The depth of the mandibular antegonial notch as an indicator of mandibular growth potential

Typology of the antegonial notch in the human mandible

“…During the examined period the deep notch patients experienced a smaller increase in total mandibular length and body length, and less displacement of the chin in a horizontal direction (and thus had more retrusive mandibles) than did the shallow notch subjects. Singer et al [18] also found that patients with a deep mandibular notch had a longer total and lower facial height. During the study period the depth of the notch increased in the deep notch subjects and decreased in the shallow notch subjects.…”

“…Singer et al [18] carried out a 4-year continuous study of 25 orthodontically treated patients and found, based on radiographs, that deep notch cases had more retrusive mandibles with a shorter body, smaller ramus height, and a greater gonial angle than did shallow notch cases. During the examined period the deep notch patients experienced a smaller increase in total mandibular length and body length, and less displacement of the chin in a horizontal direction (and thus had more retrusive mandibles) than did the shallow notch subjects.…”

Dimensional differences in mandibular antegonial notches in temporomandibular joint ankylosis

“…The clinical presence of a deep mandibular AN is indicative of a diminished mandibular growth potential and a vertically directed mandibular growth pattern. 11 However, the correlation analysis by Kolodziej et al revealed a statistically significant negative relationship between the adolescent AN depth and the horizontal growth of the maxilla and the mandible from adolescence to adulthood. Although previous investigators proposed that AN depth, when extreme in magnitude, might be used to predict the facial growth, they concluded that the AN depth fails to provide a sufficient indication of the future facial growth to warrant its application as a growth predictor in a nonextreme population.…”

Predicting vertical growth of the mandibular ramus via hand–wrist radiographs

“…Previous studies have aimed to show that morphologic characteristics can help predict growth increments of the mandible [21,37,38]. In this study we questioned whether growth prediction according to Greulich and Pyle in combination with other vorherigen Aussagen überein, nach denen das Wachstum männlicher Individuen im Vergleich zu weiblichen Individuen verzögert ist [12,16,23].…”

“…Vorherige Studien hatten die Intention zu zeigen, dass mit Hilfe morphologischer Charakteristika der Wachstumszuwachs der Mandibula vorhergesagt werden kann [21,37,38]. In dieser Studie dagegen wurde untersucht, ob eine Wachstumsprognose nach Greulich und Pyle in Verbindung mit anderen Charakteristika des Patienten eine präzisere Wachstumsvorhersage der Mandibula in vertikaler Richtung ermöglichen würde.…”