In 1977 I was one of Dr. Barker's first private patients in Rock Hill, SC. It is now 2023 and I still have 3 or the original 5 crowns he put in for me. I also had two fillings put in. The total charges came to $941. These 3 crowns are gold crowns and I have had no problems with them over the decades. Jean was his assistant. Thanks, Dr. Barker!