Influence of lip protrusion and thickness on the perception of facial profile attractiveness among subjects with different ethnic backgrounds

Ricketts norms for the most favorable lip position to E-line need to be updated. Middle Eastern and Europeans regarded lips positioned + 1 mm to the norm in relation to E-line as the most attractive. Thick lips that were mildly protruded were preferred by Africans. Far Eastern participants preferred normal thickness and thin lips that were protrusive; thick lips were ranked lowest. Among the thick lips, protrusive lips were ranked higher. More personalized and culturally sensitive orthodontic treatment planning is needed to help patients achieve their desired facial esthetic outcome.