Mandibular molar space closure with anchorage through mandibular protraction appliance – case report

Vol. 12 – Number 47 – 2019 Case report | Case report Page 135-142 Mandibular molar space closure with anchorage through mandibular protraction appliance – case report Benedito Viana Freitas1 Lara Lenza Gratão2 Izabel Cristina Vieira de Oliveira3 Heloíza Viana Freitas de Melo4 Vandilson Pinheiro Rodrigues5 Pedro César Fernandes dos Santos6 Abstract The aim of this work is to present a clinical case report of lower molar space closure using as anchorage Mandibular Protraction Appliance unilaterally installed. A female patient, 24 years old, reported as main complaint multiple diastemas and the space corresponding to the extracted lower left first molar. She presented Class I malocclusion, straight profile, passive labial sealing, facial symmetry, coincident median lines, gyroversions, diastemas between lateral incisors and canines in the maxillary and mandibular arches, between canines and lower first premolars and space of the extracted lower first molar. It was proposed closure of the space through mesialization of the second and third molars with Bull loop, using the Mandibular Protraction Appliance (MPA) as anchorage of lower anterior teeth. Multiloop Edgewise Archwire (MEAW) technique with 1/8 medium strength intermaxillary elastics were used to correct the side effects caused by unilateral use of MPA. At the end of treatment, all diastemas and the space corresponding to the first lower left molar were closed. The Mandibular Protraction Appliance used unilaterally proved to be effective as an anchor device during space closure of the extracted posterior element. Descriptors: Angle Class I Malocclusion, orthodontic space closure, orthodontic anchorage procedures. ¹ Professor Titular da disciplina de Ortodontia – Universidade Federal do Maranhão. ² Clínica Privada – São Luís/MA. ³ Especialista em Ortodontia, Mestra em Odontologia – UFMA. 4 Especialista em Ortodontia, Mestre em Odontologia – UFMA. 5 Doutor em Odontologia – UFMA, Professor Adjunto I – UFMA. 6 Professor Associado III da disciplina de Ortodontia – Universidade Federal do Ceará.   Dear Subscriber, This article will be available for download in January 2020.