The global increase in dental caries prevalence continues to be a major public health problem which deserves attention worldwide. If remedies to prevent it are not initiated, it may cause a serious negative impact on the future oral health (and systemic health) of the people. Also, it would put strain on the dental profession due to a major increase in the cost of dental services. Various preventive strategies for dental caries have been tried and are still being developed. The occlusal pits and fissures of posterior teeth are highly susceptible to caries because of the anatomy of pit and...