Functional Unit‐Based Analysis Unveils the Skeletal Mandibular Effects of Class II Elastics Therapy in Adolescents
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Wiley
2026
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| author | Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li |
| author_facet | Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li |
| collection | Wiley Open Access |
| contents | Functional Unit‐Based Analysis Unveils the Skeletal Mandibular Effects of Class II Elastics Therapy in Adolescents Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li Orthodontics & Craniofacial Research ABSTRACT Background This study sought to thoroughly assess the skeletal impacts of Class II elastics therapy on the developing mandible, highlighting three‐dimensional changes in its functional units. Methods Treatment records of 140 CBCT scans from 70 adolescent patients were retrospectively collected and assigned to one of two groups: the Class II elastics group ( n = 35), in which class II elastics were performed on the stainless steel archwires for more than 12 months, and the control group ( n = 35). Pre‐ and post‐treatment cone beam computed tomography (CBCT) images were used to assess changes related to the skeletal facial pattern, functional units, and transverse parameters. An independent t ‐test was used to compare between the two groups. Results In the Class II elastics group, the mandibular body unit length (IAF‐MF) increased by 3.09 ± 3.16 mm from pre‐ to post‐treatment, significantly larger than that in the control group (1.37 ± 3.14 mm). No other mandibular functional unit or transverse parameters demonstrated significant differences between the two groups. Conclusions Based on the single‐center sample included in this study, the adolescent group receiving prolonged Class II elastics may have exhibited a greater increase in mandibular body unit length compared to the group with minimal elastic use. However, these findings cannot be generalized without further validation. 10.1111/ocr.70127 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1111/ocr.70127 |
| format | Artículo Open Access |
| id | wiley_oa_10_1111_ocr_70127 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2026 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Functional Unit‐Based Analysis Unveils the Skeletal Mandibular Effects of Class II Elastics Therapy in Adolescents Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li Orthodontics & Craniofacial Research Functional Unit‐Based Analysis Unveils the Skeletal Mandibular Effects of Class II Elastics Therapy in Adolescents Ehab A. Abdulghani Li Mei Abeer A. Al‐Sosowa Shijia Li Majedh Abdo Ali Al‐Somairi Maged S. Alhammadi Jianru Yi Yu Li Orthodontics & Craniofacial Research ABSTRACT Background This study sought to thoroughly assess the skeletal impacts of Class II elastics therapy on the developing mandible, highlighting three‐dimensional changes in its functional units. Methods Treatment records of 140 CBCT scans from 70 adolescent patients were retrospectively collected and assigned to one of two groups: the Class II elastics group ( n = 35), in which class II elastics were performed on the stainless steel archwires for more than 12 months, and the control group ( n = 35). Pre‐ and post‐treatment cone beam computed tomography (CBCT) images were used to assess changes related to the skeletal facial pattern, functional units, and transverse parameters. An independent t ‐test was used to compare between the two groups. Results In the Class II elastics group, the mandibular body unit length (IAF‐MF) increased by 3.09 ± 3.16 mm from pre‐ to post‐treatment, significantly larger than that in the control group (1.37 ± 3.14 mm). No other mandibular functional unit or transverse parameters demonstrated significant differences between the two groups. Conclusions Based on the single‐center sample included in this study, the adolescent group receiving prolonged Class II elastics may have exhibited a greater increase in mandibular body unit length compared to the group with minimal elastic use. However, these findings cannot be generalized without further validation. 10.1111/ocr.70127 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Functional Unit‐Based Analysis Unveils the Skeletal Mandibular Effects of Class II Elastics Therapy in Adolescents |
| topic | Orthodontics & Craniofacial Research |
| url | https://onlinelibrary.wiley.com/doi/10.1111/ocr.70127 |