One of my veneers is feeling very loose. I have had it for a year now. Can the same veneer be reglued?

As long as the veneer still fits to your tooth, it can be recemented. The real issue is why it came loose in the first place. That should be looked into as well. 

Hi there - thanks for your question.  Please see your dentist as soon as you can to have your veneer recemented.  Depending on the reason why the veneer fell off - it can be easily recemented if it still fits and there is no recurrent decay.  In my office, this includes, microetching the veneer to remove any old cement, acid etching the tooth, bond resin and veneer cement.  The bite relationship is very important with veneers and you want to make sure that's checked when recemented.  Good luck!

Hi:If the veneer can be safely removed it can be recemented without any problem.  Please see a dentist right away.Best,Dr. Maddahi