Abstract
In the last 20 years, two different techniques for bonding fixed retainers have evolved, direct and indirect. Various diameter and alloy of wires are used for this purpose. Indirect method requires an elaborate laboratory procedure for holding the retainer wire on teeth surface for bonding. In the direct method, the retainer wire needs to be prefabricated for accurate fit on the lingual surface of the teeth. These methods have certain shortcomings inherent in them. To overcome these problems, two new techniques have been developed.
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