What question did this study set out to answer?

To evaluate skeletal and dental changes in Class II division 1 patients treated with Clear Aligners and Rapid Maxillary Expansion, and assess mandibular response post-treatment.

May 18, 2026Orthodontics and Craniofacial Research

Mandibular Response in Class II Division 1 Growing Subjects: Clear Aligners vs. Rapid Maxillary Expansion Therapy. A Controlled Pilot Study

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Authors

DCDe Razza Francesca ChiaraSaint Camillus International University of Health and Medical Sciences LLLugli LetiziaSaint Camillus International University of Health and Medical Sciences GFGazzani FrancescaSaint Camillus International University of Health and Medical Sciences

Discussion

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Implication

Controlled trial evaluates skeletal and dental changes from Clear Aligners versus Rapid Maxillary Expansion in Class II division 1 subjects, suggesting limited impact on mandibular response.

Key Points

To evaluate skeletal and dental changes in Class II division 1 patients treated with Clear Aligners and Rapid Maxillary Expansion, and assess mandibular response post-treatment.
33 mixed dentition subjects with Class II division 1 were recruited and divided into three groups: Clear Aligners, Rapid Maxillary Expansion, and Control.
Panoramic radiographs and lateral cephalograms were taken pre- and post-treatment, with comparison of skeletal changes through the Kruskal–Wallis test.
Treatment duration averaged 15.7 months for the intervention groups.
No significant differences in mandibular response were observed in the sagittal plane among the three groups.
In the vertical plane, the Clear Aligner group showed a significant reduction in SN-GoMe compared to the Control group (p = 0.023) and a trend towards significance compared to the Expansion group (p = 0.067).

Cite This Study

Chiara et al. (2026) studied this question.

synapsesocial.com/papers/6a0aad145ba8ef6d83b70832 https://doi.org/10.1111/ocr.70141

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Implication

Controlled trial evaluates skeletal and dental changes from Clear Aligners versus Rapid Maxillary Expansion in Class II division 1 subjects, suggesting limited impact on mandibular response.

Mandibular Response in Class II Division 1 Growing Subjects: Clear Aligners vs. Rapid Maxillary Expansion Therapy. A Controlled Pilot Study

Discussion

Member takes

Implication

Key Points

Cite This Study

Mandibular Response in Class II Division 1 Growing Subjects: Clear Aligners vs. Rapid Maxillary Expansion Therapy. A Controlled Pilot Study

Discussion

Member takes

Implication

Key Points

Cite This Study

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