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The Scientific World Journal
Volume 2015 (2015), Article ID 193206, 5 pages
http://dx.doi.org/10.1155/2015/193206
Research Article

The Effect of Changes in Lower Incisor Inclination on Gingival Recession

1Department of Periodontology, Faculty of Dentistry, Kırıkkale University, 71100 Kırıkkale, Turkey
2Department of Orthodontics, Faculty of Dentistry, Kırıkkale University, 71100 Kırıkkale, Turkey
3Private Practice, 1386 Street, No. 7, Alsancak, 35220 İzmir, Turkey

Received 26 January 2015; Revised 25 March 2015; Accepted 31 March 2015

Academic Editor: Rolando Vernal

Copyright © 2015 Gulen Kamak et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Aim. Orthodontic treatment may promote development of recessions. The mechanism by which orthodontic treatment influences occurrence of recessions remains unclear. The aim of this study was to test the hypothesis that a change of mandibular incisor inclination promotes development of labial gingival recessions. Materials and Methods. The study sample comprised dental casts and lateral cephalograms obtained from 109 subjects before orthodontic treatment (Tb) and after orthodontic treatment (Ta). Depending on the change of lower incisor inclination during treatment, the subjects were divided into three groups: Retroclination (R), Stable Position (S), and Proclination (P). The presence of gingival recessions of mandibular incisors and clinical crown heights were assessed on plaster models. Results and Conclusions. From Tb to Ta, Inc_Incl showed a statistically significant change in the R, P, and S groups (). Increase of clinical crown heights of the lower incisors (42, 4, and 31) was not statistically significant in any group. The only statistically significant intergroup difference was the greater increase of the clinical crown height of tooth number 32 in the P group in comparison with the R group (). The change of lower incisor inclination during treatment did not lead to development of labial gingival recessions in the study sample.