The monkey hook: an auxiliary for impacted, rotated, and displaced teeth.

been used to direct the eruption of an impacted tooth by applying force to an attachment on the tooth. One such attachment is the versatile “loop-button” or bondable eyelet, a 1mm helix of round wire welded or brazed to a small bondable base. The Monkey Hook* is a simple auxiliary with an open loop on each end for the attachment of intraoral elastics or elastomeric chain, or for connecting to a bondable loop-button (Fig. 1). Its S-shaped design was inspired by the children’s game, “Barrel of Monkeys”,** since more than one Monkey Hook can be linked together to form a chain (Fig. 2). The hook can be closed with a plier to prevent disengagement. A combination of Monkey Hooks and bondable loop-buttons allows the production of a variety of different directional forces to assist in the correction of impacted, rotated, or displaced teeth. Vertical Intermaxillary Eruptive Forces