Alveolar bone response to maxillary incisor retraction using stable skeletal structures as a reference.

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Abstrakt

Tytuł:: Alveolar bone response to maxillary incisor retraction using stable skeletal structures as a reference.
Autorzy:: Eksriwong T
Thongudomporn U
Źródło:: The Angle orthodontist [Angle Orthod] 2021 Jan 01; Vol. 91 (1), pp. 30-35.
Typ publikacji:: Journal Article; Research Support, Non-U.S. Gov't
Język:: English
Imprint Name(s):: Original Publication: Appleton, Wis. [etc.] Edward H. Angle Society of Orthodontia.
MeSH Terms:: Incisor*/diagnostic imaging
Maxilla*/diagnostic imaging
Adult ; Cone-Beam Computed Tomography ; Humans ; Palate ; Tooth Movement Techniques ; Young Adult
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Contributed Indexing:: Keywords: Alveolar bone change; Cone-beam computed tomography (CBCT); Maxillary incisor retraction
Entry Date(s):: Date Created: 20201208 Date Completed: 20210201 Latest Revision: 20210428
Update Code:: 20240104
PubMed Central ID:: PMC8032288
DOI:: 10.2319/022920-146.1
PMID:: 33289780
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Objectives: To evaluate alveolar bone change in relation to root position change after maxillary incisor retraction via cone-beam computed tomography (CBCT) using stable skeletal structures as a reference.
Materials and Methods: A total of 17 subjects (age 24.7 ± 4.4 years) who required retraction of the maxillary incisors were included. Labial and palatal alveolar bone changes and root change were assessed from preretraction and 3 months postretraction CBCT images. The reference planes were based on stable skeletal structures. The Kruskal-Wallis test and Wilcoxon signed-rank test were used to compare changes within and between groups, as appropriate. Spearman rank correlations were used to identify the parameters that correlated with alveolar bone change. The significance level was set at .05.
Results: The labial alveolar bone change after maxillary incisor retraction was statistically significant (P < .05), and the bone remodeling/tooth movement (B/T) ratio was 1:1. However, the palatal bone remained unchanged (P > .05). The change in inclination was significantly related to labial alveolar bone change.
Conclusions: Using stable skeletal structures as a reference, the change in labial alveolar bone followed tooth movement in an almost 1:1 B/T ratio. Palatal alveolar bone did not remodel following maxillary incisor retraction. The change in inclination was associated with alveolar bone change.
(© 2021 by The EH Angle Education and Research Foundation, Inc.)

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