Title (English)
Short‐Term Changes in the Occlusal Contacts During Anterior Segmental Orthodontic Treatment With Clear Aligners in Adult Patients
Thong tin bai bao / Article info
- Tac gia / Authors: Ji-Hye Song, Ji-Hyun Lee, Sanghee Lee, Kee‐Joon Lee, Jung‐Yul Cha, Chooryung J. Chung, Kyung‐Ho Kim
- Tap chi / Journal: Orthodontics and Craniofacial Research
- Ngay xuat ban / Published: 2026-09-13
- DOI: 10.1111/ocr.70182
- Nguon / Source: OpenAlex
Abstract (English)
ABSTRACT Objective To compare ClinCheck‐predicted and achieved maxillary occlusal contact areas immediately after an initial 14‐aligner anterior segmental sequence without programmed posterior movement. Materials and Methods This retrospective study included 31 adult women treated with 14 maxillary and mandibular clear aligners. Bilateral first premolars through second molars were digitally locked. Predicted stage‐14 models and intraoral scans obtained immediately after aligner 14 and before refinement were assessed at maximum intercuspation. Contact regions at 0.00‐mm clearance were quantified with ImageJ. The primary outcome was the patient‐level total posterior achieved‐minus‐predicted difference. Tooth‐type differences were analysed using patient‐clustered generalized estimating equations with Holm adjustment; bite‐ramp comparisons were exploratory. Results Predicted and achieved total posterior areas were 63.71 ± 36.56 and 30.30 ± 18.26 mm 2 , respectively (mean difference, −33.41 mm 2 ; 95% CI, −44.42 to −22.40; p < 0.001). After Holm adjustment, the achieved central‐incisor area was 0.49 mm 2 greater than predicted ( p = 0.003), whereas areas were smaller at the first premolars, second premolars, first molars, and second molars by 3.09, 5.44, 11.46, and 13.42 mm 2 , respectively (adjusted p ≤ 0.016). Lateral‐incisor and canine differences were not significant. Bite‐ramp groups did not differ significantly. Conclusion After 14 aligners, the achieved posterior contact area was substantially smaller than predicted despite no programmed posterior movement. This early discrepancy supports direct evaluation of posterior contacts before refinement.
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Bai dang tu dong boi plugin Ortho OA Fetcher. Anh (neu co) tu PubMed Central. Noi dung lay tu nguon open access va dich tu dong – chi mang tinh tham khao.
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