Orthodontics fixed retainers and technics of placing

After orthodontic treatment, certain cases have high potential of relaps.These cases reqire fixed retainers.Fixed lingual retainers were introducsd in 1970s and In the last 20years several different techniques for bonding fixed retainers have evolved.Review report: This review carried out by use of searching in various databases including Pubmed and Google Web of Science from 1973 to 2011 on combination of the terms orthodontic retainer and resin bonded retainer. The indirect method requires a laboratory procedure for holding the retainer´s wire on teeth surfaces for bonding but in the direct method,the retainer´s wire needs to be prefabricated for fit the lingual surface of the teeth.Several methods have been used to hold the wire on the teeth surfaces. In this article,we introduce some methods. Perception of advantages and disadvantages of several methods of placing lingual retainer, which are simple and cost-effective,enable the dentist to choose the most suitable method.