Baker, Barry Lawrence2018-10-312018-10-3119721972(OCoLC)28480953b19903054https://hdl.handle.net/2144/31736PLEASE 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 (M.Sc.D.)--Boston University, School of Graduate Dentistry, 1972 (Periodontology)Includes bibliography (leaves 38-42)A clinical study was undertaken to assess the ability of four toothbrushes of varying bristle design and stiffness to remove dental plaque in preventive and non-preventively oriented patients. Patients were stained with disclosing solution and their plaque recorded by means of the OHI-S. Patients selected a brush arbitrarily and were asked to brush, on completion of brushing, they were stained again and the plaque re-scored. Patients were then asked to complete a questionaire. The study was completed on 120 patients, 60 non-instructed and 60 instructed in oral physiotherapy techniques. [TRUNCATED]en-USThis 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.ToothbrushingDental plaqueThesis/Dissertation99184892200001161