Characterization of calcified deposits on contraceptive intrauterine devices

Kálmán Patai, Mihály Berényi, Miklós Sipos, Béla Noszál

Research output: Contribution to journalArticle

26 Citations (Scopus)


The formation of calcified deposits on >200 contraceptive intrauterine devices (IUD) was quantitated as a function of time in healthy women, pregnant women, and women with a pathologic lesion. The incrustment formation was significantly enhanced when inflammation occured, but change could not be observed in cases of pregnancy. The incrustments were analyzed by x-ray diffraction, infrared spectroscopy, x-ray microprobe, and ultramicrochemical stone analysis techniques. Major components and their average w/w percent quantities in the incrustments are as follows: calcium carbonate 75%, apatite 5%, and organic matrix 20%. Earlier hypotheses on the chemical processes of deposit formation are discussed, and a new, ionic mechanism of calcification on IUD surfaces is suggested.

Original languageEnglish
Pages (from-to)305-308
Number of pages4
Issue number5
Publication statusPublished - Nov 1 1998


  • CaCO deposits
  • Calcification
  • Incrustments
  • Intrauterine contraceptive devices

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynaecology

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