Effect of jaw orthopedics in Class II malocclusion on palatal morphology, airways, skeletal features and oral function [Abstract]

Spalj, Stjepan, Cukaj Ademi, Hana, Zhurov, Alexei ORCID: https://orcid.org/0000-0002-5594-0740, Ovsenik, Maja and Palomo, Martin 2025. Effect of jaw orthopedics in Class II malocclusion on palatal morphology, airways, skeletal features and oral function [Abstract]. Presented at: 10th International Orthodontic Congress, Rio De Janeiro, Brazil, October 22-25 2025. Journal of the World Federation of Orthodontists. , vol.14 (6) Elsevier, pp. 568-569. 10.1016/j.ejwf.2025.07.531

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Abstract

Abstract Background Orthodontic treatment before and during puberty employs various techniques to modify craniofacial structures in the management of malocclusions, particularly maxillary expansion and mandibular advancement, which can influence oral function. Objectives To analyze the relationship between oral function and clinical effects of dentofacial orthopedics in deficient mandibles with procumbent maxillary incisors during puberty. Methods Sixty-three participants (median age 12 years; 38% females) were treated with Sander Bite Jumping Appliance (BJA; N=34) and Twin Block (TB; N=29). The growth effect was monitored by comparison to untreated class II cases. Palatal scans and cephalograms were analyzed before and after treatment, at a one-year interval. Both children and their parents reported oral symptoms (OS) and functional limitations (FL). Results Palatal volume, palatal surface area, and palatal projection area increased in both appliance groups compared to the untreated group (p<0.001), but not significantly airways. No difference was observed between the BJA and TB groups. Treated groups compared to untreated had an increase in mandibular length and overjet reduction (p<0.05), but not in facial height. When both appliances were analyzed together, treatment led to a decrease in FL from the parent's perspective (p<0.05). A separate analysis revealed only a reduction in FL from the parental perspective in the TB group (p<0.05), but no significant changes in the BJA group. No associations were found between changes in palatal morphology, airways, and oral function. Conclusion Treatment with both appliances promoted mandibular growth and increased oral space. Children did not relate the changes in orofacial features to oral function.

Item Type:	Conference or Workshop Item - published (Other)
Date Type:	Publication
Status:	Published
Schools:	Schools > Dentistry
Publisher:	Elsevier
ISSN:	2212-4438
Last Modified:	16 Jan 2026 11:45
URI:	https://orca.cardiff.ac.uk/id/eprint/183955

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