Table of Contents
ISRN Dentistry
Volume 2013, Article ID 102816, 6 pages
Research Article

Laser Doppler Blood-Flow Signals from Human Teeth during an Alignment and Leveling Movement Using a Superelastic Archwire

1Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, Avenida Professor Lineu Prestes 2242, 05508-000 São Paulo, SP, Brazil
2University of Manitoba, Faculty of Dentistry, Preventive Dental Science, Pediatric Division, D341 Dental Bldg, 790 Bannatyne Avenue, Winnipeg, MB, Canada R3E 0W2

Received 12 July 2013; Accepted 5 August 2013

Academic Editors: C. Lekic, L. Levin, and D. Wray

Copyright © 2013 Alvaro Wagner Rodrigues Salles 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.


Objective. The purpose of this study was to examine alterations in blood-flow signals (BFS) from human teeth during an alignment and leveling phase (superelastic wire 0.014′′) in a clinical orthodontic treatment using laser doppler flowmetry (LDF). Materials and Methods. Recordings were made in 12 maxillary left central incisors. The basal value of the BFS from each tooth (without orthodontic forces) was compared with the corresponding values of BFS during four periods of observation: 20 minutes, 48 hours, 72 hours, and one month after the activation of the orthodontic appliance. Results. Statistically significant decrease of BFS was observed at 20 minutes, 48 hours, and 72 hours . No differences were found comparing BFS on day 30 and the corresponding basal values. Conclusion. Under real clinical conditions, a significant decrease in BFS was verified during the initial phase of the treatment, followed by a recovery on day 30.