Calcium and phosphorus content of roots exposed to the oral environment
Abstsract This study analyzed the calcium and phosphorus content of extracted tooth roots exposed to the in vivo oral environment. 20 teeth were obtained from 16 patients and divided into two groups of 10 teeth each. In group 1, the teeth had gingival probing depths of 5 mm or more, and teeth of gro...
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| Veröffentlicht in: | Journal of clinical periodontology 1992-04, Vol.19 (4), p.268-273 |
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| creator | Cohen, Mark Garnick, Jerry J. Ringle, Robert D. Hanes, Philip J. Thompson, William O. |
| description | Abstsract
This study analyzed the calcium and phosphorus content of extracted tooth roots exposed to the in vivo oral environment. 20 teeth were obtained from 16 patients and divided into two groups of 10 teeth each. In group 1, the teeth had gingival probing depths of 5 mm or more, and teeth of group 2 had gingival recessions of 3 mm or more. Prior to extraction, the gingival margin location was recorded by placing a groove on the tooth surface. After extraction, the teeth were sectioned coronatapically, air dried and coated with carbon. Energy dispersive X‐ray spectra, excited in a scanning electron microscope, were analyzed to measure relative calcium and phosphorus contents and for calculation of their ratios. X‐rays were collected from two positions on the sectioned root. Experimental positions were selected within the exposed portion of the roots of groups 1 and 2, and unexposed positions were selected from that portion of the same root with attached periodontal membrane. At each position, calcium and phosphorus content was measured at 4 depths into the root surface: in cementum, in dentin three‐quarters of the distance to the pulp chamber, and at 2 locations in between on either side of the cemento‐dentinal junction. Analysis of data demonstrated large variations in calcium and phosphorus content from surface to surface of individual teeth and from tooth to tooth in a subject. No statistically significant differences were found between experimental and unexposed locations. Calcium and phosphorus contents were greater in roots exposed to pockets when compared to roots exposed by recession at both experimental and unexposed locations. The mean calcium/phosphorus ratio of 1.8 was increased over reported values for hydroxyapatite. Trend analysis across combined data from groups 1 and 2 showed both calcium and phosphorus were significantly higher toward locations nearer to the ptilp chamber. This study showed that the oral environment had little effect on either calcium or phosphorus content or ratios. |
| doi_str_mv | 10.1111/j.1600-051X.1992.tb00465.x |
| format | Article |
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This study analyzed the calcium and phosphorus content of extracted tooth roots exposed to the in vivo oral environment. 20 teeth were obtained from 16 patients and divided into two groups of 10 teeth each. In group 1, the teeth had gingival probing depths of 5 mm or more, and teeth of group 2 had gingival recessions of 3 mm or more. Prior to extraction, the gingival margin location was recorded by placing a groove on the tooth surface. After extraction, the teeth were sectioned coronatapically, air dried and coated with carbon. Energy dispersive X‐ray spectra, excited in a scanning electron microscope, were analyzed to measure relative calcium and phosphorus contents and for calculation of their ratios. X‐rays were collected from two positions on the sectioned root. Experimental positions were selected within the exposed portion of the roots of groups 1 and 2, and unexposed positions were selected from that portion of the same root with attached periodontal membrane. At each position, calcium and phosphorus content was measured at 4 depths into the root surface: in cementum, in dentin three‐quarters of the distance to the pulp chamber, and at 2 locations in between on either side of the cemento‐dentinal junction. Analysis of data demonstrated large variations in calcium and phosphorus content from surface to surface of individual teeth and from tooth to tooth in a subject. No statistically significant differences were found between experimental and unexposed locations. Calcium and phosphorus contents were greater in roots exposed to pockets when compared to roots exposed by recession at both experimental and unexposed locations. The mean calcium/phosphorus ratio of 1.8 was increased over reported values for hydroxyapatite. Trend analysis across combined data from groups 1 and 2 showed both calcium and phosphorus were significantly higher toward locations nearer to the ptilp chamber. This study showed that the oral environment had little effect on either calcium or phosphorus content or ratios.</description><identifier>ISSN: 0303-6979</identifier><identifier>EISSN: 1600-051X</identifier><identifier>DOI: 10.1111/j.1600-051X.1992.tb00465.x</identifier><identifier>PMID: 1569228</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Adult ; Calcium - analysis ; calcium and phosphorus ; cementum ; Dental Cementum - chemistry ; Dental Cementum - pathology ; dentin ; Dentin - chemistry ; Dentin - pathology ; Dentistry ; Dentistry, Oral Surgery & Medicine ; Electron Probe Microanalysis ; gingival recession ; Gingival Recession - metabolism ; Gingival Recession - pathology ; Humans ; Life Sciences & Biomedicine ; Periodontal Pocket - metabolism ; Periodontal Pocket - pathology ; periodontal pockets ; Phosphorus - analysis ; scanning electron microscopy ; Science & Technology ; Tooth Root - chemistry ; Tooth Root - pathology ; X-ray</subject><ispartof>Journal of clinical periodontology, 1992-04, Vol.19 (4), p.268-273</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>15</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wosA1992HK42800008</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c4748-f080160e6e110bbf735001de46692a3d86d85a65a7f6f6fee52b14df01e3e6c23</citedby><cites>FETCH-LOGICAL-c4748-f080160e6e110bbf735001de46692a3d86d85a65a7f6f6fee52b14df01e3e6c23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1600-051X.1992.tb00465.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1600-051X.1992.tb00465.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,782,786,1419,27199,27931,27932,45581,45582</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/1569228$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cohen, Mark</creatorcontrib><creatorcontrib>Garnick, Jerry J.</creatorcontrib><creatorcontrib>Ringle, Robert D.</creatorcontrib><creatorcontrib>Hanes, Philip J.</creatorcontrib><creatorcontrib>Thompson, William O.</creatorcontrib><title>Calcium and phosphorus content of roots exposed to the oral environment</title><title>Journal of clinical periodontology</title><addtitle>J CLIN PERIODONTOL</addtitle><addtitle>J Clin Periodontol</addtitle><description>Abstsract
This study analyzed the calcium and phosphorus content of extracted tooth roots exposed to the in vivo oral environment. 20 teeth were obtained from 16 patients and divided into two groups of 10 teeth each. In group 1, the teeth had gingival probing depths of 5 mm or more, and teeth of group 2 had gingival recessions of 3 mm or more. Prior to extraction, the gingival margin location was recorded by placing a groove on the tooth surface. After extraction, the teeth were sectioned coronatapically, air dried and coated with carbon. Energy dispersive X‐ray spectra, excited in a scanning electron microscope, were analyzed to measure relative calcium and phosphorus contents and for calculation of their ratios. X‐rays were collected from two positions on the sectioned root. Experimental positions were selected within the exposed portion of the roots of groups 1 and 2, and unexposed positions were selected from that portion of the same root with attached periodontal membrane. At each position, calcium and phosphorus content was measured at 4 depths into the root surface: in cementum, in dentin three‐quarters of the distance to the pulp chamber, and at 2 locations in between on either side of the cemento‐dentinal junction. Analysis of data demonstrated large variations in calcium and phosphorus content from surface to surface of individual teeth and from tooth to tooth in a subject. No statistically significant differences were found between experimental and unexposed locations. Calcium and phosphorus contents were greater in roots exposed to pockets when compared to roots exposed by recession at both experimental and unexposed locations. The mean calcium/phosphorus ratio of 1.8 was increased over reported values for hydroxyapatite. Trend analysis across combined data from groups 1 and 2 showed both calcium and phosphorus were significantly higher toward locations nearer to the ptilp chamber. This study showed that the oral environment had little effect on either calcium or phosphorus content or ratios.</description><subject>Adult</subject><subject>Calcium - analysis</subject><subject>calcium and phosphorus</subject><subject>cementum</subject><subject>Dental Cementum - chemistry</subject><subject>Dental Cementum - pathology</subject><subject>dentin</subject><subject>Dentin - chemistry</subject><subject>Dentin - pathology</subject><subject>Dentistry</subject><subject>Dentistry, Oral Surgery & Medicine</subject><subject>Electron Probe Microanalysis</subject><subject>gingival recession</subject><subject>Gingival Recession - metabolism</subject><subject>Gingival Recession - pathology</subject><subject>Humans</subject><subject>Life Sciences & Biomedicine</subject><subject>Periodontal Pocket - metabolism</subject><subject>Periodontal Pocket - pathology</subject><subject>periodontal pockets</subject><subject>Phosphorus - analysis</subject><subject>scanning electron microscopy</subject><subject>Science & Technology</subject><subject>Tooth Root - chemistry</subject><subject>Tooth Root - pathology</subject><subject>X-ray</subject><issn>0303-6979</issn><issn>1600-051X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1992</creationdate><recordtype>article</recordtype><sourceid>EZCTM</sourceid><sourceid>EIF</sourceid><recordid>eNqVUMtu1DAUtRCoTAufgGSxYIMS_EichA0qocwALQ8JBGJjOcmN6mliD7ZTpn-Po4yGLVzL8uI87vFB6CklKY3zYptSQUhCcvojpVXF0tAQkok83d9DqyN0H60IJzwRVVE9RKfebwmhBef8BJ3QXFSMlSu0rtXQ6mnEynR4d219vG7yuLUmgAnY9thZGzyG_c566HCwOFwDtk4NGMytdtaMkfgIPejV4OHx4T1D395efK03yeWn9bv6_DJpsyIrk56UJAYEAZSSpukLnsdQHWQi5lG8K0VX5krkquhFPAA5a2jW9YQCB9EyfoaeLb47Z39N4IMctW9hGJQBO3lZsIoRRrNIfLkQW2e9d9DLndOjcneSEjm3KLdyrkrOVcm5RXloUe6j-Mlhy9SM0P2VLrVF_PmC_4bG9r7VYFo4ss5nt82HjJUkzswu_51d66CCtqa2kwlR-uog1QPc_ccX5Pv68wUT8_JkcdA-wP7ooNyNFAUvcvn941p-Kd9ckc3P1_KK_wHtVrM1</recordid><startdate>199204</startdate><enddate>199204</enddate><creator>Cohen, Mark</creator><creator>Garnick, Jerry J.</creator><creator>Ringle, Robert D.</creator><creator>Hanes, Philip J.</creator><creator>Thompson, William O.</creator><general>Blackwell Publishing Ltd</general><general>Wiley</general><scope>BSCLL</scope><scope>BLEPL</scope><scope>DTL</scope><scope>EZCTM</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>199204</creationdate><title>Calcium and phosphorus content of roots exposed to the oral environment</title><author>Cohen, Mark ; Garnick, Jerry J. ; Ringle, Robert D. ; Hanes, Philip J. ; Thompson, William O.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4748-f080160e6e110bbf735001de46692a3d86d85a65a7f6f6fee52b14df01e3e6c23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1992</creationdate><topic>Adult</topic><topic>Calcium - analysis</topic><topic>calcium and phosphorus</topic><topic>cementum</topic><topic>Dental Cementum - chemistry</topic><topic>Dental Cementum - pathology</topic><topic>dentin</topic><topic>Dentin - chemistry</topic><topic>Dentin - pathology</topic><topic>Dentistry</topic><topic>Dentistry, Oral Surgery & Medicine</topic><topic>Electron Probe Microanalysis</topic><topic>gingival recession</topic><topic>Gingival Recession - metabolism</topic><topic>Gingival Recession - pathology</topic><topic>Humans</topic><topic>Life Sciences & Biomedicine</topic><topic>Periodontal Pocket - metabolism</topic><topic>Periodontal Pocket - pathology</topic><topic>periodontal pockets</topic><topic>Phosphorus - analysis</topic><topic>scanning electron microscopy</topic><topic>Science & Technology</topic><topic>Tooth Root - chemistry</topic><topic>Tooth Root - pathology</topic><topic>X-ray</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cohen, Mark</creatorcontrib><creatorcontrib>Garnick, Jerry J.</creatorcontrib><creatorcontrib>Ringle, Robert D.</creatorcontrib><creatorcontrib>Hanes, Philip J.</creatorcontrib><creatorcontrib>Thompson, William O.</creatorcontrib><collection>Istex</collection><collection>Web of Science Core Collection</collection><collection>Science Citation Index Expanded</collection><collection>Web of Science - Science Citation Index Expanded - 1992</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of clinical periodontology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cohen, Mark</au><au>Garnick, Jerry J.</au><au>Ringle, Robert D.</au><au>Hanes, Philip J.</au><au>Thompson, William O.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Calcium and phosphorus content of roots exposed to the oral environment</atitle><jtitle>Journal of clinical periodontology</jtitle><stitle>J CLIN PERIODONTOL</stitle><addtitle>J Clin Periodontol</addtitle><date>1992-04</date><risdate>1992</risdate><volume>19</volume><issue>4</issue><spage>268</spage><epage>273</epage><pages>268-273</pages><issn>0303-6979</issn><eissn>1600-051X</eissn><abstract>Abstsract
This study analyzed the calcium and phosphorus content of extracted tooth roots exposed to the in vivo oral environment. 20 teeth were obtained from 16 patients and divided into two groups of 10 teeth each. In group 1, the teeth had gingival probing depths of 5 mm or more, and teeth of group 2 had gingival recessions of 3 mm or more. Prior to extraction, the gingival margin location was recorded by placing a groove on the tooth surface. After extraction, the teeth were sectioned coronatapically, air dried and coated with carbon. Energy dispersive X‐ray spectra, excited in a scanning electron microscope, were analyzed to measure relative calcium and phosphorus contents and for calculation of their ratios. X‐rays were collected from two positions on the sectioned root. Experimental positions were selected within the exposed portion of the roots of groups 1 and 2, and unexposed positions were selected from that portion of the same root with attached periodontal membrane. At each position, calcium and phosphorus content was measured at 4 depths into the root surface: in cementum, in dentin three‐quarters of the distance to the pulp chamber, and at 2 locations in between on either side of the cemento‐dentinal junction. Analysis of data demonstrated large variations in calcium and phosphorus content from surface to surface of individual teeth and from tooth to tooth in a subject. No statistically significant differences were found between experimental and unexposed locations. Calcium and phosphorus contents were greater in roots exposed to pockets when compared to roots exposed by recession at both experimental and unexposed locations. The mean calcium/phosphorus ratio of 1.8 was increased over reported values for hydroxyapatite. Trend analysis across combined data from groups 1 and 2 showed both calcium and phosphorus were significantly higher toward locations nearer to the ptilp chamber. This study showed that the oral environment had little effect on either calcium or phosphorus content or ratios.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>1569228</pmid><doi>10.1111/j.1600-051X.1992.tb00465.x</doi><tpages>6</tpages></addata></record> |
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| ispartof | Journal of clinical periodontology, 1992-04, Vol.19 (4), p.268-273 |
| issn | 0303-6979 1600-051X |
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| source | Web of Science - Science Citation Index Expanded - 1992<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" />; MEDLINE; Access via Wiley Online Library |
| subjects | Adult Calcium - analysis calcium and phosphorus cementum Dental Cementum - chemistry Dental Cementum - pathology dentin Dentin - chemistry Dentin - pathology Dentistry Dentistry, Oral Surgery & Medicine Electron Probe Microanalysis gingival recession Gingival Recession - metabolism Gingival Recession - pathology Humans Life Sciences & Biomedicine Periodontal Pocket - metabolism Periodontal Pocket - pathology periodontal pockets Phosphorus - analysis scanning electron microscopy Science & Technology Tooth Root - chemistry Tooth Root - pathology X-ray |
| title | Calcium and phosphorus content of roots exposed to the oral environment |
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