# What is a Herbst appliance?

Publisher: Virtual Consultant Online
Published: 2026-05-24
Updated: 2026-05-24
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A Herbst appliance is a fixed functional appliance used to correct an overjet (protruding upper teeth or receding lower jaw) by holding the lower jaw forward during growth. It is typically used in growing patients — usually aged 10–14 — where repositioning the jaw through growth modification is possible. Unlike braces, which straighten teeth, the Herbst appliance modifies the jaw relationship. It is usually worn full-time for 12–18 months and is fixed to the upper and lower teeth, so it cannot be removed by the patient.

This answer is informational and does not replace a full clinical examination by a dentist or orthodontist.