Nonextraction treatment of a skeletal Class III malocclusion. 2009

Vladimir León-Salazar, and Guilherme Janson, and Marcos Roberto de Freitas, and Renato Rodrigues de Almeida, and Rubén León-Salazar
Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, Brazil. licusperu@hotmail.com

This case report describes the nonsurgical, nonextraction therapy of a 16-year-old boy with a skeletal Class III malocclusion, a prognathic mandible, and a retrusive maxilla. He was initially classified as needing orthognathic surgery, but he and his parents wanted to avoid that. The Class III malocclusion was corrected with a rapid palatal expander and a maxillary protraction mask followed by nonextraction orthodontic treatment with fixed appliances, combined with short Class III and vertical elastics in the anterior area. The height of the maxillary alveolar process and the vertical face height were slightly increased with treatment. Class I molar and canine relationships were achieved, and the facial profile improved substantially.

UI MeSH Term Description Entries
D008297 Male Males
D008313 Malocclusion, Angle Class III Malocclusion in which the mandible is anterior to the maxilla as reflected by the first relationship of the first permanent molar (mesioclusion). Angle Class III,Habsburg Jaw,Hapsburg Jaw,Prognathism, Mandibular,Underbite
D008437 Maxilla One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS. Maxillae,Maxillary Bone,Bone, Maxillary,Bones, Maxillary,Maxillary Bones,Maxillas
D009971 Orthodontics, Corrective The phase of orthodontics concerned with the correction of malocclusion with proper appliances and prevention of its sequelae (Jablonski's Illus. Dictionary of Dentistry). Corrective Orthodontics
D010155 Palatal Expansion Technique An orthodontic method used for correcting narrow or collapsed maxillary arches and functional cross-bite. (From Jablonski's Dictionary of Dentistry), Maxillary Expansion,Palatal Expansion Technic,Expansion, Maxillary,Palatal Expansion Technics,Palatal Expansion Techniques,Technic, Palatal Expansion,Technique, Palatal Expansion
D011378 Prognathism A condition marked by abnormal protrusion of the mandible. (Dorland, 27th ed) Prognathisms
D005115 Extraoral Traction Appliances Extraoral devices for applying force to the dentition in order to avoid some of the problems in anchorage control met with in intermaxillary traction and to apply force in directions not otherwise possible. Chincap, Orthodontic,Face Bow, Orthodontic,Headgear, Orthodontic,Appliance, Extraoral Traction,Appliances, Extraoral Traction,Bow, Orthodontic Face,Bows, Orthodontic Face,Chincaps, Orthodontic,Extraoral Traction Appliance,Face Bows, Orthodontic,Headgears, Orthodontic,Orthodontic Chincap,Orthodontic Chincaps,Orthodontic Face Bow,Orthodontic Face Bows,Orthodontic Headgear,Orthodontic Headgears,Traction Appliance, Extraoral,Traction Appliances, Extraoral
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D014716 Vertical Dimension The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250) Mandibular Rest Position,Rest Vertical Dimension,Vertical Dimension at Rest,Vertical Dimension of Occlusion,Dimension, Rest Vertical,Dimension, Vertical,Dimensions, Rest Vertical,Dimensions, Vertical,Mandibular Rest Positions,Occlusion Vertical Dimension,Occlusion Vertical Dimensions,Position, Mandibular Rest,Positions, Mandibular Rest,Rest Position, Mandibular,Rest Positions, Mandibular,Rest Vertical Dimensions,Vertical Dimension, Rest,Vertical Dimensions,Vertical Dimensions, Rest

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