© 1988 by European Orthodontic Society
A quantitative study of oxytalan fibres in the transseptal region and tension zones of rat molars following orthodontic movement
University of Bergen Norway
1K Bowling University of Bergen School of Dentistry Department of Orthodontics and Facial Orthopedics Årstadveien 17 5000 Bergen, Norway
This study was an attempt to investigate whether there was any oxytalan fibre increase in the transseptal region as a result of orthodontic movement, and if so, whether this could be a contributory factor in the problem of relapse.
The experimental model was based on orthodontic movement of maxillary molars in rats, followed by a light microscopic examination and registration of the oxytalan fibres in two different areas of the periodontium as well as within the transseptal fibre region. Within the transseptal fibre bundles there was no increase in the oxytalan fibre concentration, although in the periodontal ligament deep to the transseptal fibres a slight increase had occurred. The oxytalan fibres that were seen were nearly always in close proximity to blood vessels.
Oxytalan fibres seem to play little if any role in relapse of orthodontic movement.
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