[Functional therapy of Class II Division 1. Comparison of three activators: Andresen, Fränkel and Teuscher].

Abstract

BACKGROUND:

A comparative study is reported about the efficiency of three activators (Andresen, Fränkel and Teuscher) in the treatment of Class II Division 1 malocclusions in a group of patients with different facial types.

METHODS:

A group of 20 patients in mixed dentition has been selected. The subjects were between 8 and 14 years old, provided with a complete radiographic documentation, treated in the Odontological Clinic of the University of Verona for a period no longer than 24 months. The study has been made using a cephalometric informatic program with a graphic computer. After a revision of orthopaedic functional literature, cephalometric values which, according to personal opinion, reflect the modifications occurred during treatment and growth have been chosen. Then these values have been reported in a triplic analytic configuration.

RESULTS:

The achieved results in each group of patients with the three activators have been examined analyzing structural modifications produced in the skeletric and in the dento-alveolar region. The comparison between the results obtained with the three activators and the findings reported in the majority of literature hasn't shown great disagreements.

CONCLUSIONS:

In the correction of Class II Division 1 malocclusions Andresen appliance is valid in subjects with normal/hypodivergent skeletric structure, while in patients with a facial type tending to "dolicocephal" the Fränkel function regulator and, in particular, Teuscher activator combined with extraoral traction have produced positive results with a contemporary correction of the sagittal skeletric discrepance.

• Authors: G Bertelè, T Leoci, F Stella, C Pisano
• Journal: Minerva stomatologica (Minerva Stomatol) Vol. 48 Issue 4 Pg. 115-23 (Apr 1999) ISSN: 0026-4970 [Print] Italy
• Vernacular Title: Terapia funzionale nella classe II divisione 1. Comparazione fra gli attivatori di Andresen Fränkel e Teuscher.
• PMID: 10431533 (Publication Type: English Abstract, Journal Article)

Topics

• Activator Appliances (classification)
• Humans
• Malocclusion, Angle Class II (therapy)
• Treatment Outcome