Bone Remodeling during Orthodontic Movement of Lower Incisors—Narrative Review

Edyta Kalina, Anna Grzebyta () and Małgorzata Zadurska
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Edyta Kalina: Department of Orthodontics, Medical University of Warsaw, Stanislawa Binieckiego 6, 02-097 Warsaw, Poland
Anna Grzebyta: Department of Orthodontics, Medical University of Warsaw, Stanislawa Binieckiego 6, 02-097 Warsaw, Poland
Małgorzata Zadurska: Department of Orthodontics, Medical University of Warsaw, Stanislawa Binieckiego 6, 02-097 Warsaw, Poland

IJERPH, 2022, vol. 19, issue 22, 1-12

Abstract: The tooth movement in the alveolus is possible due to bone remodeling. This process could be the risk factor for the formation of gingival recessions—the most common side effects of orthodontic therapy. Gingival recessions are found 5.8–11.5% more frequently among the orthodontically treated patients. What is more, anterior mandibular teeth are the ones most prone to gingival recession dehiscences and fenestrations. The aim of this narrative review was to evaluate, based on CBCT (Cone beam computed tomography) scans, the changes in the alveolar bone of lower incisors in adolescent and adult patients after orthodontic tooth movements. From the pool of 108 publications, a total of 15 fulfilled the criteria of this review. Both retrospective and prospective longitudinal studies—using CBCT or CT (Computed Topography) and evaluating alveolar bone changes in mandibular incisors during orthodontic treatment performed before and after teeth movement—were included. In the group of growing patients, either proclination or retroclination of mandibular incisors led to increase of the distance from CEJ (cementoenamel junction) to marginal bone crest. The difference in bone loss was greater on the lingual side of the incisors in both types of tooth movement. The results were similar for adults patients. The thickness of the alveolar bone was reduced after proclination (total bone thickness) among growing and non-growing patients and retraction (lingual and buccal) of lower anterior teeth in the group of growing patients. The only improvement was measured for buccal thickness of mandibular incisor in bimaxillary protrusion patients treated with extraction therapy. The control of retraction movement (more root than crown movement) enhanced preservation on bone height and thickness. In order to minimize possible deterioration and place teeth in the center of alveolus, CBCT monitoring and scrupulous clinical evaluation are recommended.

Keywords: bone remodeling; incisor inclination; orthodontic treatment; gingival recession; bone fenestration; bone dehiscence (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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