It is unlikely that the use of sex toys or objects would desensitize the clitoris, unless there is an injury or damage to the nerves. However, it is common for the use of toys or masturbation to potentially prolong the time it takes to reach orgasm with a partner. This does not necessarily indicate a problem as long as there are no other symptoms present. If you have any further questions or concerns, it is recommended to reach out to a healthcare professional for personalized advice.