I had a crown put in and in less than a year that tooth had cracked and then I had to get a root canal. When the dental assistant was taking the x-rays of my mouth she didn't even use the lead vest. The office had called me 1 hour before my scheduled appointment and asked me to come in early-which I could not leave work early and when I got to the office at my scheduled time I had to wait over 30 minutes because they obviously got someone else to come in early.