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A 16-year-old boy had bicycle accident. The teeth #8 and 9 were luxated. They were placed back in the sockets in a timely manner and splinted. One month later, the tooth #8 had percussion, while #9 discolored (Fig.1).
Xin Wei, DDS, PhD, MS 1st edition 10/29/2014, last revision 10/29/2014