Figure 4
The percentage of patients with horizontal change in maxillary cephalometric landmark positions after forward movement of the maxilla and rigid fixation. Note that 20% of this group show mild relapse (2–4 mm backward movement of anterior maxillary landmarks), with almost no chance of clinically problematic relapse (>4 mm). Forward movement of mandibular landmarks reflects splint removal and a tendency for the maxilla to move upward if it was moved down as well as advanced.