Anatomic harmony means that all the interrelated parts of the masticatory system (the muscles, joints, and teeth needed for chewing) must be in structural equilibrium. This requires harmony of form:
- Between the condyle, the disk, and the musculature, and the teeth
- Between anterior (front) teeth, the lips, and the tongue
- Between posterior (back) teeth, the lips, and the tongue
- Between the lower teeth and the upper teeth.
- Between the teeth and the face.