Fig.13 (CBCT 3-D image before root canal therapy): A mini-implant will be placed between the teeth #27 and 28 (pink circle), whereas a lingual button on #6 crown as high as possible (red circle).  An elastic or power chain (purple) will be placed between them.

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Xin Wei, DDS, PhD, MS 1st edition 09/24/2013, last revision 09/24/2013