What type of space discrepancy is assessed during Moyer's analysis?

Moyer's analysis is a method used in orthodontics to assess the amount of space needed for the proper alignment of teeth in the dental arch, particularly the permanent teeth. This analysis primarily focuses on determining the relationship between the space that is currently available in the dental arch and the space that is required for the proper alignment of the teeth as they erupt.

By calculating the mesiodistal widths of the lower permanent incisors and applying Moyer's tables, the orthodontist can estimate the total space necessary for the permanent dentition. This assessment is crucial for planning orthodontic treatment, as it helps identify whether there is a need for space creation, extraction, or other interventions.

The primary objective is to ensure an ideal alignment when considering the forthcoming eruption of teeth, particularly in cases where crowding or spacing issues are present. Thus, Moyer’s analysis is specifically tailored to evaluate space discrepancies, making the determination of "space needed vs. available" the key focus of this analysis.