Scanning Еlectron Мicroscopy of Еnamel and Dentin of Тeeth with Hypocalcified Аmelogenesis Imperfecta

Abstract

UNLABELLED: The histological features of teeth with hypocalcified amelogenesis imperfecta (AI) have been poorly studied, which calls into question the effectiveness of modern adhesive techniques used in the treatment of these noncarious defects. AIM: The aim of this study was to investigate the morphological features of the enamel and dentin of teeth with AI using scanning electron microscopy (SEM), and compare these features with those of healthy teeth. MATERIALS AND METHODS: We examined four primary teeth extracted on indication from a 10-year-old girl with hypocalcified amelogenesis imperfecta. The same number of primary teeth extracted from healthy subjects was used as controls. The morphological characteristics of the enamel and dentin are described after investigating the teeth and photographing the specimens with scanning electron microscope. RESULTS: The SEM photos of the enamel of AI teeth show presence of external defects, incorrectly oriented enamel prisms and enlarged interprism spaces. Thickening of the peritubular dentin and partially obliterated dentinal tubules characterize the dentin of these teeth. CONCLUSION: The enamel and dentin of teeth affected by hypocalcified AI diff er considerably from normal hard dental structures in their morphological characteristics.