What is a dental dam?

 
What is it?
A vasectomy is a permanent method of birth control for males. It is a surgical procedure, usually involving local anesthesia, in which the vas deferens are cut, tied, or blocked off so that sperm cannot leave the scrotum. This prevents the sperm from being expelled from the male's body during ejaculation, thereby preventing pregnancy.
 
How A Vasectomy Is Done:

 
 
What is it?
Tubal ligation is an operation in which the fallopian tubes are closed off to prevent the ova from entering the uterus and encountering sperm. The fallopian tubes are cut and tied, cauterized, clamped shut, or blocked. Tubal ligation is known as female sterilization because it renders the female unable to conceive and is largely irreversible.
 
How it's done:

 
What are they?
Spermicides come in many different forms, such as foams, jellies, creams, suppositories, and films, and they work by killing sperm after they have been inserted into the vagina. Spermicides are designed to cover the vaginal walls, as well as the opening to the cervix, after being inserted in the vagina. Different types of spermicides dissolve differently and vary in the amount of time they take to dissolve.
 
Types of Spermicides:

The copper IUD is a great option for some women who need emergency contraception. It has a very low failure rate (less than 1%), making it the most effective form of emergency contraception available in the United States. Another benefit is that it can be inserted up to five days after intercourse. The IUD is only recommended for women who are at a low risk for sexually transmitted diseases and pelvic inflammatory disease, and it is best if the woman has given birth before and does not have a history of ectopic pregnancy