ArticleChildren (Basel, Switzerland)2026
Occlusal Relationships and Dental Changes in Mixed Dentition Patients Treated with Clear Aligners: A 2-Year Follow Up.
Article in Children (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThis study assessed the long-term stability of dental arch changes achieved through clear aligner treatment in growing patients during the early mixed dentition stage.
methodsThis retrospective study included 20 patients (mean age 8.3 ± 0.4 years) treated with clear aligners according to a standardized sequential expansion protocol. No additional auxiliaries, interproximal reductions, or retentions were used. Dental casts were collected at baseline (T0), end of treatment (T1), and two years post-treatment without retention (T2). Linear and angular measurements (arch width, molar and incisor torque, Henry's angle, overjet, overbite, and Little's index) were assessed on digital models. Friedman ANOVA and Wilcoxon signed-rank tests were applied (α = 0.05).
resultsAt T1-T0, significant transversal expansion was achieved in both arches (U6-6 mesial +2.1 mm; L6-6 mesial +2.4 mm;
conclusionsClear aligners in early mixed dentition achieved significant and stable dental arch modifications over a 2-year follow-up without the use of retention appliances. This therapeutic approach may represent a reliable interceptive option in growing patients.
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