Dr. Keller was my dentist back in Arlington Heights Illinois 10 years ago plus, and he did a great job, and was such a great guy. His entire old practice was as nice as they get, and their work and customer service were the best in the business. It's a shame that I am so far away now, as I still have 10-15 year old crowns in my mouth that Dr. Keller did back in the day! Anyway, Dr. Keller, if you read this, hope all is well with you and Sharon! Kind regards! -Mark R. Jahnke, United States Air Force - McGuire Air Force Base, NJ