A Rare Hypodontia and Delayed Eruption of a Mandibular Permanent Incisor: A Case Report and Literature Review

Hypodontia is the most common dental anomaly in humans and is defined as a condition in which there is one to six congenitally missing teeth, excluding the third molars. Genetics as well as environmental factors play important roles in the aetiology of hypodontia. The most commonly missing teeth are the mandibular second premolars followed by the maxillary lateral incisors. This report presents a rare case of agenesis of maxillary permanent canines, mandibular permanent central incisors and right mandibular permanent lateral incisor in conjunction with delayed eruption of the mandibular permanent left lateral incisor in a healthy nine-year-old male Lebanese patient without any family history of this condition.