Abstract
We encountered three cases of familial partial anodontia diagnosed as ectodermal dysplasia.
The results were as follows,
The proband was a 8-year-and-3-month old female. She was missing congenitally both deciduous teeth _??__??__??_ and the permanent teeth _??__??__??_. Her occlusion was an anterial cross bite, because her maxilla was relatively small compaired to her mandibular. A partial denture was used to improve mastication and for aesthetic purposes.
Her elder brother was 9 years and 7 months old. He was not missing congenitally deciduous teeth, but permanent teeth _??__??__??_. All of his deciduous teeth still remained. His occlusion was an edge-to-edge bite.
Their mother was 32 years and 11 months old. She was missing congenitally permanent teeth _??__??__??_, although congenitally missing deciduous teeth were not clearly revealed. Partial dentures and a bridge were used.
From the clinical findings together with the family history, we diagnosed that their partial anodontia was caused by ectodermal dysplasia that was transmitted in an autsomal recessive manner.
