Appliances are used to change the way the jawbones are growing, or to move the teeth when braces alone are not sufficient to fully correct your orthodontic problem.
The Distal Jet is an appliance that uses a compressed spring to gently push the upper teeth back and correct the bite. It distalizes, or moves, the upper molars backward and fixes the way the the teeth match up to one another.
The Herbst appliance has revolutionized the way orthodontists treat an overbite. Sometimes described as looking like a pair of shock absorbers, it uses a pair of tube and rod mechanisms to put pressure on the lower jaw to help it grow forward. The device is attached to the back molars of both sides of the upper and lower jaws.
Lower Lingual Arch (LLA)
The Lower Lingual Arch is used to maintain space for emerging adult teeth or to hold space where primary teeth have been removed prematurely. It prevents the permanent molars from shifting forward, allowing crowded teeth to spread out. This appliance consists of two orthodontic bands that are cemented to the lower molars with a U-shaped bar attached to them on the tongue side of the teeth.
The Nance is an appliance that is used to prevent the upper molars from rotating or moving forward. It is also used to maintain the width of the upper jaw after it has been widened. It is made of two orthodontic bands that are cemented onto the upper molars, with a wire that spans the roof of the mouth. An acrylic pad covers the wire and touches the roof of your mouth.
The Pendex is designed to expand the width of the upper jawbone and to move the upper molars in a backward direction. It uses springs to move the upper molars backward and is made of acrylic and wires that are bonded to your upper molars, and an expansion screw that is used to widen the upper jawbone.
The Pendulum is used to push the upper molars back into their correct position with springs. It is made of acrylic and wires that are bonded into place.
Rapid Palatal Expander (RPE)
Attached to the upper molars, the Rapid Palatal Expander (RPE) is a device used to widen the upper jawbone. It is typically used when the upper jawbone is narrow or when the upper teeth are crowded or pushed out of the dental arch. The RPE is activated by turning a screw in the center of the appliance with a special key that pushes the upper molars outward. This expansion causes an increased amount of bone to grow between the right and left halves of the jaw.
Reverse Pull Headgear (RPHG)
Reverse Pull Headgear (RPHG) is used to correct an underbite on a growing patient by pulling the upper jaw forward. Elastics are connected from attachments on the upper jaw to the facemask. RPHG must be worn a minimum of 14 hours per day to increase forward upper jawbone growth. Pictured is actress Dakota Fanning wearing her RPHG!