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Contains a higher dose of vitamin D3 & K2 which is absorbed through facial tissue
never becomes soft
had to break down hard materials and then chew on them for long periods
with an equal number of pieces on each side of your mouth on the molars
Stronger Gum uses xylitol as its main sweetener
Extra Tough: Lightly Flavored Sugar Free, 90 Pieces (315g) - Hard gum | Optimal Shore Rigidity for Jaw Growth Contains a higher dose ofStronger Gum is used in Dr. Mike Mew's clinic, the leading doctor in craniofacial orthotropics. Your browser does not support our video. The Right Combination of Hardness & Toughness Hard and tough are not the same thing. Stronger Gum uses the right combination of hard and tough materials to activate the jaw muscles maximally. Jaw muscles respond best when they are worked out for at least 15 30 minutes at a time. Stronger Gum Extra Tough Hardest
