First for your missing tooth u can replace in different way from low price to a high one. They are I way of rpd which is lower in price n it's removable and other which are fix is bridge and implant. In Implant we replace the missing tooth without touching the adjacent tooth. In bridge we replace the missing tooth with the support of both side of adjacent tooth which we need to cut the tooth to put the bridge. Second for your crak tooth we need to see it as we don't know how the crak is??? If u feel pain h biting

Hello You can select from two options if you want to replace the missing tooth one can be bridge for which your tooth should have support on either side and the other option is implant