Date of Award
Master of Science in Chemical Engineering - (M.S.)
Chemical Engineering, Chemistry and Environmental Science
David S. Kristol
James A. Stackhouse
Richard Clyde Parker
A new kind of dental adhesive, O-Chlorophenol-TDI-HEMA-Pentaerythritol (TDI), was studied under long term conditions. The test was done in human third molar teeth which had been extracted 7 days to 6 months. Both citric acid and non citric acid pre-treatments were used on dentin surfaces. Based on Causton's mineralizing solution pre-treatment method, we have used 3 kinds of mineralizing solutions, ITS, 0.5% CaCl2, NaF, as pre-treatment solutions. There were no significant differences between the citric acid and non citric acid pre-treatment. The ITS mineralizing solution pre-treatment caused a large increase in bond strength. The average bond strength of 1791 psi after 24 hrs in 0.9% saline solution fell to 625 psi after 6 month in the saline solution. When compared with five commercial dentin bonding agents under the same conditions, the TDI produced the highest bond strengths.
Ye, Yunwen, "Preparation and testing of novel blocked isocyanate dental adhesives based upon hydroxyhexylmethacrylate" (1990). Theses. 1969.