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Application of Angular Measurements in the Correction of the Asymmetric Chin

2013; Elsevier BV; Volume: 71; Issue: 7 Linguagem: Inglês

10.1016/j.joms.2012.12.021

1531-5053

Augusto Pary,

Craniofacial Disorders and Treatments

Osseous genioplasty is an important surgical option for the correction of true chin asymmetry or to disguise a mandibular asymmetry when a mandibular ramus osteotomy is not indicated. 1 Freitas CE: Mentoplastia, um importante complemento, não uma solução, in Araújo A (ed): Cirurgia Ortognática. Santos. São Paulo: Santos; 1999, pp 233–274 Google Scholar , 2 Stefanova N. Stella J.P. Geometric considerations when planning an asymmetric genioplasty. Int J Adult Orthod Orthognath Surg. 1999; 14: 175 PubMed Google Scholar , 3 Raffaini M. Sesenna E. Hemi-genioplasty: Technique to correct chin asymmetry. J Oral Maxillofac Surg. 1995; 53: 1362 Abstract Full Text PDF PubMed Scopus (3) Google Scholar , 4 Epker B.N. Stella J.P. Fish L.C. Dentofacial Deformities: Integrated Orthodontic and Surgical Correction (ed 2). Mosby, St Louis1995 Google Scholar , 5 Waite P.D. Urban S.D. Management of facial asymmetry. in: Miloro M. Ghali G.E. Larsen P.E. Waite P.D. Peterson’s Principles of Oral and Maxillofacial Surgery (ed 2). BC Decker, Hamilton, Ontario, Canada2004: 1205-1219 Google Scholar Linear measurements are traditionally obtained in genioplasty planning to guide the amount of surgical repositioning of the chin, especially in cases of chin midline shifts. 1 Freitas CE: Mentoplastia, um importante complemento, não uma solução, in Araújo A (ed): Cirurgia Ortognática. Santos. São Paulo: Santos; 1999, pp 233–274 Google Scholar , 2 Stefanova N. Stella J.P. Geometric considerations when planning an asymmetric genioplasty. Int J Adult Orthod Orthognath Surg. 1999; 14: 175 PubMed Google Scholar , 4 Epker B.N. Stella J.P. Fish L.C. Dentofacial Deformities: Integrated Orthodontic and Surgical Correction (ed 2). Mosby, St Louis1995 Google Scholar However, for asymmetries in which there is a cant of the chin’s inferior border, rotation of the osteotomized bone segment is usually necessary to level it; therefore angular measurements might be preferred over linear measurements to measure the rotational movement accurately. Nevertheless, to date, the importance of angular measurement in genioplasty planning has never been studied.