ABSTRACT
El reporte de este caso tiene como objetivo demostrar la utilidad de los anclajes esqueléticos temporarios como son las miniplacas cigomáticas y los microimplantes "buccal shelf" en el tratamiento ortodóncico, en una paciente de 17 años 10 meses de edad, clase II vertical, dólicofacial, con mordida abierta anterior y aumento de la altura facial inferior. Después de la primera fase de tratamiento, siguiendo la secuencia de arcos para completar la alineación, se utilizaron anclajes esqueléticos extrarradiculares con una mecánica de intrusión con fuerzas elásticas durante 10 meses. Se intruyeron sus piezas posteriores superiores e inferiores y se distalizó la arcada superior, corrigiéndose la oclusión. El mentón retrognático y su perfil convexo mejoraron con la autorrotación de la mandíbula (AU)
The objective of this report case is to demonstrate the usefulness of temporary skeletal anchors such as zygomatic miniplates and buccal shelf microimplants in orthodontic treatment, in a 17-year-old 10-month-old, vertical class II, dollicofacial patient with anterior open bite and increased lower facial height. After the first treatment phase, following the arch sequence to complete the alignment, extra-radicular skeletal anchors were used with intrusion mechanics with elastic forces for 10 months. Its upper and lower posterior pieces were intruded and the upper arch was distalized, correcting the occlusion. e retrognathic chin and its convex profile improved with autorotation of the jaw (AU)
Subject(s)
Humans , Male , Adolescent , Open Bite , Orthodontic Anchorage Procedures , Malocclusion, Angle Class II/therapy , Titanium , Tooth Movement Techniques , Biomechanical Phenomena , Dental Implants , BiotypologyABSTRACT
Objective To evaluate the surgical technique of titanium miniplates in reconstruction of laminar roof after a posterior approach in intraspinal tumor surgery. Methods From August, 2007 to March, 2009, 11patients underwent intraspinal tumor surgery with osteotomy and reconstruction of laminar roof, titanium miniplates were used for fixing in the re-implantation. There were 2 intramedullary tumors,9 extramedullary tumors. The target of surgery was the cervical spine in 2 cases, the cervicothoracic spine in 4 cases, the thoracic spine in 2 cases, the thoracolumbar spine in 2 cases, and the lumbar spine in 1 cases. The patitens were followed up for 6 months to 2years. Local pain,bony healing and spinal malformation were assessed. Results In the 11 patients, there was no case of dural, nerve root, or spinal cord injury due to laminar roof reconstruction. One patient complained of moderate to severe local pain during follow-up and 2 patients complained of occasional slight pain at the surgical site. No limitation of activity occurred. Bony healing was confirmed radiologically or CT scan in 9 patients. There were no patients demonstrated a new spinal malalignment, and no patients developed stenosis of the spinal canal. Conclusions The reconstruction of the laminar roof using titanium miniplates will benefit the recovery of normal structure of spine,and maintain the stability of spine,and avoid the occurrence of stenosis of the spinal canal.