However, scientific evidence suggests that because of a number of mechanisms mentioned above, pregnancy rarely occurs with the use of such IUDs.
لٰكِنَّ ذٰلِكَ نَادِرًا مَا يَحْدُثُ وَفْقًا لِلْعُلَمَاءِ ،‏ كَمَا هِيَ ٱلْحَالُ عِنْدَ ٱسْتِعْمَالِ حُبُوبِ مَنْعِ ٱلْحَمْلِ .‏