Document Detail

Gingival recessions and the change of inclination of mandibular incisors during orthodontic treatment.
MedLine Citation:
PMID:  22828081     Owner:  NLM     Status:  Publisher    
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 (T(S)), bonded retainer placed immediately after treatment (T(0)), dental casts and lateral cephalograms available pre-treatment (T(S)), post-treatment (T(0)), 2 years post-treatment (T(2)), and 5 years post-treatment (T(5)). 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 (T(0) to T(5)) 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 T(5), 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.
Anne Marie Renkema; Piotr S Fudalej; Alianne Renkema; Ewald Bronkhorst; Christos Katsaros
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-24
Journal Detail:
Title:  European journal of orthodontics     Volume:  -     ISSN:  1460-2210     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7909010     Medline TA:  Eur J Orthod     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Centre, The Netherlands.
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