Nonextraction treatment of severe Class III malocclusion with anterior maxillary protrusion using temporary skeletal anchorage devices

초록

In this case report, we describe the successful nonsurgical and nonextraction treatment of a patient with severe Class III malocclusion and upper lip protrusion. An 18-year-old female presented with protrusive upper and lower lips, skeletal Class III malocclusion (ANB, −0.3°; Wits, −7.0 mm), and maxillary anterior proclination (U1-FH, 123.1°). A ramal plate and modified C-palatal plate were introduced as treatment options for Class III malocclusion and maxillary molar distalization, respectively, followed by retraction of the upper lip protrusion. Using the ramal plate, the mandibular molars achieved 5.0 mm distalization, effectively correcting severe Class III malocclusion without surgical intervention. In addition, with a modified C-palatal plate, the maxillary molars achieved 2.0 mm distalization, and the anterior teeth were retracted without the need for premolar extractions. © 2025 American Association of Orthodontists