Stability of transverse changes with clear aligners and hyrax expanders from the mixed to the permanent dentition

Key Points

• To evaluate the stability of transverse changes in the maxillary and mandibular arches during the transition from mixed to permanent dentition.
• Comparison of maxillary arch expansion from clear aligners (IFS) and hyrax expanders.
• Assessment of mandibular arch changes and their stability over time.
• Evaluation of longitudinal effects on dental structure.
• Both IFS and hyrax produced consistent maxillary arch expansion throughout the transition period.
• IFS also resulted in stable mandibular arch expansion, indicating its effectiveness for mild crowding.
• No long-term vertical effects were noted with the use of IFS.