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The Function Regulator III: effects and indications for use.

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The FR.III appliance effectively corrected anterior crossbite in Class III malocclusion cases by adjusting incisor inclinations and mandibular positioning. Favorable outcomes were observed in patients with severe malocclusion and deep incisor overbite.

Area of Science:

Orthodontics
Dentofacial Orthopedics

Background:

Class III malocclusion is a complex dentofacial anomaly characterized by a prognathic mandible or retrognathic maxilla.
Anterior crossbite is a common feature of Class III malocclusion, impacting facial aesthetics and masticatory function.

Purpose of the Study:

To evaluate the efficacy of the FR.III appliance in treating Class III malocclusion.
To identify factors influencing treatment outcomes with the FR.III appliance.

Main Methods:

Retrospective analysis of 20 cases of Class III malocclusion treated with the FR.III appliance.
Assessment of treatment effects on incisor inclinations, mandibular position, and facial height.

Main Results:

Correction of anterior crossbite was achieved through adjustments in incisor inclination and mandibular repositioning.

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An increase in anterior face height was observed during treatment.

Patients with severe Class III malocclusion and deep incisor overbite showed the most favorable responses to FR.III treatment.

Conclusions:

The FR.III appliance is an effective treatment modality for correcting anterior crossbite in Class III malocclusion.
Treatment outcomes are influenced by the severity of malocclusion and the presence of deep incisor overbite.