American Board of Orthodontics (ABO) Practice Exam 2026 - Free Orthodontics Practice Questions and Study Guide

The change in molar tip back degree observed in treated versus untreated groups, which is reported as 0.56 degrees, indicates that the use of the LHA (Lower Hinge Appliance) space maintainer had a specific impact on the molar positioning in the treated group compared to those who did not receive treatment.

This small yet significant degree of change suggests that while the LHA space maintainer has a notable effect on stabilizing or slightly correcting the molar tip back due to its design and mechanics, the effect is not exceedingly large. In orthodontics, even small movements can be clinically relevant, especially in the context of maintaining arch integrity and preventing further dental complications.

Understanding the degree of movement provided by a space maintainer is crucial for orthodontic practitioners as it helps inform treatment planning and expectations for tooth positioning changes during or after the use of a space maintainer.