Contrary to popular belief, not spliced molarfixed to the bone of the jaw. Just root it firmly dragged in the dental hole thin fibers of the connective tissue. These elastic yarn arranged in a narrow gap between the bone wall and the root of the tooth. Teeth are able to move on their own when cutting.
They succumbed to the forces, especiallyapplication to change their position. When the wall is directed tooth small long hole pressure, at this point it dissolves, opening a space for tooth movement. On the other hand, where the stretch connective tissue fibers, new bone is formed, propping tooth without giving it back to its original place to sit.
It is also remarkable biological propertythat persists throughout life. Thus, nature has taken care to allow for the offended by it on the teeth has always remained the possibility to eliminate this injustice. With, of course, experts.
What are the modern devices of bite correction
Devices for bite correction are divided intomechanical, resulting in teeth in a decent view through spring and arcs under pressure, and functional - affecting the muscles of the maxillofacial region, and language.
The latter are called trainers and good, if the child is 7-10 years. They can stimulate or slow the growth of the jaw, palate change the width and shape of the jaw bones.
Mechanical means, in turn, divided into removable and non-removable occlusion system for correction.
This is primarily a removable platewhich are hypoallergenic plastic form to the upper or lower jaw. The plate is made individually by a cast and retained on a patient's teeth wire hooks. While eating, brushing your teeth, it can be removed in order to then put on again. For straightening crooked teeth in a removable device is mounted wire arches, loops and springs. If the task of expanding the jaw, between the halves of the plate and insert the screw extends. Gradually, with the replacement of the temples all over the correct form corresponding teeth, this system aligns dentition.
These systems are easy to remove before eating, wash andclean. However, the effectiveness of their use is high only for children up to 12 years - as long as there is an active formation of the jaw. In addition, children are very fond of shooting records at every opportunity and often forget to wear them.
Fixed systems (braces)
There are also non-removable mechanical action system - popular today braces.
The fixed equipment is built in the mouth for the entire coursetreatment. Its structural components are glued to the teeth and can not be removed. Even when using a variety of power system elements subjected to regulation by the doctor.
In English the bracket means "bracket". In fact, this "bracket" is an extremely difficult configuration, highly accurate and jewelry for the implementation of the product.
Braces are mostly made of stainless steelmedical supplies. However, there are braces and gold, precious stones, pure titanium, a single crystal, composite, ceramics, special glass, plastic ...
brackets set consists of 20 items, of10 which are glued to the upper teeth 10 - the lower with a special adhesive. The doctor sticks brackets on each tooth in a certain sequence, and then binds them together the arc, which is inserted into the horizontal groove of the bracket and is assigned to the "wings" elastic or wire ligatures. Doug fixed on special metal rings, which are placed on a support - usually a sixth teeth.
The wire connecting the elements of the bracket hasmemory. It sets the teeth programmed direction of travel on the way to the correct position in the mouth. Wire arc of a section of a profile is fixed at a certain, defined degree of tension.
The peculiarity of the wire is that itsuperelasticity. Superelasticity appears that you can wire it as many twist, bend, tie loops - wasted effort, she once again return to its original state. And here it is - the starting position - just set in memory.
The form can be arbitrarily intricate,however, upon the occurrence of a certain temperature - for example, 36.6 degrees Celsius, wire, whatever before, "she remembers" and takes shape, she was asked. If you put it in the refrigerator, it will lose shape. Then, he warmed in the mouth to restore. And this recovery, in this case the character will work on tension, tooth compulsion to straighten your posture.
Braces do the will of the doctor as to whether, in thewhat direction and to what degree rotate, or tilt, or tilt, rotate, or that corrects tooth. "Course" of the bracket laid in the groove geometry, which is transmitted through an external force. Each bracket slot his own, individual. He (the groove) must be suitable to the profile of the power wire, but the inclination to the horizontal and vertical axis must conform strictly specific problem of tooth rotation. Set geometry and types of grooves, respectively, a set of brackets is such that one can find a suitable for absolutely any occasion.
Thus, the power cord through the bracket has a grooveslight continuous pressure on the "wrong" tooth. This continuity - day and night, month after month - leaves no chance the tooth and the surrounding tissue during the break though how many restore status quo, making the treatment highly effective.
What are the pros and cons of braces
Fixed systems (braces) are more progressive,than removable. Only non-removable devices can move the tooth cabinet, ie without tilt, straighten the tooth root, shorten or lengthen a tooth, the tooth rotate on an axis. Finally, the only non-removable devices can correct misaligned teeth in adult patients.
The main disadvantage of braces - their high cost. Requirements for materials used in orthodontics, braces, to their machining quite high, which determines their high cost. In addition, fixed systems place high demands on dental hygiene. After each meal must be carefully cleaned from food residues braces, can not eat chewing gum, etc.
Wearing braces have long enough - inaverage of about 1.5-2 years. Nevertheless, the availability of financial opportunities, it makes sense to go through this treatment. In fact, besides perfect smile you can get rid of the complexes associated with the appearance, and gain self-confidence.