What is the first step in Moyer's analysis for dental space estimation?

Moyer's analysis is a widely used method for estimating the space required for permanent teeth, particularly in orthodontic assessments. The initial step in this analysis involves measuring the mesiodistal (M-D) width of the mandibular incisors. This measurement serves as a critical foundation because it allows for the subsequent calculations related to the space required for the canines, premolars, and molars. By establishing the width of the existing incisors, practitioners can make informed predictions about the space needs for the developing permanent dentition.

Understanding the M-D width of mandibular incisors is crucial because the space the incisors occupy can influence the amount of space needed for the canines and the overall arch development. Accurately measuring this initial width ensures that the orthodontist has a reliable baseline to work from, making it easier to determine the need for space or any potential crowding issues as the patient develops. This method sets the stage for a comprehensive assessment of the dental arch and scheming out appropriate treatment strategies.