Very simply explaining, there are 2 types of methods:
1. Removable appliances -commonly known as wearing of a plate. Patient an remove it and clean it and bear less cost. Mild discrepancies could be treate with this.
2. Fixed appliances as wearing of braces. Since it is fixed on to the teeth patient finds it a bit difficult to clean the mouth. Quite expensive and severe discrepancies could be treated with this.
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