The effect of various retraction procedures on sulcular epithelium of dogs;
Date
1977
DOI
Authors
Al-Zuhair, Nohoud
Version
OA Version
Citation
Abstract
The use of various retraction methods as an important prelude to provide access for plastic impression materials into the gingival sulcus, and the copper band impression technique cause alterations to the sulcular epithelium which are usually of a temporary nature. It was the purpose of this study to observe histologically and by means of scanning electron microscopy the ultrastructural changes in cross-sections (histology) and the surface morphological features (scanning electron microscopy). Also a combination technique of scanning electron microscopy followed by processing of the same sample for histology allowed a direct correlation between the two modalities.
Three mongrel dogs were treated according to a schedule, which, when they were sacrificed after three weeks, yielded information at zero hour, 3 days, one week and three weeks. Biopsy samples were prepared for scanning electron microscopy and light microscopy. The results indicated that healing of the tissues treated by means of electrosurgery was slightly delayed compared to the other two techniques.
It could be concluded that the retraction procedure with copper band or the cord are safe modalities, causing only minor microscopical structural changes which were of a temporary nature.
Description
PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.
Thesis (D.Sc.D.)--Boston University, School of Graduate Dentistry, 1977. (Periodontology)
Includes bibliography.
Thesis (D.Sc.D.)--Boston University, School of Graduate Dentistry, 1977. (Periodontology)
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.