Are Herbst appliances removable or fixed?

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Multiple Choice

Are Herbst appliances removable or fixed?

Explanation:
Herbst appliances can be both fixed and removable. The concept is that the appliance acts to posture the mandible forward to encourage a Class II correction, and this idea exists in both fixed designs (cemented to molars with a connecting mechanism) and removable designs (which patients can take out for hygiene or comfort). The fixed version provides continuous wear and is typically more reliable for consistent forward guidance, while the removable variant offers greater hygiene and easier cleaning but relies on patient compliance. In modern practice, you’ll see both approaches used, hence the choice indicating both options is correct.

Herbst appliances can be both fixed and removable. The concept is that the appliance acts to posture the mandible forward to encourage a Class II correction, and this idea exists in both fixed designs (cemented to molars with a connecting mechanism) and removable designs (which patients can take out for hygiene or comfort). The fixed version provides continuous wear and is typically more reliable for consistent forward guidance, while the removable variant offers greater hygiene and easier cleaning but relies on patient compliance. In modern practice, you’ll see both approaches used, hence the choice indicating both options is correct.

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