Abstract
We experienced a case of idiopathic hypoparathyroidism in a 2-year,3 month old girl. She had hypocalcemia immediately after birth, and was diagnosed as having idiopathic hypoparathyroidism at the age of 3 months.
Vitamin D supplements and low phosphorus level milk were prescribed to correct the low serum calcium and high serum phosphorus concentrations. Severe growth failure persisted despite correction of her biochemical abnormalities. Slight mental retardation, sensorineural deafness, small hands and feet, and a depressed nasal bridge were found.
The eruption of the deciduous teeth was slightly delayed. Enamel hypoplasia was found in all of the deciduous teeth. Judged from the extent and specific placement of the enamel defects, enamel hypoplasia seemed to represent the result of a severe hypocalcemia episode occurring after birth. Radiographic examination revealed that there was no evidence of blunting of the root apexes nor thickening of the lamina dura while calcification patterns of the permanent teeth germs were within normal limits. Study model analysis revealed that the mesio-distal diameters of the deciduous teeth were small and the widths of the deciduous dental arch were also small.
