Angle classification revisited. 1: Is current use reliable?

Abstract

The Angle method for the classification of malocclusion has been the standard in orthodontics for 100 years, but many academics and private practitioners find difficulty applying the Angle system to malocclusions in between fully Class II and fully Class III. To evaluate whether orthodontists are consistent in classifying malocclusions accordings to Angle's method, study models were selected of three patients with ideal buccal occlusions, two patients with mutilated occlusions, and five patients with varying degrees of Class II tendency. One buccal view was photographed of each study model, and a questionnaire was printed and sent to 347 orthodontists. The 77.8% response demonstrated significant interest in the subject of dental classification and significant disagreement among orthodontists in their classification response with all patients except the two obvious ideal occlusions. Respondents were given the opportunity to comment on Angle classification and their recommendations for improved classification techniques. Many of their comments are quoted.