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Energy dispersive spectrophotometric and X-ray diffraction observations in IUDs

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Advances in Contraception

Abstract

This paper describes preliminary observations of the surface deposits on Lippes Loop, Dalkon Shield, and Saf-T-Coil IUDs removed after periods of time up to 15 years. Rosettes of euhedral rhombic crystals with a columnar prismatic habit were observed on a Lippes Loop that had beenin situ for 15 years. All mineral deposits were found to be calcium salts, but the degree of crystallization varied significantly, from almost totally amorphous to the perfect euhedral crystal form. The microenvironment alone or in combination with cyclic changes in the biochemical milieu surrounding the IUD may influence the deposition of specific mineral species.

Resumé

On décrit ici des observations préliminaires concernant les dépôts constatés à la surface de DIU de type Lippes Loop, Dalkon Shield et Saf-T-Coil; ces DIU ont été retirés et étudiés après une durée d'utilisation allant jusqu'à 15 ans. On a observé, sur un DIU resté en place pendant 15 ans, des rosettes de cristaux rhombo-édriques, disposés en colonnes prismatiques. Tous les dépôts de minéraux consistaient en des sels de calcium, mais le degré de cristallisation était très variable, réalisant des structures presque totalement amorphes ou au contraire des cristaux parfaitement euédriques. II est possible que le micro-environnement influence à lui seul, ou avec les modifications cycliques du milieu biochimique entourant le DIU, le dépôt de minéraux spécifiques.

Resumen

Se describen las observaciones preliminares de depósitos en la superficie de los dispositivos intrauterinos Lippes Loop, Dalkon Shield y Saf-T-Coil, quitados despues de períodos de tiempo hasta de 15 años. En un DIU que estuvoin situ durante 15 años, se observaron rosetas de cristales rómbicos euhedrales con una relación prismática columnar. Todos los depósitos minerales fuerron sales de calcio, pero el grado de cristalización varió significativamente desde el casi completamente amorfo hasta el perfecto cristal euhedral. El microambiente solo o en combinación con los cambios cíclicos en el medio bioquímico que rodea al DIU, puede influir en la deposición de especies minerales específicas.

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References

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Keith, L.G., Bailey, R. Energy dispersive spectrophotometric and X-ray diffraction observations in IUDs. Adv Contracept 1, 171–180 (1985). https://doi.org/10.1007/BF01849799

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  • DOI: https://doi.org/10.1007/BF01849799

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