For the admission in the medical or dental courses you must have to register for the processes and in order to do that you need to purchase the pin for the registration for the online counselling rounds. If you did not purchase the pin it means that you cannot go for the choice filling rounds and you will not be allotted any seats in any of the institute. You may have the chance of getting the admission through the management quota seat if the process is being done by the institute itself. Or you may have to wait till the next year for the counselling and admission.