Onychophagia, or nail biting, is a fairly common nervous habit that most commonly occurs in childhood, though many adults also suffer from it. Considered an obsessive-compulsive disorder, this activity can damage your teeth.
Nail biting can potentially result in alveolar destruction, crowding, rotation, malocclusion, or attrition of the incisors.
Read the full article here: The nail-biting truth of onychophagists
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