Journal Article

Gingival labial recessions and the post-treatment proclination of mandibular incisors

Anne-Marie Renkema, Zuzanna Navratilova, Katerina Mazurova, Christos Katsaros and Piotr S. Fudalej

in European Journal of Orthodontics

Published on behalf of European Orthodontic Society

Volume 37, issue 5, pages 508-513
Published in print October 2015 | ISSN: 0141-5387
Published online December 2014 | e-ISSN: 1460-2210 | DOI: https://dx.doi.org/10.1093/ejo/cju073
Gingival labial recessions and the post-treatment proclination of mandibular incisors

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Summary

Introduction:

A prerequisite for development of gingival recession is the presence of alveolar bone dehiscence. Proclination of mandibular incisors can result in thinning of the alveolus and dehiscence formation.

Objective:

To assess an association between proclination of mandibular incisor and development of gingival recession.

Methods:

One hundred and seventeen subjects who met the following inclusion criteria were selected: 1. age 11–14 years at start of orthodontic treatment (TS), 2. bonded retainer placed immediately after treatment (T0), 3. dental casts and lateral cephalograms available pre-treatment (TS), post-treatment (T0), and 5 years post-treatment (T5), and 4. post-treatment (T0) lower incisor inclination (Inc_Incl) <95° or >100.5°. Two groups were formed: non-proclined (N = 57; mean Inc_Incl = 90.8°) and proclined (N = 60; mean Inc_Incl = 105.2°). Clinical crown heights of mandibular incisors and the presence of gingival recession sites in this region were assessed on plaster models. Fisher’s exact tests, t-tests, and regression models were computed for analysis of inter-group differences.

Results:

The mean increase of clinical crown heights (from T0 to T5) of mandibular incisors ranged from 0.75 to 0.83mm in the non-proclined and proclined groups, respectively (P = 0.273). At T5, gingival recession sites were present in 12.3% and 11.7% patients from the non-proclined and proclined groups, respectively. The difference was also not significant (P = 0.851).

Conclusions:

The proclination of mandibular incisors did not increase a risk of development of gingival recession during five-year observation in comparison non-proclined teeth.

Journal Article.  4741 words. 

Subjects: Restorative Dentistry and Orthodontics

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