Familiarizing with a child’s usual behaviour and predicting their responses in various circumstances can dictate the level of success of dental therapy and appointments, chiefly at the child’s first dental visit. Behaviour Genetics utilizes genetic means to investigate theroot of individual differences in behaviour.Fingerprints can dictate how a person feels, thinks and how one acts towards and during various circumstances.Behaviour genetics can act as an important behaviour assessment tool aiding in selection of appropriate behaviour management techniques. The current study aimed to probe extensively into potentiality of a relationship between behaviour and dermatoglyphics. Method: 440 subjects aged 3-6 years, who had come for their first dental appointment, were selected. Frankl’s behaviour rating scale was used to assess the behaviour of subjects during oral examination. Following which, subject’s thumbprints of both the hands were recorded using a digital fingerprint scanner and were analysed by an investigator trained in fingerprint analysis, to check for any correlation with the child’s behaviour. Chi square test was used for inferential statistics. The mean number of different types of fingerprint patterns were compared across the different levels of child behaviour using one-way ANOVA/Kruskal wallis test. Result: Outcome values for Right & Left Thumbprint patterns and Behaviourwere statistically insignificant. Conclusion: No association between thumb print and behaviour of children during their first dental appointment could be observed through this study. Further in-depth studies are required to confirm such a correlation as the behaviour of pediatric patients would vary according to various dental procedures.