Devices to Correct an Underdeveloped Lower Jaw #dentist #functional #orthodontist #Small_lower_jaw

Functional appliance to treat mandibular deficiency
Functional appliances are orthodontic devices used to correct mandibular deficiency (Class II malocclusion), where the lower jaw is underdeveloped relative to the upper jaw. These appliances promote the mandible's forward growth and improve the relationship between the upper and lower jaws. Here are some common functional appliances used to treat mandibular deficiency:

Herbst Appliance:

A fixed appliance that consists of metal rods and tubes connected to the molars of the upper and lower jaws.
It forces the lower jaw forward when the patient closes their mouth, encouraging growth in the correct direction.
Typically worn for 12-15 months.
Twin Block Appliance:

A removable appliance consisting of upper and lower plates with bite blocks that posture the lower jaw forward.
Designed to be worn full-time, including during meals, but can be removed for cleaning.
Usually used for 9-12 months, followed by additional treatment with braces if necessary.
Bionator:

A removable appliance that holds the lower jaw forward and guides its growth.
It also improves muscle function and encourages the correct development of the dental arches.
Typically worn for 12-18 months.
Frankel (FR-2) Appliance:

A removable appliance that uses lip pads and buccal shields to reduce pressure from the cheeks and lips, thus allowing the jaw to grow forward.
Focuses on modifying the soft tissues around the mouth and the jaw's position.
Treatment duration can vary but is generally around 12-18 months.
MARA (Mandibular Anterior Repositioning Appliance):

A fixed appliance similar to the Herbst but designed with a slightly different mechanism to move the lower jaw forward.
Provides constant forward positioning of the mandible.
Typically worn for 12-18 months.
Forsus Appliance:

A fixed, spring-loaded device that is attached to the braces and pushes the lower jaw forward.
It is often used with traditional braces to correct Class II malocclusions.
Usually worn for 6-9 months.
Each appliance works by applying gentle but continuous pressure to the jaw, encouraging it to grow more favourably. The appliance choice depends on various factors, including the patient's age, the severity of the malocclusion, and the orthodontist's preference and experience. Regular follow-up visits are essential to monitor progress and make necessary adjustments to the appliance.
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