Background: Dental anxiety is an abnormal feeling or a dreadful feeling that keeps the child away from visiting a dentist. Dental anxiety can lead to dental neglect in children compromising their oral health and impacting their quality of life.

Aim: The aim of the study was to assess the effectiveness of combination of a mobile dental app and tell-play-do in the management of children’s behaviour before and after dental treatment

Materials and methods: Sixty children of the age group 5-8 years were divided into two groups of 30 each. Children in Group I was control group that received no intervention while Group 2 achieved intervention through the use of a mobile dental app “Little Lovely Dentist” and were also explained about the procedure through tell-play-do. For both the groups, heart rate was recorded with the use of pulse oximeter and the anxiety levels were estimated using facial image scale before and after the treatment.

Results: After observations Group 2 showed better results as the heart rate and FIS were reduced when compared to Group 1 THAT shows the effectiveness of mobile dental app and tell play do on the behaviour of children.