Pure Mandibular Incisor Intrusion: A Finite Element Study to Evaluate the Segmented Arch Technique.

Leveling the curve of Spee is a commonly-used strategy to correct deep bites. Although several techniques have been proposed to intrude mandibular incisors (MI), flaring of these teeth is often observed and in many instances undesired. A three-dimensional (3D) finite element model (FEM) was used to locate the ideal point of force application (PFA) to achieve pure MI intrusion with the three-piece arches' technique.

Mandibular Incisor Impaction: A Rare Condition.

The purpose of this case report is to present the management of an impacted permanent mandibular left central incisor using a removable appliance. A minor surgery was done to expose the tooth crown and bond an orthodontic button. The removable appliance was used to apply extrusion forces to the impacted tooth.