Excellent work done by Dr. Neurohr, even as a young dentist. He measured and installed a bridge and several crowns for me in 1981. Several years later, while living in Europe, I visited a dentist who brought every dentist and technician in the office to my chair side to visually observe the excellent work. Even other dentists have since commented on the quality. But, having the work done was extremely painful to my jaws, ergo 4 stars.