The main difference between the IUD and the IUD is that the IUD causes a non-bacterial inflammatory reaction in the endometrium after it is inserted into the uterine cavity. This prevents the fertilization of the egg and thus achieves the purpose of contraception, which is the contraceptive principle of the regular IUD. This is the contraceptive principle of the regular IUD. The Pill IUD is a ring in which some drugs are added to the ring and released periodically, and the common one in clinical practice is the Mannedel Ring, in which highly effective progestin is added to counteract estrogen, thus causing a thinning of the endometrium. The fertilized egg will not be able to implant in the thinned endometrium, so it is used to achieve the contraceptive effect. This is the main difference between the pill ring and the regular contraceptive ring, and it is recommended that you choose which birth control ring according to your clinical condition. If the condition is caused by adenomyosis, endometriosis, and excessive menstruation, then it is recommended to use the pill ring for contraception, for example, you can get the Manometra ring.