Bonded tooth that was a peg is loose?

I had a peg tooth growing up(one of my lateral teeth). I eventually got the tooth bonded. For the last 3 years it has been causing problems. Since my peg tooth was so skinny, I have a very small root. Although my bonded tooth has made my tooth rounder and obviously not as tiny, only a small part of my tooth is actually attached to the gums. I recently got my gums cleaned bc they were inflammed. I was told I will need to get a porcelain veneer for the bonded tooth. Will my tooth still be loose?