Orthodontic rod-based aligner

An orthodontic rod-based aligner is a fixed dental appliance designed to correct jaw misalignments such as overbites by applying controlled force to guide mandibular growth. It consists of one or more metal rods, often called pistons or tubes, which are bonded to the upper and lower teeth using bands or brackets and include a hinge mechanism that permits controlled jaw movement during function.

This category of device is intended for single-patient use over the course of orthodontic treatment and is discarded after treatment completion. Devices in this category are regulated as custom-made or patient-specific orthodontic appliances and are supplied directly to dental professionals for clinical use, without medicated components or reusable design.