Watson, Ian D.2020-12-092020-12-0919811981(OCoLC)451118143b33423854https://hdl.handle.net/2144/41775Thesis (MSD) --Boston University School of Graduate Dentistry, 1981 (Department of Endodontics).Includes bibliography: leaves 201-217.en-USThis work is being made available in OpenBU by permission of its author, and is available for research purposes only. All rights are reserved to the author.Root canal filling materialsAn initial investigation into the irritation potential and systemic distribution of selected root canal sealersThesis/Dissertation