“…Important aspects such awareness, attitude, practices, willingness and barriers were evaluated using hand-delivered, self-administered or via electronic contact were searched. Studies were conducted in many different clusters like dental universities [62], dental health professionals [7,9,12,13,17,32,46,48,[50][51][52]55,56,[63][64][65], dental insurance companies [61], students [1 5,21,28,31,32,38,39,45,47,49,51,53,55,66], dental patients who use tobacco [30,67,68] and dental teachers [44].…”