metaconule

A metaconule is a type of tooth found in the upper jaw of some mammals, including humans. It is one of the four types of teeth in the permanent dentition, the others being incisors, canines, and molars. The term "metaconule" comes from the Greek words "meta," meaning "after," and "conulus," meaning "little cone," referring to its position and shape.

The metaconule is a small, conical cusp located on the lingual surface of the first molar. It is situated between the protoconid and the hypoconid, and its primary function is to aid in the grinding and crushing of food. The metaconule is unique to the first molar and is not present in the second or third molars.

In humans, the metaconule typically appears around the age of 6, when the permanent teeth begin to erupt. It is one of the last permanent teeth to develop, and its eruption can be delayed or even absent in some individuals, a condition known as metaconule agenesis.

The metaconule is a relatively small tooth, and its size and shape can vary among individuals. It plays a crucial role in the overall function of the molar teeth, contributing to the efficient breakdown of food. However, due to its small size and location, the metaconule is often overlooked in dental examinations and treatments.