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Predictors of surgical‐orthodontic treatment duration of unilateral impacted maxillary central incisors
Author(s) -
Ho KH,
Liao YF
Publication year - 2011
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/j.1601-6343.2011.01516.x
Subject(s) - medicine , maxillary central incisor , dentistry , crown (dentistry) , orthodontics , incisor , retrospective cohort study , surgery
To cite this article:
Ho KH, Liao YF:
Predictors of surgical‐orthodontic treatment duration of unilateral impacted maxillary central incisors
Orthod Craniofac Res 2011; 14 :175–180 Structured Abstract Authors – Ho KH, Liao YF Objectives – To determine independent predictors of duration of surgical‐orthodontic treatment of impacted maxillary central incisors. Setting and Sample Population – The Department of Dentistry at Show Chwan Hospital, Changhua, Taiwan. Eighty patients with unilateral osseous impacted maxillary central incisors receiving a surgical‐orthodontic treatment. Material and Methods – This is a retrospective observational study. Treatment duration and its predictors were abstracted from the patients’ charts and pre‐treatment cephalometric radiographs. Predictors included demographics, crown angle, crown height, crown depth, and root dilacerations. Results – The mean age of the cohort was 9.2 ± 2.3 years (6.4–20.6 years), and 60% were women. The mean orthodontic traction time was 8.0 ± 4.5 months (2.0–24.1 months). Using multiple linear regression analysis, the independent predictors of treatment duration for an impacted maxillary central incisor were age (β = 0.9, p < 0.001), crown height (β = −0.2, p < 0.05), and root dilacerations (β = 3.8, p < 0.001). Conclusions – Duration of surgical‐orthodontic treatment of an impacted maxillary central incisor varied widely. Predictors of longer treatment time were older age, high impacted tooth, and dilacerated incisors.