Inclusion Criteria for mother's of children enrolled in study:  Has children between 2 and <5 years of age Has children with high plaque index scores (PlI≥2 or visible plaque accumulation on maxillary anterior teeth). Literate and owns a mobile phone with already set-up or possibility to set-up Whats-App messenger application. Willing to participate in the study and receive periodic OHPm and ST videos.  Exclusion Criteria:  Mothers of children who are not willing to cooperate and show a definite negative behavior (Rating 1 Frankel's classification). Mothers of children who are physically disabled or medically compromised. Mothers of children in need of emergency dental treatments.