header ruleheader rule
Dr. Ernesto A. Lee

Dr. Ernesto A. LeeDr. Ernesto A. Lee is the Director of the Postdoctoral Periodontal Prosthesis/Fixed Prosthodontics Program (Advanced Restorative Dentistry) and Clinical Professor at the University of Pennsylvania School of Dental Medicine.  Since its inception 52 years ago, the Penn Perio Prosthesis Program has remained at the forefront of teaching institutions, gathering an international reputation for its unique approach to the treatment of patients requiring advanced reconstructive therapy. 

Dr. Lee is the former Director of the Dental Implantology Center at Temple University School of Dentistry, the first of its kind in the Philadelphia Metropolitan Area.  He is additionally a Visiting Professor in the Advanced Aesthetic Dentistry Program at New York University.  As a recognized leader in the field of dental esthetics, Dr. Lee brings a wealth of innovation to our practice.  His areas of expertise include dentofacial esthetics, biomaterials, dental implants and multidisciplinary protocols. 

Dr. Lee is a native of Panama, where he completed his dental school studies and was class valedictorian.  He subsequently migrated to the United States to pursue specialty training at Penn, where he earned dual degrees in Periodontics and Periodontal Prosthesis/Fixed Prosthodontics. 

An accomplished author, Dr. Ernesto Lee counts with over twenty publications to his credit; which have appeared in the Journal of Practical Procedures & Aesthetic Dentistry (PP&AD), The Compendium of Continuing Education in Dentistry, The Journal of Contemporary Esthetics, and the Journal of Collaborative Techniques in Dentistry.  He has also contributed and written chapters for the textbooks “Aesthetic Restorative Dentistry”, “Implant Surgery and Prosthesis: A New Perspective”, and “A New Approach to Bone Regeneration: Plasma-Rich in Growth Factors”. 

Dr. Lee is additionally a member the editorial boards of several dental journals, serves as an industry consultant, and dictates continuing education courses throughout the United States, Europe and Latin America.   A sought-after speaker, he has lectured before the most prestigious organizations, including the American Academy of Esthetic Dentistry, the American Academy of Periodontology, the Academy of Osseointegration, and the Greater New York Academy of Prosthodontics. 

Taking advantage of his many professional and industry affiliations, Dr. Lee brings world-class Esthetic Dentistry to the Philadelphia Metropolitan area, often partnering with leading dental technicians from across the United States and Europe to offer his patients the highest levels of technical expertise heretofore associated with cosmetic dentistry centers in New York City and the West Coast.

Dr. Lee’s is a collector of fine wine, antique furniture and decorative arts.  He enjoys music and spending any spare time with his family.


Dr. LynAnn Mastaj

Dr. LynAnn MastajBy the time she was in 6th grade, Dr. LynAnn Mastaj dreamed of becoming an orthodontist.  She was born and raised in Holyoke, Massachusetts. While attending Holyoke High School, Dr. Mastaj was an All-American Athlete, playing varsity field hockey, basketball and tennis. In addition to graduating at the top of her class, she won several state competitions for speech and debate. Dr. Mastaj was inducted into the National Honor Society and won the Margret Highland award, a prestigious academic scholarship.

Dr. Mastaj subsequently attended  Wheaton College in Norton, Massachusetts to pursue her love of science, sports and art. The prestigious liberal arts college afforded her the opportunity to continue both her academic studies and her athletic career.  Dr. Mastaj was a chemistry major but she also studied  biology, studio art and art history. While attending Wheaton College Dr. Mastaj received the Caroline Cutler Metcalf Award for being an outstanding scholar-athlete. In 1983, she won the Massachusetts State and New England Regional Tennis Tournaments and was a participant in the NCAA Championship in Claremont, California. Dr. Mastaj served as the president of the Wheaton College Student Union and won the Senior Athletic Award. The Cum Laude graduate further realized her goal of becoming an orthodontist by enrolling in The University of Pennsylvania Dental School in Philadelphia, Pennsylvania.

Dr. LynAnn Mastaj attended the University of Pennsylvania School of Dental Medicine, where she earned her DMD degree (Doctor of Dental Medicine). During her dental school training, she gave up tennis to work as a dental assistant, serve as vice president of her class, participated in community outreach dental programs, and taught in the dental clinic.  In 1988,  The University of Pennsylvania  Dental School presented Dr. Mastaj with The International College of Dentists Award for Outstanding Achievement.

Upon completing her D.M.D., Dr. Mastaj was accepted into a general practice residency program at York Hospital in York, Pennsylvania, where she engaged in oral surgery research,  trained in emergency medicine, internal medicine and anesthesia.  Dr. Mastaj became certified in advanced trauma life support (ATLS) and sedation dentistry.

Dr. Mastaj received her post-graduate specialty training in orthodontics from Albert Einstein Medical Center in Philadelphia. In addition to receiving post doctoral graduate courses at the University of Pennsylvania, Dr. Mastaj participated in animal research on cleft palate bone grafting. During her residency she also published a pioneering article on infection control in orthodontics. Dr. Mastaj was a member of  The American Board of Orthodontics and The American Association of Orthodontists. In 2001, Dr. Mastaj was elected to Who's Who in Professional Women.

Dr. LynAnn Mastaj has has over twenty years of dental experience practicing, teaching and lecturing. Her areas of expertise include growth and development, preventive and interception treatment,  adult aesthetic orthodontics, orthognathic therapy (jaw surgery), and orthodontic-periodontal procedures (tooth and gum tissue alignment) and INVISALIGN (invisible braces)

A highly-skilled and personable orthodontist, Dr. Mastaj enjoys the art and science of creating beautiful smiles for both adults and children.   LynAnn and her husband Ernesto, have two beautiful children, Michael and Mackenzie, with whom she enjoys swimming, skiing and playing tennis. Her other passions, besides orthodontics include cooking, gardening, decorating and traveling.