Abstract
Objectives: The objective of this study was to analyze the divine proportion of lips position related to the overall face. Material and Methods: Normative proportions were sketched in seven patterns of face on milimeter graph paper, where specific anatomical points were determined. No subjects participated in the study. The facial length was segmented into the golden ratio at point Phi (Divine proportion). Specific distances within the minor inferior subsection of the face, involving the lower and upper lips, were studied. The one-sample t-test was used to compare the means to the normative constant. Results: The distance from Phi to the lower lip was 52% of the minor inferior facial section. The means of quotients relating lower and upper lips with point Phi were not statistically different to constant 1.618. Conclusion: The lower lip stands in the midpoint of the minor inferior facial section and the divine proportion was found in the position of lips within the overall face. In a time when much importance is given to lips condition, it is suitable to the orthodontist and general dentists to recognize its natural positions on a regular basis.
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