My daughter fell and hit her mouth when she was under 2. An upper front tooth was knocked out of place. Our pediatrician sent us to Dr. Udler and he was able to save the tooth. Although he warned us it might not stay in, 5 years later she still has the tooth and it looks like it will fall out on schedule.
Dr. Udler is an intense guy, which is fine with me. He is willing to delve deeply into the dental/medical issues, but be prepared to endure some technical language along the way.
Highly recommended overall.