An analysis of the corrosion process of the nova-T IUD
To measure the copper from Nova-T IUDs that have been used for up to 9 years. To examine the composition and extent of surface deposits on these used IUDs. Nova-T IUDs were randomly collected at normal replacement or removal. The copper, silver and calcium content was quantified by X-ray fluorescenc...
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| Veröffentlicht in: | Advances in contraception 1994-12, Vol.10 (4), p.287-301 |
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| container_title | Advances in contraception |
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| creator | CHANTLER, E KENWAY, P LAROUK, Z FARAGHER, E. B MORRIS, J KOSONEN, A ALLONEN, H ELSTEIN, M |
| description | To measure the copper from Nova-T IUDs that have been used for up to 9 years. To examine the composition and extent of surface deposits on these used IUDs.
Nova-T IUDs were randomly collected at normal replacement or removal. The copper, silver and calcium content was quantified by X-ray fluorescence; surface topography and analysis was by scanning electron microscopy and X-ray dispersive analysis.
Copper loss slowly increased at an exponential rate over the study period but the copper was stabilized by the silver core and did not show increased fragmentation with extended use. No corrosion of the silver core was detected. Calcium- and sulfur-containing surface deposits built up on the copper but did not modify the rate of copper release.
The mean rate of copper loss was 0.25 mumol/day during the first 40 months of use, which is not significantly different from that of similar IUDs without a silver core. The silver core of the copper coil on the Nova-T IUD prevented its fragmentation. Surface deposits containing calcium and sulfur that built up on the IUD did not affect the rate of copper loss. |
| doi_str_mv | 10.1007/BF01984126 |
| format | Article |
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Nova-T IUDs were randomly collected at normal replacement or removal. The copper, silver and calcium content was quantified by X-ray fluorescence; surface topography and analysis was by scanning electron microscopy and X-ray dispersive analysis.
Copper loss slowly increased at an exponential rate over the study period but the copper was stabilized by the silver core and did not show increased fragmentation with extended use. No corrosion of the silver core was detected. Calcium- and sulfur-containing surface deposits built up on the copper but did not modify the rate of copper release.
The mean rate of copper loss was 0.25 mumol/day during the first 40 months of use, which is not significantly different from that of similar IUDs without a silver core. The silver core of the copper coil on the Nova-T IUD prevented its fragmentation. Surface deposits containing calcium and sulfur that built up on the IUD did not affect the rate of copper loss.</description><identifier>ISSN: 0267-4874</identifier><identifier>EISSN: 1573-7195</identifier><identifier>DOI: 10.1007/BF01984126</identifier><identifier>PMID: 7740995</identifier><identifier>CODEN: ADCOEB</identifier><language>eng</language><publisher>Boston, MA: Kluwer</publisher><subject>Biological and medical sciences ; Birth control ; Calcium - analysis ; Copper - analysis ; Corrosion ; Equipment Failure ; Female ; Gynecology. Andrology. Obstetrics ; Humans ; Intrauterine Devices, Copper ; Medical sciences ; Other methods of contraception. Sterilization ; Silver - analysis ; Spectrometry, X-Ray Emission ; Sulfur - analysis ; Time Factors</subject><ispartof>Advances in contraception, 1994-12, Vol.10 (4), p.287-301</ispartof><rights>1995 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c311t-3288cab598b536760e6d77d3c36a9c80481ec78ee4cc4d356ebdd37cd1db04db3</citedby><cites>FETCH-LOGICAL-c311t-3288cab598b536760e6d77d3c36a9c80481ec78ee4cc4d356ebdd37cd1db04db3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3392787$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/7740995$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>CHANTLER, E</creatorcontrib><creatorcontrib>KENWAY, P</creatorcontrib><creatorcontrib>LAROUK, Z</creatorcontrib><creatorcontrib>FARAGHER, E. B</creatorcontrib><creatorcontrib>MORRIS, J</creatorcontrib><creatorcontrib>KOSONEN, A</creatorcontrib><creatorcontrib>ALLONEN, H</creatorcontrib><creatorcontrib>ELSTEIN, M</creatorcontrib><title>An analysis of the corrosion process of the nova-T IUD</title><title>Advances in contraception</title><addtitle>Adv Contracept</addtitle><description>To measure the copper from Nova-T IUDs that have been used for up to 9 years. To examine the composition and extent of surface deposits on these used IUDs.
Nova-T IUDs were randomly collected at normal replacement or removal. The copper, silver and calcium content was quantified by X-ray fluorescence; surface topography and analysis was by scanning electron microscopy and X-ray dispersive analysis.
Copper loss slowly increased at an exponential rate over the study period but the copper was stabilized by the silver core and did not show increased fragmentation with extended use. No corrosion of the silver core was detected. Calcium- and sulfur-containing surface deposits built up on the copper but did not modify the rate of copper release.
The mean rate of copper loss was 0.25 mumol/day during the first 40 months of use, which is not significantly different from that of similar IUDs without a silver core. The silver core of the copper coil on the Nova-T IUD prevented its fragmentation. Surface deposits containing calcium and sulfur that built up on the IUD did not affect the rate of copper loss.</description><subject>Biological and medical sciences</subject><subject>Birth control</subject><subject>Calcium - analysis</subject><subject>Copper - analysis</subject><subject>Corrosion</subject><subject>Equipment Failure</subject><subject>Female</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Intrauterine Devices, Copper</subject><subject>Medical sciences</subject><subject>Other methods of contraception. Sterilization</subject><subject>Silver - analysis</subject><subject>Spectrometry, X-Ray Emission</subject><subject>Sulfur - analysis</subject><subject>Time Factors</subject><issn>0267-4874</issn><issn>1573-7195</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkMFLwzAUxoMoc04v3oUexINQTfrSvOQ4p9PBwMt2LulLipWumc0m7L-3Ypmnd_h-fO_jx9i14A-Cc3x8mnNhtBSZOmFjkSOkKEx-ysY8U5hKjfKcXcT4yTk3CtWIjRAlNyYfMzVtE9va5hDrmIQq2X34hELXhViHNtl2gXw8Bm34tukqWayfL9lZZZvor4Y7Yev5y2r2li7fXxez6TIlEGKXQqY12TI3usyh_8y9cogOCJQ1pLnUwhNq7yWRdJArXzoHSE64kktXwoTd_fX2S772Pu6KTR3JN41tfdjHApEbEIA9eP8HUj89dr4qtl29sd2hELz4lVT8S-rhm6F1X268O6KDlT6_HXIbyTZVZ1uq4xEDMBlqhB9SkWxs</recordid><startdate>19941201</startdate><enddate>19941201</enddate><creator>CHANTLER, E</creator><creator>KENWAY, P</creator><creator>LAROUK, Z</creator><creator>FARAGHER, E. B</creator><creator>MORRIS, J</creator><creator>KOSONEN, A</creator><creator>ALLONEN, H</creator><creator>ELSTEIN, M</creator><general>Kluwer</general><scope>IQODW</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>19941201</creationdate><title>An analysis of the corrosion process of the nova-T IUD</title><author>CHANTLER, E ; KENWAY, P ; LAROUK, Z ; FARAGHER, E. B ; MORRIS, J ; KOSONEN, A ; ALLONEN, H ; ELSTEIN, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c311t-3288cab598b536760e6d77d3c36a9c80481ec78ee4cc4d356ebdd37cd1db04db3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Biological and medical sciences</topic><topic>Birth control</topic><topic>Calcium - analysis</topic><topic>Copper - analysis</topic><topic>Corrosion</topic><topic>Equipment Failure</topic><topic>Female</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Intrauterine Devices, Copper</topic><topic>Medical sciences</topic><topic>Other methods of contraception. Sterilization</topic><topic>Silver - analysis</topic><topic>Spectrometry, X-Ray Emission</topic><topic>Sulfur - analysis</topic><topic>Time Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>CHANTLER, E</creatorcontrib><creatorcontrib>KENWAY, P</creatorcontrib><creatorcontrib>LAROUK, Z</creatorcontrib><creatorcontrib>FARAGHER, E. B</creatorcontrib><creatorcontrib>MORRIS, J</creatorcontrib><creatorcontrib>KOSONEN, A</creatorcontrib><creatorcontrib>ALLONEN, H</creatorcontrib><creatorcontrib>ELSTEIN, M</creatorcontrib><collection>Pascal-Francis</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>Advances in contraception</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>CHANTLER, E</au><au>KENWAY, P</au><au>LAROUK, Z</au><au>FARAGHER, E. B</au><au>MORRIS, J</au><au>KOSONEN, A</au><au>ALLONEN, H</au><au>ELSTEIN, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An analysis of the corrosion process of the nova-T IUD</atitle><jtitle>Advances in contraception</jtitle><addtitle>Adv Contracept</addtitle><date>1994-12-01</date><risdate>1994</risdate><volume>10</volume><issue>4</issue><spage>287</spage><epage>301</epage><pages>287-301</pages><issn>0267-4874</issn><eissn>1573-7195</eissn><coden>ADCOEB</coden><abstract>To measure the copper from Nova-T IUDs that have been used for up to 9 years. To examine the composition and extent of surface deposits on these used IUDs.
Nova-T IUDs were randomly collected at normal replacement or removal. The copper, silver and calcium content was quantified by X-ray fluorescence; surface topography and analysis was by scanning electron microscopy and X-ray dispersive analysis.
Copper loss slowly increased at an exponential rate over the study period but the copper was stabilized by the silver core and did not show increased fragmentation with extended use. No corrosion of the silver core was detected. Calcium- and sulfur-containing surface deposits built up on the copper but did not modify the rate of copper release.
The mean rate of copper loss was 0.25 mumol/day during the first 40 months of use, which is not significantly different from that of similar IUDs without a silver core. The silver core of the copper coil on the Nova-T IUD prevented its fragmentation. Surface deposits containing calcium and sulfur that built up on the IUD did not affect the rate of copper loss.</abstract><cop>Boston, MA</cop><cop>London</cop><cop>Dordrecht</cop><pub>Kluwer</pub><pmid>7740995</pmid><doi>10.1007/BF01984126</doi><tpages>15</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0267-4874 |
| ispartof | Advances in contraception, 1994-12, Vol.10 (4), p.287-301 |
| issn | 0267-4874 1573-7195 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_77093137 |
| source | MEDLINE; Alma/SFX Local Collection |
| subjects | Biological and medical sciences Birth control Calcium - analysis Copper - analysis Corrosion Equipment Failure Female Gynecology. Andrology. Obstetrics Humans Intrauterine Devices, Copper Medical sciences Other methods of contraception. Sterilization Silver - analysis Spectrometry, X-Ray Emission Sulfur - analysis Time Factors |
| title | An analysis of the corrosion process of the nova-T IUD |
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