"maxilla" 的定义和意义

What is "maxilla"?

The maxilla, commonly referred to as the upper jawbone, is a facial bone located in the central part of the face. It plays a vital role in supporting the upper teeth and providing stability to the facial structure. The maxilla forms the majority of the hard palate, which separates the oral and nasal cavities. It also contributes to the formation of the nasal complex and houses the maxillary sinuses. The maxilla serves as an attachment point for various muscles involved in chewing and facial expressions. Its position and shape significantly influence the aesthetics of the face, particularly the appearance of the smile.