A really fine dentist..
I had two upper rear gold crowns done by Dr. Krill in 1974 which only just required replacement. My current dentist was amazed they were that old; he said they should be replaced about every 12-15 years.
His wife, Cindy Krill, is also really skilled as a hygienist, too. I was very disappointed when they moved away.
They met at USC Dental School, which is considered to be a fine dental institution in LA.