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. 2018 Jul 12;6(3):32. doi: 10.3390/dj6030032

Figure 2.

Figure 2

Estimated and actual treatment durations. * = Actual treatment duration for Aligner group significantly longer than estimated p < 0.005. ** = Actual treatment duration for Aligner + HFA significantly shorter than estimated p < 0.001. # = Actual treatment duration for Aligner + HFA group significantly shorter than Aligner group, p < 0.001.