ORTHODONTIC TREATMENT USING REMOVABLE FUNCTIONAL APPLIANCE AND PLATES

Twin block is a removable functional appliance for malocclusion correction. It is composed of two parts – upper and lower plates which position lower jaw to the front position. This releases a lower jaw and promotes bone growth. The plates of Twin block fix jawbones in a certain position and more correct bite is formed. Upper (and sometimes lower) plate may have expansion screws to expand jaw arches. Treatment with Twin block appliance usually lasts 12-18 months.

 Twin Block


“Twin block” appliance  is the most effective for children in fast growing phase. During this period, undeveloped lower jaw bone can be corrected. Usually “twin block” is an option for the “First phase” after which the “Second phase“ treatment with bracket system and retention may follow.

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1 po

“Twin block” ensure fast functional correction of occlusion by transfering of occlusion forces to occlusion planes which cover the sides of teeth. Occlusion forces are used as functional mechanism for correction of teeth occlusion.

As well, other positive physiological changes are noticed due to increased throughput of respiratory system.

Appliance is suitable for correction of distal and deep bite.

Two - phase orthodontic treatment using a rapid expansion appliance and bracket system.

Rapid expansion appliance is used to expand upper jawbone. After treatment with a rapid expansion appliance, treatment is usually followed by using bracket system.

Treatment process using fast expansion appliance:

Rapid expansion appliance is cemented in a mouth.  Gap between central incisors appears while rotating the screw.

PA1

Fully screwed rapid expansion appliance. Perimeter of dental arc increase.

PA2

Fixation of bracket system for correction of position of individual upper teeth, while keeping upper jawbone expanded.

PA3

After treatment.

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Before and after

Before

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After

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Doctors

Eglė Zasčiurinskienė

Physician orthodontist. Graduate of Sweden Jönköping University. Lector in Lithu...