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Enamel hypoplasia is a defect in the enamel due to. disturbance of ameloblastic function during amelogenesis. The etiology of such a disturbance may be either genetic or. environmental in nature. This case report of undetected. congenital idiopathic hypoparathyroidism emphasizes the. importance of investigating the underlying cause of these. enamel defects. Introduction. Enamel hypoplasia is a defect in enamel that arises. from a disturbance of ameloblastic function during. amelogenesis and is characterized by a reduction in. enamel thickness. Clinical manifestations may occa-. sionally appear as pitting, furrowing and absence of. enamel. L~3 Amelogenesis consists of two distinct.
There are two main causes of osteomalacia: (1) insufficient calcium absorption from the intestine because of lack of dietary calcium or a deficiency of, or resistance to, the action of vitamin D; and (2) phosphate deficiency caused by increased renal losses.he most specific screening test for vitamin D deficiency in otherwise healthy individuals is a serum 25(OH)D level. Less common causes of osteomalacia can include hereditary deficiencies of vitamin D or phosphate (which would typically be identified in childhood) or malignancy.