**Core Concept**
Talon cusp is a rare dental anomaly characterized by the presence of an additional cusp on a maxillary first molar. This anomaly is usually asymptomatic and may be discovered incidentally during a dental examination.

**Why the Correct Answer is Right**
The talon cusp is a result of an abnormal development of the tooth bud, specifically during the morphodifferentiation stage. This leads to the formation of an extra cusp, which can be either mesial or distal to the normal cusp. The talon cusp is thought to be caused by the overgrowth of the enamel organ, leading to an abnormal shape and size of the tooth. The talon cusp can be associated with other dental anomalies, such as enamel hypoplasia or supernumerary teeth.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because talon cusp is not typically associated with maxillary central incisors. Maxillary central incisors are more commonly affected by other dental anomalies, such as dens evaginatus.
**Option B:** This option is incorrect because talon cusp is not a characteristic of developmental tooth agenesis. Developmental tooth agenesis refers to the failure of one or more teeth to develop, whereas talon cusp is an anomaly of tooth morphology.
**Option C:** This option is incorrect because talon cusp is not typically associated with supernumerary teeth. Supernumerary teeth are extra teeth that can occur in the jaw, but they are not the same as a talon cusp, which is an anomaly of a single tooth.

**Clinical Pearl / High-Yield Fact**
Talon cusp is a rare dental anomaly that can be easily overlooked during a routine dental examination. However, it is essential to note that talon cusp can be associated with other dental anomalies, and a thorough dental examination is necessary to identify any underlying issues.

**Correct Answer: D. Maxillary first molars**