Histological findings of supracrestal fibers after tooth movement

Date
1971
DOI
Authors
Say, Loretta
Version
OA Version
Citation
Abstract
Many orthodontists are convinced that the most difficult phase of orthodontic treatment is not the active tooth movement but the retention of teeth in their new positions. In the retention phase, relapse is commonly observed. Although volumes have been written on causes of relapse and how to avoid them, due to many enigmas, we have not found any answers. Several factors contribute to relapse, one of which is the behavior of supracrestal fibers. The supracrestal fibers under normal conditions, presumably are stable. Radioactive precursor studies have indicated that the fiber turnover rate is relatively slow in comparison to principal fibers of periodontal ligament (1,2). On the other hand, consequent to tooth removal, gingival fibers seem to regenerate very rapidly. Yet in subsequent space closure, the fiber bundles become coiled and compressed persisting in the nature of scar tissue. According to Erickson (3) and Stuteville (4), these bundles presumably caused injuries to the surrounding tissues and reopening of extraction spaces since the force of these fibers tend to return teeth to their pretreatment position. [TRUNCATED]
Description
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Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1971.
Bibliography included.
License
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