Point of View Column – How to unimpact the permanent upper first molar with ectopic eruption?

Vol. 12 – Number 47 – 2019 Point of View Column Page 41-45 How to unimpact the permanent upper first molar with ectopic eruption? Elisa Souza Camargo¹ Laís Cristina Giacobbo² Cláudia Schappo² Neblyssa Agatha Schneider² Thais Munhoz Pereira² Layza Oppitz² Odilon Guariza Filho¹ Introduction The first permanent molars are the teeth most often affected by ectopic eruption. 7 This condition is commonly associated with the positioning and/or trajectory of abnormal eruptions,5 which can be caused by increased first permanent molar crown half-distal diameter, expressive direction of the eruption half-strong, poor maxillary growth, especially in the jawbone,2 and genetic predisposition. The first permanent molar methicangulated eruption, together with infraocclusion, may result in impaction on the deciduous second molars, making them susceptible to pathological resorption, with greater risk of early loss¹. Ectopic eruption can be classified into two types: reversible, spontaneously corrected; and irreversible,8 in which an intervention is necessary,4 since the permanent molar is retained in the distal portion of the deciduous molar. Thus, the proper clinical control of this condition combined with prior analysis of panoramic and periapical radiographs are essential for the diagnosis and planning of interception orthodontic treatment. The technique with brass wire insertion and activation between the 2nd molar and the permenant 1st molar6 is the most commonly recommended. Therefore, this “Point of view” aims to present 3 clinical cases in which a specific biomechanics was used with a removable spring appliance (Figures 1-3 – cases intercepted by Dr. Elisa Souza Camargo). ¹ Professor – Postgraduate Program in Orthodontics – PUCPR – School of Life Sciences. ² Postgraduate Orthodontics – PUCPR – School of Life Sciences. Dear Subscriber, This article will be available for download in January 2020.