EVALUATION of PREVENTIVE EFFECT of SEALANTS and LASER THERAPY on DENTAL CARIES and POSTERUPTIVE BREAKDOWN on MOLARS AFFECTED with MOLAR INCISOR HYPOMINERALISATION (RANDOMIZED CLINICAL TRIAL)

This group will be subjected to laser therapy. Er,Cr:YSGG will be used (Waterlase®, Biolase, USA) of a wavelength of 2780 nm at a power of 0.75 W using a frequency of 20 Hz and pulse duration of 140 µs. (33) Irradiation will be performed on the entire occlusal and at the hypomineralized areas. (34) The laser tip will pass in a uniform scanning motion steadily for 20 sec with relative isolation with 11% air and no water-cooling system. During the laser treatment, all safety measures will be followed.

This group will receive glass ionomer sealant. Conditioning of the surface will be done using polyacrylic acid (10%) conditioner for 20 seconds, then rinsed and dried. Fuji triage will be applied after activating and mixing the capsule. Light cure for 20 seconds. Occlusion will be checked using articulating paper and necessary adjustments will be done using finishing burs.