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1 A new type of clear orthodontic retainer incorporating multi-layer hybrid materials
Hyo-Won Ahn, Kyung A Kim, Seong-Hun Kim
Korean J Orthod.2015;45(5):268-272.   Published online 2015 September 23     DOI: http://dx.doi.org/10.4041/kjod.2015.45.5.268
      

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