The effect of various retraction procedures in humans upon the periodontium: a correlation of clinical and histologic observations
Date
1976
DOI
Authors
Schuessler, Peter J.
Ruel, Jon A.
Version
OA Version
Citation
Abstract
This study was conceived to investigate on a clinical and histologic basis the effects, both initial and permanent, of various retraction procedures on the periodontium of humans. The three most commonly utilized retraction techniques, cord impregnated with 1:1000 epinephrine, copper band and electrosurgery, were performed on unprepared pre-molars which were scheduled for extraction for orthodontic reasons with one tooth remaining as a control. Clinical observations were noted and measurements relating to the loss of gingival margin height were recorded. The teeth were extracted for histologic examination at zero, twenty-four and ninety-six hours and eight, sixteen and twenty-four days with an adequate section of the periodontium being obtained with the specimen.
The results demonstrate the existence of a significant difference in loss of marginal height between cord and electrosurgery and copper band and electrosurgery with the electrosurgical procedure showing the greatest gingival margin loss (.550 millimeters). Histologically and clinically, the tissue associated with the electrosurgery showed a delay in wound healing as compared to the other techniques, however, no permanent histologic damage or alveolar bone loss was witnessed in the healed specimens. In conclusion, the retraction procedure utilized should constitute either the cord or copper band technique with the specific procedure being determined by the choice of the impression material.
Description
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Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, Depts. of Periodontology and Prosthetic Dentistry.
Includes bibliography.
Thesis (M.Sc.D.)--Boston University School of Graduate Dentistry, Depts. of Periodontology and Prosthetic Dentistry.
Includes bibliography.
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.