The objective of this study was to evaluate the photographic and radiographic classification agreement of the two main types of Class II subdivision malocclusions. The sample consisted of 44 untreated Class II subdivision malocclusion subjects with a mean age of 15.3 years. All possessed a full complement of permanent teeth up to the first molars and had not been submitted to orthodontic treatment. Frontal photographic evaluation was performed by means of a subjective evaluation by two examiners. Type I Class II subdivision malocclusion presents a coincidence of the maxillary dental midline with the facial midline and a deviation of the mandibular midline. Type II presents the opposite characteristics. Evaluation of the posteroanterior radiographs was performed by one examiner and the dental midline deviation was evaluated in relation to the X line. Agreement between the two classification methods was evaluated by the Kappa coefficient.Although results demonstrated a tendency of similar distribution for both types of Class II subdivision malocclusion in photographic and radiographic evaluation, agreement between these two methods of evaluation was not statistically significant.
Class II subdivision malocclusion; Photographs; Posteroanterior radiographs
