American Board of Orthodontics (ABO) Practice Exam 2026 - Free Orthodontics Practice Questions and Study Guide

The condition characterized by orange-yellow teeth upon eruption is indeed associated with Amelogenesis Imperfecta (AI) Type III. This specific type of amelogenesis imperfecta is known as the "hypoplastic-hypomaturation type." It leads to the formation of teeth that are often discolored, presenting an orange-yellow hue due to the alteration in enamel structure and mineralization.

In AI Type III, the enamel prisms are defective, resulting in weaker enamel that is less mineralized than normal. This defect affects the color of the teeth, making them appear different than the usual white or ivory. The structural issues can also affect the enamel's translucency and ultimately lead to teeth that are thinner and more prone to wear, further complicating their appearance.

Understanding the distinct characteristics of AI Type III helps in recognizing it not only by the color of teeth upon eruption but also by the challenges it poses for dental health and aesthetics. This distinction is crucial for proper diagnosis and management in clinical practice.