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A peculiar accident

Frederick S. McKay
1916 International Journal of Orthodontia  
A Peculiar Accidsat 537 greater than in cases of the positive, first type. This type will be often met in its extreme form in Class II, Division 1, cases. Much of the difficulty of retention of these cases is due to these subnormally functioning facial muscles. In treating this type, only endless patience and double vigilance will avail. Retention can be proved sufficient only by years of care and months of waiting after removing each part, for the whole organization lacks the metabolic and
more » ... e metabolic and functional tone which makes for permanency in orthodontic correction.
doi:10.1016/s1072-3471(16)90125-1 fatcat:zjhiggxnfjcjhoyvtwu5mch5bu