pits and fissures. Sealing the tooth surface protects fissures from bacteria and fermentable foods like sugar and starches, and prevents decay from starting deep within.
Any tooth with pits and fissures can be treated, provided the surface to be filled is sound and has not been previously filled. The most commonly treated teeth are the molars and premolars.
How are sealants applied?
Application of sealants is both easy and painless. No drilling is required. The tooth is properly cleaned, treated and dried, before the actual application of the sealant. It then hardens to form a protective coating over the tooth.
How effective are sealants and for how long do they last?
Many studies have shown sealants to be very effective in preventing decay in fissures. They do however require regular maintenance by your dentist. This can be done via your six-monthly dental visit.
Recent research shows that a properly placed sealant will last as long as a typical amalgam filling.
Even if a sealant is damaged or lost, it is easily repaired and replaced. Regular maintenance by your dentist will help them last.
When should sealants be put on the teeth?
Sealants are most effective when applied after the eruption of the tooth. Early application ensures pits and fissures are sealed before the decay process begins.