A study of the debridgment efficiency of files on dentine under different irrigating solution
Yu, Henry C.
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A system was developed to evaluate the action of files on dentine under different irrigating mediums. It consists of a sample stage of two aluminum plates sandwiching a dentine and a Plexi-glass segment immersed in a sample well. The stage is well flooded with different irrigating solutions, namely water, EDTA, RC-Prep, Glyoxide and sodium hypochlorite. Files of the same size (#10 to #30) of four different manufacturers are drawn once between the plates of the sample stage in one stroke. The dentine and Plexi-glass segments are evaluated under SEM. The results of the observation are: 1. There is a direct linear relationship between the file size and debridement area. 2. The behavior of the files manufactured by Kerr, Unitek and Star are very similar, while those of Union Broach show some variations. 3. There is no significant difference in the debridement ratio between different irrigating solutions. 4. The surface topology of the action of the file is similar to that of "SNOW PLOWING." 5. The degradation of the small size files in clinical situation can be categorized as: chipping, rolling and dulling.
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 email@example.com.Black and whitew photographs included.Thesis (M.Sc.D.)--Boston University, Henry M. Goldman School of Graduate Dentistry, 1983 (Endodontics)Bibliography : leaves 192-208.
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