What is the characteristic feature of Type 1 Amelogenesis Imperfecta?

Type 1 Amelogenesis Imperfecta, also known as hypoplastic amelogenesis imperfecta, is characterized primarily by insufficient enamel formation, which can lead to thin or absent enamel. In this type of the condition, the enamel may appear normal in terms of matrix structure but lacks adequate quantity, resulting in potentially compromised aesthetics and increased susceptibility to caries and wear.

Individuals with Type 1 typically exhibit teeth that have a reduced thickness of enamel, making them more prone to chipping and sensitivity. While defective mineralization and immature enamel crystallites can be features of other types of amelogenesis imperfecta, they are not specific to Type 1. This particular condition is distinct in how it directly results in the underdevelopment of enamel. The presence of very thin enamel surfaces contrasts with other forms where the structural integrity of the enamel is more compromised, allowing for a clearer differentiation of Type 1 from others within the spectrum of amelogenesis imperfecta.