Hemifacial microsomia and hypodontia: a case report

Abstract

A 6-year-old girl with hemifacial microsomia was examined. Abnormalities found were: severely malformed pinna of the right ear, right malar hypoplasia and unilateral mandibular hypoplasia. Dental examination revealed normal intraoral soft tissues with all deciduous teeth present. Radiographic examination disclosed that the maxillary and mandibular right and left second premolars were not developing. The mandibular ramus was short in length and the mandibular condyle had not developed on the right. The patient had no renal, cardiac or skeletal anomalies and her hearing was normal. No previous publications have been located which report the association of hypodontia and hemifacial microsomia.

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“…Rare delayed development of tooth had been reported in some cases [12]. However our patient did not present with any significant dental findings except for diastema.…”

Tooth size and morphology in hemifacial microsomia

“…Farias & Vargervik [6] found that subjects with HFM have delayed tooth development on the aected side as compared with the non-aected side and a higher incidence of tooth agenesis than the unaected population. Hypodontia has also been reported by others [7,8]. Since these data and clinical observations indicated that tooth size and morphology also might be involved in HFM, we conducted this study to determine the magnitude of tooth size asymmetry and possible aberrations in tooth morphology in subjects with dierent degrees of HFM.…”