What is the Difference Between Cervical Cap and Diaphragm?

The cervical cap and diaphragm are both barrier methods of birth control used to prevent pregnancy. They are dome-shaped devices made of silicone that are placed inside the vagina to form a barrier over the cervix. Both methods require the use of spermicide for maximum effectiveness. However, there are some differences between the two:

1. Size and Shape: The diaphragm is larger and covers not only the cervix but also some surrounding area called the ectocervix. In contrast, the cervical cap is smaller and shaped like a sailor's hat, providing a snugger fit directly on top of the cervix.
2. Effectiveness: Both methods have similar success rates for preventing pregnancy, with the cervical cap being about 71% effective for women who have given birth vaginally and 86% effective for women who have never been pregnant or given birth vaginally. Diaphragms are 84-94% effective against pregnancy.
3. Duration: The cervical cap can be worn for up to 48 hours before removal, while diaphragms must be removed within 24 hours.
4. Fitting: Diaphragms come in various sizes, offering a wider range of options for users. The cervical cap, in contrast, is fitted differently and is available in fewer sizes.
5. Usage: Both methods are suitable for women who require contraception only intermittently or have contraindications to hormonal contraception. However, some guidelines suggest that the cervical cap may protect against multiple coital acts without requiring the application of additional spermicide, a practice that is not universally accepted.

If you're interested in using a cervical cap or diaphragm, consult your healthcare provider or a local clinic for an exam and fitting.

Comparative Table: Cervical Cap vs Diaphragm

Here is a table comparing the differences between a cervical cap and a diaphragm:

Both the cervical cap and the diaphragm are reversible, user-controlled contraceptive methods that can be used without the involvement of a partner. They are vaginal barrier methods of birth control, designed to prevent sperm from entering the uterus and fallopian tubes. However, they differ in size, shape, coverage, effectiveness, and amount of time they can be left inserted.