Klammt’s functional orthopedic appliance modification in the interception of Class II / division 1 malocclusion

Vol. 13 – Number 51 – 2020 Case report Page 66-74 Klammt’s functional orthopedic appliance modification in the interception of Class II / division 1 malocclusion Aristeu Corrêa de Bittencourt Neto1 Gil Guilherme Gasparello2 Giovani Ceron Hartmann3 Itamar Antonio Taffarel4 Orlando Tanaka5 Abstract The Class II, Division 1 malocclusions are a common challenge in orthodontics, and there is controversy between interception at an early age or performing single-stage treatment in adolescence. The aim of this study is to present a case report of a skeletal Class I, Class II, Division 1 malocclusion, overjet 9,0 mm, overbite with maxillary incisors totally covering the lower incisors. The interceptive orthodontics was performed with the aid of Klammt’s elastic open activator for 16 months. The results were reduction of overjet and overbite due to a true mandibular response. The maintenance of a forward positioning of the mandible was observed after 4 years and 11 months in the follow-up examination without the use of any type of appliance. Descriptors: Interception, Classe II, Klammt, AOF. 1 Specialist in Orthodontics – UEL, Master in Dentistry – Orthodontics Uningá. 2 Master’s student in Dentistry – Orthodontics – PUCPR. 3 PhD students in Dentistry – Orthodontics – PUCPR – School of Life Sciences, Master in Dentistry and Dental Materials – UNIOESTE. 4 Master’s student in Dentistry – Orthodontics – PUCPR – School of Life Sciences, Specialist in Orthodontics – ABO – Cascavel. 5 Full Professor – Graduation and Post-Graduation in Dentistry – Orthodontics – PUCPR – School of Life Sciences, Graduate – Brazilian Board of Orthodontics and Facial Orthopedics,  Postdoctoral.