PMID: 16646639May 2, 2006Paper

SEM-morphology in dentinogenesis imperfecta type II: microscopic anatomy and efficacy of a dentine bonding system

European Journal of Paediatric Dentistry : Official Journal of European Academy of Paediatric Dentistry
G GallusiV Campanella

Abstract

Dentinogenesis Imperfecta is a hereditary defect consisting of opalescent teeth composed of irregularly formed and undermineralised dentin that obliterates the coronal and root pulpal chambers. The aim of this study was to examine the morphology of permanent human enamel, dentine and the dentine-enamel junction, in individuals affected by Dentinogenesis Imperfecta type II in undercalcified sections using scanning electron microscope (SEM) to compare the findings to the normal morphology, and to study the efficacy of modern bonding system to dentine and enamel DI type II affected. Four third molars extracted from two 19 year-old subjects (one patient affected by Dentinogenesis Imperfecta type II) were included in resin, two divided in slices with a air-cooled diamond disc, and two used to study the characterisation of the resin-dentin interface. The sections of the teeth were examined by means of SEM. The slices were finished up with abrasive paper (400, 600, 1000, and 2000), the half surfaces obtained were etched with 37% phosphoric acid and then joined up to the stubs for SEM analysis. SEM Stereoscan 440 Leica with magnifications of 20X, 100X, 250X, 1000X, 2000X, 3000X was used. As control group were used four third molars wit...Continue Reading

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