: This involves the "macro-esthetics" of facial symmetry and the "micro-esthetics" of individual tooth proportions. Modern treatment starts with the face, ensuring that tooth movements enhance overall facial balance rather than just aligning a bite.

Clinicians use specific guidelines to design a "perfect" smile:

In modern orthodontics, creating a beautiful smile is more than just straightening teeth; it is a careful balance of and rigorous physics . While esthetics focuses on how a smile complements the face, biomechanics is the invisible engine that makes those changes possible. 1. Defining the Balance