Edward S. Lee, DDS, is currently teaching at the UCSF Postgraduate Endodontic Clinic. Dr Lee is a recognized innovator in the field of endodontics. He invented and patented the MTA Pellet Forming Block over 20 years ago. The MTA Block is still in production and sold worldwide. He has lectured nationally and internationally about the MTA Pellet Forming Block technique and has published articles in peer-reviewed journals. He also participates in Dental Humanitarian Projects in Suqian and Chengdu, China.