These pits and grooves are collectively called dental fissures. They naturally occur on the surfaces of your teeth, especially on the back teeth which are regularly used to chew food. Your molars and premolars are sure to have these fissures. Usually, they are very narrow. As a result, they are very difficult to clean.
Even if you brush your teeth habitually, the bristles of your toothbrush are too thick to be able to penetrate and clean these narrow crevices. Because of this, dental fissures are very vulnerable to tooth decay. In fact, they are a number of times more likely to develop tooth decay than other surfaces.
For this reason, it is important that you protect your teeth using Toorak Dental Fissure Sealants.