Enamel Hypoplasia

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The clinical examination of Enamel Hypoplasia: There are two main types of enamel hypoplasia, a hereditary type and an environmental in which both dentitions may be involved. Usually in the heredity type, only the enamel is infected whereas the environmental can affect both enamel and dentin. In mild environmental hypoplasia, few pits, small grooves or fissures are seen on the enamel surface (Fig.1) where in much more severe conditions the enamel may exhibit rows of deep pits arranged horizontally across the tooth surface. A single row of pits or several ones could be seen indicating a series of injuries(Fig.2). A considerable portion of enamel may be absent in the most serious cases suggesting a prolonged disturbance in the function …show more content…

Most frequently seen on: The maxillary and mandibular permanent incisors and the first molars. III. Molars are referred to as mulberry molars(Fig.3) and the anterior as Hutchinson’s teeth(Fig.4). Figure 3: Enamel hypoplasia of congenital syphilis (mulberry molars). The mandibular first molar shows many small globular masses of enamel on the occlusal portion of the tooth. Figure 4: Enamel Hypoplasia of congenital syphilis ( Hutchinson's incisors). There is characteristic notching of the incisal edges of the maxillary central incisors as well as tapering of the mesial and distal surfaces toward the incisal portion. Local Infection I. Appearance: Discoloration of the enamel surface to a mild, brownish color and severe irregularity and pitting of the tooth crown. II. Most frequently seen on: The permanent maxillary incisors or a maxillary or mandibular premolar. III. This type of Hypoplasia is often seen on a single tooth and it’s referred to as Turner’s teeth(Fig.5). Figure 5: Enamel Hypoplasia due to local infection (Turner's hypoplasia). The crown of the unerupted bicuspid is extremely irregular, owing to disruption of the forming tooth by infection through the preceding deciduous tooth (Courtesy of Dr Ralph E

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