41. The width of the cavity is most important parameter related to IUD performance and tolerance. 42. Long term IUD use is associated with TOA . Actinomyces is also recovered from TOA. 43. Margulies has successfully used IUDs in Berlin. 44. ThatUs one motivator for me; IUd like to see them get the credit they deserve. 45. And there is a new one-year IUD that contains progestin, a synthetic progesterone. 46. The government toughens population control measures, ordering compulsory IUD insertion for women with one child. 47. The IUD emits a progestin that thickens the cervical mucus, making it impenetrable to sperm. 48. Yet with 106 million users, IUDs are the world's most prevalent reversible contraception. 49. Therefore, the copper IUD is considered to be a true contraceptive and not an abortifacient. 50. Howard Tatum, in the USA, conceived the plastic T-shaped IUD in 1968.
