Characteristics of skeletodental pattern in high angle cases

Kim, Sang Cheol; Kang, Kyung Wha; Lee, Kyung Whan

Abstract

The patient with an anterior open bite has one of the most difficult orthodontic problem to correct Previous studies have yielded different conclusions as to exactly where the morphologic problems associated with vertical dysplasia- high angle cases are located. In order to identify the cephalometric features of high angle cases and highlight the measurements that characterize high angle cases, 109 pretreatment cephalograms, 35 high angle, 37 average angle, and 37 low angle cases, were analyzed and compared statistically. As the mandibular plane was steeper, the anterior facial height, especially lower anterior facial height, became greater, and the posterior facial height became smaller. All the dentoalveolar vertical dimensions, especially in upper, increased. Arid all the skeletal angular measurements increased. Especially Lower gonial angle had most positive correlation to mandibular plane angle. Upper incisor was lingually inclined, and lower incisor was labially inclined in high angle cases.