![Figure 6.](/ServeContent?url=http%3A%2F%2Fdbm.sagepub.com%2Fcontent%2F5%2F1758736014552149%2FF6.medium.gif)
Figure 6.
Tip-back moment created by tongue function on tongue trapping area regarding center of resistance of the appliance.
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Tip-back moment created by tongue function on tongue trapping area regarding center of resistance of the appliance.