HOSA Dental Terminology Practice 2026 – All-in-One Study Guide for Exam Success!

The nasion is defined as the root of the nose located at the median sagittal plane, which is the vertical plane that divides the body into right and left halves. This anatomical landmark is where the frontal and nasal bones meet, making it significant in facial aesthetics and craniofacial anatomy. It is commonly used as a reference point in both orthodontics and maxillofacial surgery for various assessments and measurements regarding the growth and development of the face. Understanding the nasion and its position helps healthcare professionals accurately evaluate facial structure and plan any necessary treatments.