A patient gives a history of previous chronic abscess on the deciduous precursor of 11. The following radiograph indicates:

Turner’s Hypoplasia This condition represents a defect occurring during amelogenesis that is the result of either local trauma or infection originating from the deciduous predecessor. Radiological signs If the deformity is minimal, the tooth will show a localized area of hypoplasia. A prolonged disturbance will lead to pronounced changes in tooth morphology that include gross deformity, irregularity and a reduction in crown size. Key Concept