In daily life, we encounter countless faces and instinctively form judgments about beauty. But what makes certain faces appear balanced and attractive? At the heart of this lies the anatomical concept of the “midline.” The midline is an imaginary vertical line that divides the face into left and right halves, and its alignment profoundly influences overall facial harmony and impression. Anatomical Significance and Importance of the Facial Midline The facial midline is more than just an imaginary axis—it is a critical anatomical reference formed during embryonic development. From an embryological perspective, the human face is created through the fusion of…