Clinical evaluation for chin augmentation: literature review and algorithm proposal.

[INTRODUCTION] The esthetic balance of the face results from harmonic and symmetrical facial proportions. The literature describes several methods for lower-third facial analysis, but lacks a simple and practical method.

[OBJECTIVE] To review the methods of analysis of the ideal projections of the chin based on soft tissues, showing the advantages and disadvantages of each.

[METHODS] Literature review through the PubMed database.

[RESULTS] The following methods for chin analysis based on soft tissues were reviewed: Gonzalles-Ulloa, Goode, Merrifield, Silver, Legan, Gibson & Calhoun, cervicomentual angle, and mentocervical angle.

[CONCLUSION] An adequate analysis of the proportions of the face and facial disharmony is essential for the correct indication of the necessary procedures and good surgical outcome. The authors propose an algorithm to facilitate the indication for chin augmentation surgery.