ArticleClinical oral investigations2026
Early orthodontic traction does not compromise root development in inversely impacted maxillary central incisors: a three-year cone-beam computed tomography evaluation.
Article in Clinical oral investigations, 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
objectivesTo evaluate whether early orthodontic traction of inversely impacted maxillary central incisors with curved roots affects subsequent root development and labial/palatal alveolar bone support. MATERIALS AND
methodsA retrospective cone-beam computed tomography (CBCT)-based study was conducted in 42 children (7-9 years) with unilateral inversely impacted maxillary central incisors at Nolla stages 6-7 who underwent early orthodontic traction after space creation with a 2 × 4 appliance. Contralateral erupted incisors served as intra-individual controls. CBCT was performed pre-operatively, immediately after traction, and 3 years later.
resultsAll 42 incisors were successfully tractioned and aligned into the dental arch. Straight-line root length of tractioned incisors remained shorter than that of contralateral controls at all time points (all p < 0.001) but increased significantly from baseline to post-traction and to 3-year follow-up (all p < 0.001). Curved root length was initially shorter in the affected teeth (p < 0.001) but did not differ from controls at 3 years (p = 0.466). Labial alveolar bone resorption was greater immediately after traction (p < 0.001), yet no significant difference was observed at 3 years (p = 0.070). Palatal bone levels did not differ between groups at either time point (both p > 0.05).
conclusionsEarly traction of inversely impacted maxillary central incisors with curved roots does not impair root development or long-term labial or palatal alveolar bone support. CLINICAL RELEVANCE: Early orthodontic traction of inversely impacted maxillary central incisors can facilitate timely eruption and esthetic rehabilitation without compromising root maturation or long-term periodontal support.
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