Tabriz University of Medical Sciences Journal of Dental Research, Dental Clinics, Dental Prospects 2008-210X 13 3 2019 11 07 A fixed intraoral nail biting habit-breaker appliance: A case report of a novel approach to prevent onychophagia 172 176 10.15171/joddd.2019.027 EN Shankhanil Dev https://orcid.org/03324439229 Ananya Pal Shabnam Zahir Gautam Kumar Kundu Journal Article 10.15171/joddd.2019.027 2018 11 11 2019 04 07 Onychophagia or nail biting is the performance of repetitive actions of biting one’s nails often to the level of mutilation of the nail beds. It is a compulsive act most often seen in adolescents but may continue into adulthood, leading to deleterious consequences. Often spurred by anxiety and stress, this oral habit is not so readily addressed by patients and in turn not very much treated by dentists or physicians. This case report describes successful treatment of an adolescent patient with a nail biting habit, with an innovative intraoral fixed habit-breaker appliance.