A Beautiful Smile Aesthetics, Function and Natural Harmony A beautiful smile is not just a matter of straight teeth. It is the result of a balance between the proportions of the teeth, the function of the bite, the position of the lips and the dynamics of the face. This is precisely why modern orthodontics does not strive to create “perfectly identical” smiles, but rather a natural harmony that gives each face its best version. Below are 10 key rules for a beautiful and natural …