Funktionelle Behandlung des tiefen Bisses-Ergebnisse einer Langzeitstudie

Abstract

The amount of overbite reduction and the stability of the results three to 14.5 years post-retention were analysed in a follow-up study of 60 patients who had been treated with functional appliances. To establish therapeutic and posttherapeutic changes in dento-facial relationships, plaster casts and lateral cephalograms were evaluated at the beginning, at the end of treatment and at the follow-up examination. Posttherapeutic deepening of the overbite (> 0.8 mm) was found in 54.2% of the cases, while overbite reduction remained stable in 39%. A number of skeletal and dental factors were found to be involved in overbite reduction and posttreatment deepening. In this connection, changes in the ML-NSL angle, the ML-NL angle and the gonion angle were found to be just as important as the therapeutic and posttherapeutic changes in anterior and posterior facial height and changes in the skeletal pattern. It is emphasized that strict application of retention is of the greatest importance to minimize vertical relapse.

Changes in Gingival Recession Related to Orthodontic Treatment of Traumatic Deep Bites in Adults

“…These include removable [13,17,21] and fixed appliances [5,29], and combined orthodontic-surgical solutions [4,40,41]. In such cases, the correction of an overbite is primarily induced by protrusion of the incisors and extrusion of the molars, rather than by incisor intrusion [29].…”

“…Dazu gehören herausnehmbare [13,17,21] und festsitzende Techniken [5,29], sowie kieferorthopädisch-kieferchirurgische Lösungen [4,40,41]. Dabei wird die Korrektur des Overbite mean intrusion values of 1.5 mm in the maxilla and 1.9 mm in the mandible [26].…”

Intrusion oder Extrusion als Behandlungsmöglichkeit des Tiefbisses

“…Als bester Zeitpunkt für einen Therapiebeginn wird im Allgemeinen die präpubertäre Wachstumsperiode angenommen, da in dieser Zeit der Entwicklungsphase noch die Möglichkeit der skelettalen bzw. neuromuskulären Anpassung besteht [12]. Dies wiederum ermöglicht eine skelettale als auch dentale Korrektur der Malokklusion und führt zu einem langfristig stabilen Ergebnis.…”