Dr Bristol Full Cheek EggbuttThe mouthpiece of the Dr Bristol has two joints, which means the pressure of the bit is distributed over both the tongue and bars of the mouth. Because the mouthpiece has two joints, it shouldn't cause any interference with the roof of the mouth. The Dr Bristol uses tongue pressure to encourage the horse to go on the bit, the flat shaped lozenge centre piece is set at an angle therefore causing a sharper, more pronounced pressure to the tongue, this