TRANSPALATAL ARCH (TPA)

Stabilizes molar position by preventing molar extrusion.

NANCE HOLDING ARCH

Prevents arch loss by stabilizing and preventing molars from drifting forward.

LOWER LINGUAL HOLDING ARCH

Prevents molars from tipping and maintains arch length.

SPACE MAINTAINER

AKA BAND + LOOP

Prevents movement and maintains space. Commonly used to hold the space of an extracted or unerupted tooth.

SPACE REGAINER

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Used to regain space after tooth loss.