Exploring the First Two Keys of Class II Correction: Maxillary Arch Development & Maxillary Molar Position

In the Spring 2014 issue of the JAOS, my friend and mentor Leonard J. Carapezza, DMD wrote an article titled: Six Keys to Early Mixed Dentition Class II Correction: A Quantified Approach to Diagnosis and Treatment.² Dr. Carapezza’s article gives an overview of many important aspects of Class II treatment. In the next several issues of the JAOS, I will use the Six Keys described as an outline to explore each in depth.

This article will focus on the first two keys: Maxillary Arch Development and Maxillary Molar Position, describing techniques utilized in my practice and when I use them. A potential biomechanical problem exists when expanding transversely across the maxillary arch. This will be discussed and possible solutions to minimize or avoid it are offered. Many of the techniques described apply not only to the maxilla but to the mandible as well and also to Class I and Class III malocclusions.