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Top (left) and bottom (right) retainers Vacuum form retainer in the foreground (used on upper); illustration of an early Hawley retainer in the background. Orthodontic retainers are custom-made devices, usually made of wires or clear plastic, that hold teeth in position after surgery or any method of realigning teeth.
The expansion process usually results in a large gap between the patient's two top front teeth, often known as diastema. This gap is closed naturally and the teeth may overlap which leads to braces being needed. Some may develop a large space while others do not develop a space at all.
After braces treatment, patients can use a transparent plate to keep the teeth in alignment for a certain period of time. After treatment, patients usually use transparent plates for 6 months. In patients with long and difficult treatment, a fixative wire is attached to the back of the teeth to prevent the teeth from returning to their original ...
Typically used in children, this device attaches rings glued to the top and bottom teeth. This metal appliance is often worn at the same time as braces. Twin block appliance: The twin block appliance is a removable appliance, and its high comfort level allows you to wear it 24 hours a day. This appliance actually is made up of two separate ...
The time required for braces varies from person to person as it depends on the severity of the problem, the amount of room available, the distance the teeth must travel, the health of the teeth, gums, and supporting bone, and how closely the patient follows instructions.
The computerized model suggests stages between the current and desired teeth positions, and aligners are created for each stage. Each aligner is worn for 22 hours a day for one or two weeks. [6] These slowly move the teeth into the position agreed between the orthodontist or dentist and the patient. The average treatment time is 13.5 months. [7]
As a general rule, at least 4 mm of sound tooth structure must be exposed at the time of surgery. This, allows for proliferation of the supracrestal soft tissues, which are estimated to cover 2– 3 mm of the coronal root structure thereby leaving 1–2 mm of sound tooth structure supragingivally.
Class 2 elastics are used from the lower first molar to the upper canine tooth. [1] They can be used for many different reasons, such as Class 2 malocclusions, to reinforce anchorage in a case where an extraction has been done, to allow the maxillary incisors to move backwards, and to correct midline deviation and allow buccal movement of ...