Enamel hypoplasia is a defect in tooth enamel that results in less quantity of enamel than normal. The defect can be a small pit or so widespread that the whole tooth can be mis-shaped. This type of defect can cause sensitivity, may be unsightly, and may be more susceptible to dental cavities. Enamel hypoplasia can occur on 1 tooth or many teeth. It can appear white, yellow, or brown in color with a rough or pitted surface. In some cases the quality of enamel is affected as well as the quantity of enamel. Some genetic disorders cause all teeth to have enamel hypoplasia. Click here to read more about causes and treatment of enamel hypoplasia.
reference: http://www.uiowa.edu/~c090247/ENAMEL_HYPOPLASIA.pdf Pediatric Dental Center Warren, MI Dr. Shah, Dr. O’Riordan