Frenkel type III is indicated for which malocclusion?

• A. Malocclusion Class I by Angle
• B. Malocclusion Class III by Angle
• C. Malocclusion Class II/1 by Angle
• D. Malocclusion Class II/2 by Angle

Answer: (B)

Frenkel type III is used for skeletal Class III malocclusion, usually due to maxillary deficiency or a prognathic mandible in growing patients. The appliance acts as a functional regulator to encourage forward growth of the maxilla and retrain perioral muscle function (tongue and lip posture), helping to improve the bite and facial balance. This targeted approach addresses the underlying skeletal pattern rather than just dental alignment, which is why it’s the best fit for this pattern. It isn’t indicated for Class II or Class I malocclusions, which involve different skeletal or dental considerations.