Top anchor retraction with mini-implant use – case report

Vol. 15 – Number 57 – 2022 Case report Page 47-54 Top anchor retraction with mini-implant use – case report Maria Fernanda Carvalho Lopes Silva¹ Márcia Maria de Araújo¹ Diego dos Santos Dias¹ Claudiana Donato Bauman² José Mansano Bauman¹ Teago José Tomaz de Aquino¹ Abstract Biprotrusion is very common in the orthodontic clinic. Most of these patients are treated by extractions of the first premolars with retraction of the anterior arcade, allowing retraction of superior lip and an improvement in aesthetics, facial harmony and function. In these cases, it is important to have an efficiently anchor for posterior teeth, avoiding mesialization. This study aims to report a clinical case of anterosuperior retraction using a mini-implant in a patient with dental biprotusion. Patient, melanoderma, 21 years old, male, facial Pattern I, facial symmetry, convex profile, maxilla, mandible and incisors protrusion, Angle Class I, anterior crowding, and tooth absences 15 and 26. During the planning, we opted for the extraction of the first inferior premolars, alignment and leveling, retraction of anterior teeth in superior and inferior arcade, and the use of mini-implants in the superior posterior right region where it would require absolute anchorage. Among the various forms of anchorage, the use of mini-implant, according to the specialized bibliography, is one of the best options, it leads a quality orthodontic treatment, absolute anchorage in a shorter period of time. In addition, they are small in size which facilitates installation and removal. The force applied is determined by the orthodontist, they receive immediate load, they have a good aesthetics, comfort and they have low cost. Other methods rarely allow maximum anchorage, and usually present difficulties in hygiene, discomfort, and depend on the patients collaboration. Descriptors: Orthodontics, orthodontic anchorage procedures, tooth movement techniques. ¹ Specialization Course in Orthodontics – ABO/Unimontes. ² Department of Physical Education and Sports – Unimontes. DOI: 10.24077/2022;1557-193588