The aim of a fissure sealant procedure is to protect the deep grooves of teeth, known as fissures, from decay by creating a smooth and protective barrier that prevents food particles and bacteria from getting trapped. This treatment is especially beneficial for children and teenagers, whose newly erupted molars are more vulnerable to cavities due to the deep pits and fissures on their chewing surfaces.
According to the NHS, dental decay affects around 1 in 4 children by the age of 5 years old, highlighting the importance of effective preventive measures such as fissure sealants. By acting as a shield against plaque and acids, sealants can dramatically reduce the risk of tooth decay in the most vulnerable areas of the mouth.
What are fissure sealants?
Fissure sealants are thin plastic coatings applied to the chewing surfaces of molars and premolars. These areas often have tiny grooves that can be difficult to clean properly with a toothbrush, even with regular brushing and flossing. The sealant material flows into these grooves and hardens, creating a smooth surface that is easier to clean and less likely to trap bacteria or food debris.
The material used for sealants is usually a clear or slightly tinted resin, similar to that used in tooth-coloured fillings. Once applied, it becomes virtually invisible and does not affect the natural appearance or function of the tooth. The process is entirely painless, requires no drilling, and takes only a few minutes per tooth.

Fissure sealants are thin plastic coatings applied to the chewing surfaces of molars and premolars.
Why is a fissure sealant procedure important?
The main reason fissure sealants are so important is that they directly prevent dental decay before it begins. The deep grooves on molars are a common site for cavities because they trap food and plaque more easily than smoother surfaces. Even with good brushing habits, toothbrush bristles often cannot reach into these narrow grooves effectively.
By sealing these areas, dental professionals provide a long-lasting barrier against decay-causing bacteria and acids. For children and young adults, this early intervention can mean fewer fillings, less discomfort and better long term oral health. For parents, it provides reassurance that their child’s teeth have an additional layer of protection during their most cavity-prone years.
How is a fissure sealant procedure done?
The fissure sealant procedure is quick, straightforward and completely pain-free. It usually takes place during a routine dental visit and does not require any anaesthetic.
First, the dentist cleans the tooth thoroughly to remove plaque and debris from the surface. The tooth is then dried and prepared with a special gel that helps the sealant bond securely to the enamel.
Once the gel is rinsed away and the tooth dried again, the sealant material is carefully applied to the grooves and fissures. A special blue light is then used to harden the resin, creating a tough, protective coating. The dentist will check that the sealant has set correctly and that the bite feels normal.
The entire process typically takes just a few minutes per tooth, and normal eating and drinking can resume immediately afterwards.
Who can benefit from fissure sealants?
Although fissure sealants are most commonly recommended for children and teenagers, adults can also benefit if their molars have deep grooves or a history of decay. The ideal time for application is soon after the permanent molars erupt, usually between the ages of 6 and 14.
Sealants are especially helpful for children who may struggle with effective brushing or have diets higher in sugar. Individuals with orthodontic appliances or a higher risk of decay may also be advised to have fissure sealants applied to provide additional protection.
How long do fissure sealants last?
With proper care, fissure sealants can last for several years. Dentists routinely check them during regular examinations to ensure they remain intact and effective.
If a sealant becomes worn or damaged, it can easily be repaired or replaced. Maintaining good oral hygiene and attending regular dental visits helps prolong their lifespan and effectiveness.
It is important to remember that sealants are not a replacement for brushing, flossing or fluoride use. They work best as part of a comprehensive oral care plan that includes regular dental check-ups and a balanced diet low in sugary foods and drinks.

Having regular dental check-ups is vital in order to maintain good oral health, so that any potential problems can be dealt with sooner rather than later.
Are fissure sealants safe?
Yes, fissure sealants are completely safe and have been used successfully for decades. The materials used are biocompatible and undergo strict safety testing before clinical use.
Some parents may have concerns about chemicals such as Bisphenol A (BPA), but research shows that the amount of BPA exposure from dental sealants is extremely low, far less than that found in everyday items like plastic bottles or food containers.
Dentists take care to apply and cure the sealant correctly, minimising any potential risk and ensuring a safe and effective result.
What are the benefits of having fissure sealants?
Fissure sealants significantly reduce the risk of cavities, save money on future dental treatments and support long term oral health. Children who receive sealants on their permanent molars are far less likely to develop tooth decay compared to those without them.
For families, fissure sealants represent an easy and affordable preventive step that can spare children the discomfort of fillings or extractions later on. For dental professionals, they are a simple yet powerful tool in promoting lifelong oral health and preventing early decay.
Concluding thoughts
The aim of a fissure sealant procedure is to create a protective barrier over the grooves of teeth to prevent decay. This quick, painless and effective treatment is one of the most successful preventive measures in dentistry. By sealing out bacteria and food debris, fissure sealants help to maintain strong and healthy teeth.







