Can Two Front Teeth Be Crowned Together So the Looser One Can Have Better Support??

Yes, you can join two crowns together to gain support. You do have to realize that when crowns are joined together they can torque forces on each other that over time will make them even more loose. If its your easiest option for now, then you should do it but a long term plan may be to do an dental implant and keep teeth separate. Good luck. Dr. David Frey DDS