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A study of mineral density surrounding resorption sites in teeth

dc.contributor.authorAvery, James K.en_US
dc.contributor.authorMeyers, R. A.en_US
dc.contributor.authorHale, Lawrence E.en_US
dc.date.accessioned2007-04-06T17:40:11Z
dc.date.available2007-04-06T17:40:11Z
dc.date.issued1967-01en_US
dc.identifier.citationAvery, J. K.; Meyers, R. A.; Hale, L. E. (1967)."A study of mineral density surrounding resorption sites in teeth." American Journal of Anatomy 120(1): 55-69. <http://hdl.handle.net/2027.42/49639>en_US
dc.identifier.issn0002-9106en_US
dc.identifier.issn1553-0795en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/49639
dc.description.abstractAn investigation of mineral density surrounding lacunar resorption sites in cases of both internal and external root resorption, was carried out on 37 human primary and permanent teeth. In addition, equivalent areas of the roots of 14 normal appearing teeth were studied for comparison. Thirty-two of the teeth were analyzed using microradiographic and microhardness techniques and the remainder were studied microscopically after histologic preparation. The teeth used for microradiographic analysis were embedded in plastic, bisected and half of each tooth was sectioned at 70–100 Μ. Microadiographs were taken at 9.5 kv and exposed to 30 milliamperes for 25 to 40 minutes. The other halves of the teeth were used for microhardness tests using a Tukon Microhardness Tester. One series of microhardness measurements was made 10 to 40 Μ from sites of active resorption in root dentin and a second series was made 250 to 500 Μ from these sites. The hardness measurements of the first series were found to be significantly lower than those of the second in cases of both external and internal resorption. Hardness values of the surface of normal appearing roots were also less than areas 250 to 500 Μ deeper in the dentin. Microradiographs did not reveal any definite zone of subsurface demineralization although some resorption sites were bordered by irregular areas of decreased radiodensity which may be due to superimposition of several resorption sites within the thickness of the tooth section. Histologic observations did not reveal a definite subsurface demineralization gradient. The lacunar resorption front was found to be a multilocular and completely interconnected system.en_US
dc.format.extent1107914 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.publisherWiley Subscription Services, Inc., A Wiley Companyen_US
dc.subject.otherLife and Medical Sciencesen_US
dc.subject.otherCell & Developmental Biologyen_US
dc.titleA study of mineral density surrounding resorption sites in teethen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelMedicine (General)en_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Oral Biology, School of Dentistry and Department of Anatomy, Medical School, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationumDepartment of Oral Biology, School of Dentistry and Department of Anatomy, Medical School, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationumDepartment of Oral Biology, School of Dentistry and Department of Anatomy, Medical School, University of Michigan, Ann Arbor, Michiganen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/49639/1/1001200105_ftp.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1002/aja.1001200105en_US
dc.identifier.sourceAmerican Journal of Anatomyen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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