Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report

Gözde Gür; Hatice Gökalp

doi:10.61139/ijdor.1869025

Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report

Abstract

The mixed dentition stage provides a valuable opportunity for early orthopedic intervention in Class III malocclusion. The quad helix appliance, combined with a chin cup, may be used for maxillary expansion and sagittal control of mandibular growth during the early growth period. The purpose of this case report is to present the early treatment of a Class III malocclusion primarily associated with mandibular prognathism and transverse maxillary deficiency using a quad helix–chin cup combination. A 9-year-10-month-old girl presenting with Class III malocclusion, anterior crossbite, transverse maxillary deficiency, and a concave profile was treated with a quad helix appliance and chin cup therapy. The bite was raised with a mandibular acrylic plate to eliminate occlusal interferences, allowing maxillary expansion. Mandibular growth was controlled with a chin cup. After 25 months of treatment, positive overjet and overbite, improvement in the ANB angle, and a more balanced soft tissue profile were achieved. In prepubertal patients, particularly when cooperation is limited, a quad helix appliance that does not depend on patient compliance, combined with chin cup therapy, may contribute to favorable skeletal and dentoalveolar outcomes. However, the findings of this case report should be interpreted within the limitations inherent to single-case observations.

Keywords

References

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Details

Primary Language

English

Subjects

Orthodontics and Dentofacial Orthopaedics

Journal Section

Case Report

Authors

Gözde Gür ^*
0000-0002-4133-5355
Türkiye

Hatice Gökalp
0000-0002-0795-5323
Türkiye

Early Pub Date

April 30, 2026

Publication Date

April 30, 2026

Submission Date

January 21, 2026

Acceptance Date

February 26, 2026

Published in Issue

Year 2026 Volume: 6 Number: 1

DOI

https://doi.org/10.61139/ijdor.1869025

IZ

https://izlik.org/JA34RU26HT

Cite

RIS / Bibtex

APA

Gür, G., & Gökalp, H. (2026). Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report. HRU International Journal of Dentistry and Oral Research, 6(1), 62-66. https://doi.org/10.61139/ijdor.1869025

AMA

1.Gür G, Gökalp H. Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report. HRU Int J Dent Oral Res. 2026;6(1):62-66. doi:10.61139/ijdor.1869025

Chicago

Gür, Gözde, and Hatice Gökalp. 2026. “Treatment of A Class III Patient With Quad Helix Appliance and Chin Cup: A Case Report”. HRU International Journal of Dentistry and Oral Research 6 (1): 62-66. https://doi.org/10.61139/ijdor.1869025.

EndNote

Gür G, Gökalp H (April 1, 2026) Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report. HRU International Journal of Dentistry and Oral Research 6 1 62–66.

IEEE

[1]G. Gür and H. Gökalp, “Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report”, HRU Int J Dent Oral Res, vol. 6, no. 1, pp. 62–66, Apr. 2026, doi: 10.61139/ijdor.1869025.

ISNAD

Gür, Gözde - Gökalp, Hatice. “Treatment of A Class III Patient With Quad Helix Appliance and Chin Cup: A Case Report”. HRU International Journal of Dentistry and Oral Research 6/1 (April 1, 2026): 62-66. https://doi.org/10.61139/ijdor.1869025.

JAMA

1.Gür G, Gökalp H. Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report. HRU Int J Dent Oral Res. 2026;6:62–66.

MLA

Gür, Gözde, and Hatice Gökalp. “Treatment of A Class III Patient With Quad Helix Appliance and Chin Cup: A Case Report”. HRU International Journal of Dentistry and Oral Research, vol. 6, no. 1, Apr. 2026, pp. 62-66, doi:10.61139/ijdor.1869025.

Vancouver

1.Gözde Gür, Hatice Gökalp. Treatment of A Class III Patient with Quad Helix Appliance and Chin Cup: A Case Report. HRU Int J Dent Oral Res. 2026 Apr. 1;6(1):62-6. doi:10.61139/ijdor.1869025