Objectives. The aim of this work is to define the advantages and limitations of Invisalign compared to traditional orthodontic methods. Materials and Methods. We conducted a systematic review of the literature through the use of different databases, like MedLine , PubMed , Scopus. The research covers the period between 2000 and 2011. Other sources were selected from the references cited in the works consulted. Results and Conclusions. Scientific research over the years led to the development of solutions to meet the aesthetic and functional needs, from ceramic brackets and lingual technique until the widespread use of clear aligners, started in the Nineties which today represent a valuable treatment option for the most demanding patients .
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