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Aim The aim for the current research would be to evaluate and compare the microleakage of pit and fissure sealants after making use of five different planning techniques, namely A) standard technique making use of pumice prophylaxis, enameloplasty with round carbide bur, C) enameloplasty with fissurotomy bur, D) air polisher, and E) air abrasion. Materials and practices the research had been conducted on 50 caries-free premolars extracted for orthodontic function. T