Angle Class III malocclusion with anteroposterior and vertical discrepancy in the final stage of growth

Abstract

Angle Class III malocclusion is characterized by an anteroposterior dental discrepancy with or without anteroposterior and vertical skeletal changes. Patients usually seek orthodontic treatment because facial appearance is compromised in most cases. The present study describes the clinical case of a 12-year and 6-month-old girl in her final stage of pubertal growth presenting Class III malocclusion with anteroposterior and vertical discrepancies. Initial treatment consisted of maxillary expansion using a Hass expander followed by the use of a Petit facemask for a minimum of 16 hours a day. During corrective treatment, Class III elastics were used to complement protraction. At the end of the treatment, skeletal discrepancy had improved, and the ANB angle increased from 0 to 2o. Angle Class III malocclusion, anterior crossbite and open bite were corrected. This case was presented to the Committee of the Brazilian Board of Orthodontics and Facial Orthopedics (BBO) as part of the requisites to become a BBO Diplomate.

Comparative Assessment of Maxillofacial Morphology in Patients with Bilateral Cleft Lip and Palate using Cone Beam Computed Tomography

“…The required anatomical landmarks were identified then the required angle was measured using angle tool ( Figure 2). ANB indicates whether the skeletal relationship between the maxilla and the mandible is a normal skeletal class I, a skeletal Class II, or a skeletal class III relationship (18) .…”

EL Tratamiento temprano de pseudo clase III con Arco de Eschler. Reporte de caso.

“…Se han desarrollado varios aparatos ortopédicos para la corrección de una clase III. En el presente caso clínico se utilizó el arco de Eschler, con rejilla lingual, es un arco de gran utilidad para el control de los incisivos inferiores, se usa junto con una placa superior, lo cual permite posicionarlos adecuadamente en relación con los incisivos superiores, logrando cambios en la posición de la mandíbula en un periodo de tiempo corto 12,13 . El objetivo del presente caso clínico fue demostrar la efectividad de la intervención temprana en la corrección de una mordida cruzada anterior, para poder evitar consecuencias desfavorables a través del crecimiento y lograr una adecuada estabilidad oclusal y esquelética.…”