Incidence of relapse following orthodontic treatment
Date
1972
DOI
Authors
Ginsberg, George
Version
OA Version
Citation
Abstract
It is within the scope of this paper to stimulate and arouse new interest in the study of retention. The research is basically concerned with the incidence of rotational relapse. the reopening of the once
tightly approximated teeth adjacent to extraction sites, and the possible
influence of third molars on the stability of the treated dentition.
In this study. thirty-six patients were used who had all completed
their active phase of treatment. The subjects were divided into two
groups, extraction cases, and non-extraction cases. In order to
investigate the incidence of rotational relapse, the activity of extraction
sites, and the possible influence of third molars on extraction sites,
pre-treatment records were compared statistically with the final records
and with those taken within a two year retention interval.
It was observed that the incidence of rotational relapse was
high. Similarly, there was found to be a high degree of relapse activity
in extraction sites. Finally, it was observed that in the presence of
third molars, an almost equal number of extraction sites closed during
retention as reopened, and in some cases each quadrant of the same arch
displayed opposite activity. This suggests that the influence of third molars
on retained orthodontic cases is questionable and if it exists, at best, it
is unpredictable.
The high incidence of relapse as evidenced by this study indicates
the importance of, and the need for further research and study in this area.
Description
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Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1972 (Orthodontics)
Bibliography included.
Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1972 (Orthodontics)
Bibliography included.
License
This work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.