I have been a patient of Dr. Obregon for many years. Whoever wrote a negative review is crazy. He is the best dentist I have ever found and the only one who backs all of his work up with a warranty. The work he did in my mouth is flawless and I experienced no discomfort what-so-ever. Peolpe frequently ask me about my teeth and I'm happy to recommend Dr. Obregon every time.