I recently had a fissure seal put in by my dentist (Boyd Jamieson) because there were little crevices in my teeth that were likely to get decayed. The fissure seal seals these crevices and ensures that it’s less likely to decay. He cleaned my tooth, and then put some funny tasting gel on my tooth (just don’t put your tongue on it!). They hardened it with some blue light for a few seconds and voila! It wasn’t painful in any way and it was quick and easy! It made me feel happier about my teeth and I wasn’t worried about decay any more!