[Incrustation of intrauterine devices].

Incrustation was found to have occurred to intra-uterine devices (Szontágh, Lippes, Cooper T 200), between one and three years from the dates of insertion. Calcium carbonate accounted for most of that incrustation and increased quantitatively, in the course of time. To avoid deterioration of complications, the recommendation is made to respond even to the slightest complaint by removal or exchange of an IUD when more than one year has passed from insertion.