Renkema, Anne Marie; Fudalej, Piotr; Renkema, Alianne; Bronkhorst, Ewald; Katsaros, Christos (2013). Gingival recessions and the change of inclination of mandibular incisors during orthodontic treatment. European journal of orthodontics, 35(2), pp. 249-55. Oxford University Press 10.1093/ejo/cjs045
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SUMMARY A recent systematic review demonstrated that, overall, orthodontic treatment might result in a small worsening of periodontal status. The aim of this retrospective study was to test the hypothesis that a change of mandibular incisor inclination promotes development of labial gingival recessions. One hundred and seventy-nine subjects who met the following inclusion criteria were selected: age 11-14 years at start of orthodontic treatment (TS), bonded retainer placed immediately after treatment (T₀), dental casts and lateral cephalograms available pre-treatment (TS), post-treatment (T₀), 2 years post-treatment (T₂), and 5 years post-treatment (T₅). Depending on the change of lower incisor inclination during treatment (ΔInc_Incl), the sample was divided into three groups: Retro (N = 34; ΔInc_Incl ≤ -1 degree), Stable (N = 22; ΔInc_Incl > -1 degree and ≤1 degree), and Pro (N = 123; ΔInc_Incl > 1 degree). Clinical crown heights of mandibular incisors and the presence of gingival recessions in this region were assessed on plaster models. Fisher's exact tests, one-way analysis of variance, and regression models were used for analysis of inter-group differences. The mean increase of clinical crown heights (T₀ to T₅) of mandibular incisors ranged from 0.6 to 0.91 mm in the Retro, Stable, and Pro groups, respectively; the difference was not significant (P = 0.534). At T₅, gingival recessions were present in 8.8, 4.5, and 16.3 per cent patients from the Retro, Stable, and Pro groups, respectively. The difference was not significant (P = 0.265). The change of lower incisors inclination during treatment did not affect development of labial gingival recessions in this patient group.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics |
UniBE Contributor: |
Fudalej, Piotr, Katsaros, Christos |
Subjects: |
600 Technology > 610 Medicine & health |
ISSN: |
0141-5387 |
Publisher: |
Oxford University Press |
Language: |
English |
Submitter: |
Eveline Carmen Schuler |
Date Deposited: |
11 Feb 2014 11:38 |
Last Modified: |
05 Dec 2022 14:27 |
Publisher DOI: |
10.1093/ejo/cjs045 |
PubMed ID: |
22828081 |
BORIS DOI: |
10.7892/boris.39988 |
URI: |
https://boris.unibe.ch/id/eprint/39988 |
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