In-vivo part:~Each varnish will be applied separately on different teeth according to the manufacturer's instructions and the VAS will be measured according to a specific timeline: T0 (baseline, before application of varnish), T1 (1 week after application), T2 (4 weeks after application) and T3 (4 weeks after application).~In-situ part:~Dentin specimen will be prepared from extracted teeth from the orthodontic department in our college, sterilized and prepared.~it will be bonded to an orthodontic wire and bonded to upper first molar. Dentinal occlusion will be measured using scanning electron microscope following the same timeline.
2 different varnishes will be used to test their effectiveness in controlling teeth hypersensitivity in adult patient.