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dc.contributor.authorWiener, B. Harveyen_US
dc.date.accessioned2019-10-22T15:58:25Z
dc.date.available2019-10-22T15:58:25Z
dc.date.issued1969
dc.date.submitted1969
dc.identifier.other(OCoLC)15927364
dc.identifier.otherb14327739
dc.identifier.urihttps://hdl.handle.net/2144/38361
dc.descriptionPLEASE 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.en_US
dc.descriptionThesis (M.Sc.D.)--Boston University School of Graduate Dentistry, 1969.en_US
dc.descriptionBibliography, chart, colored photographs, tables included.en_US
dc.description.abstractThe purpose of this study was to investigate two important physical properties of root canal sealers; setting time, and dimensional changes after setting. Eight root canal sealers were compared as to their setting times at various environmental conditions of temperature and relative humidity. These same sealers were also evaluated as to their dimensional changes after setting both qualitatively (visually and photographically) and quantitatively, using glass micropipettes of known volume. The results indicate that generally, most sealers appear to have adequate working and setting times and that temperature and relative humidity are important variables, which can exert a profound influence on setting time. Regarding dimensional changes, some sealers exhibited evidence of shrinkage after 7 and 10 days while most sealers exhibited shrinkage after 90 days, when allowed to set at conditions of room temperature and relative humidity (72°F - 50% RH± 2). It was concluded that further investigation of the physical properties of root canal sealers should be performed, with the aim at providing standardization of methods for study, and as well specifications for the materials themselves, similar to those which exist for other dental materials.en_US
dc.language.isoen_US
dc.publisherBoston Universityen_US
dc.rightsThis 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.en_US
dc.subjectRoot canal therapyen_US
dc.subjectDental pulp cavityen_US
dc.subjectDental materialsen_US
dc.titleA comparative study of important physical properties of various root canal sealersen_US
dc.typeThesis/Dissertationen_US
etd.degree.nameMaster of Science in Dentistryen_US
etd.degree.levelmastersen_US
etd.degree.disciplineEndodonticsen_US
etd.degree.grantorBoston Universityen_US


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