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Full-Text Articles in Life Sciences
Development Of Periapical Lesions In Immunosuppressed Rats, Phillip A. Waterman Jr.
Development Of Periapical Lesions In Immunosuppressed Rats, Phillip A. Waterman Jr.
Loma Linda University Electronic Theses, Dissertations & Projects
The pathogenesis of periapical lesions is the interaction of the oral flora with the existing host defenses. The role of bacteria has been established in endodontic disease but the contribution of the host defenses in periapical lesion formation is less clear. The purpose of this study was to compare periapical lesion development in immunosuppressed rats with that in normal rats. Thirty-five, eight-week old Sprague-Dawley rats were equally divided into seven groups. Groups 1, 2, and 3 were given weekly injections of Cytoxan, an immunosuppressive agent. Groups 4, 5, and 6 received no immunosuppressive therapy. Group 7 served as a control, …
An Evaluation Of Surface Enamel Damage Following The Debonding Of Ceramic Brackets : A Follow-Up Study, B. Scott Hood
An Evaluation Of Surface Enamel Damage Following The Debonding Of Ceramic Brackets : A Follow-Up Study, B. Scott Hood
Loma Linda University Electronic Theses, Dissertations & Projects
To evaluate surface enamel damage after debonding ceramic brackets using their manufacturer's recommended methods, sixty four bicuspid teeth were bonded with three different types of ceramic brackets and one type of metal bracket. All the brackets tested utilized mechanical retention only. The brackets were debonded in the mouth seven to ten days after bonding, extracted and evaluated with a scanning electron microscope. The study concluded that: 1) all brackets alter the surface enamel, 2) there is a significant difference in surface enamel damage between the metal bracket and the ceramic brackets utilizing a tensile debonding method, 3) there is no …
A Comparison Of Benthic Invertebrate Distributions In Four Ohio River Basin Wetlands, Michael D. Hardin
A Comparison Of Benthic Invertebrate Distributions In Four Ohio River Basin Wetlands, Michael D. Hardin
Morehead State Theses and Dissertations
A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Michael D. Hardin on April 1, 1992.