Adjusting A-N-B Angles to Reflect the Effect of Maxillary Position
The angle A-N-B is a popular indicator of apical base relationships. Maxillary protrusion also has a major influence on that angle that is superimposed on the apical base effect. These effects are algebraically additive, so they may cancel each other in one patient and add together to produce a large reading for the A-N-B angle in mother, A simple method of compensation for these misleading effects is presented here.
Read in part at the July, 1980 meeting of the Southwest Component of the Angle Society.
Abstract
Contributor Notes
Dr. Freeman is in the private practice of orthodontics in Denver, Coloradio. He is a dental graduate (D.D.S.) of Northwestern University and holds an M.S.D. degree in Orthodontics from the same institution. He is a Diplomate of the American Board of Orthodontics