Meet the Doctors



Dr. Ernest J. Dellheim obtained his Doctor of Dental Medicine degree from Temple University School of Dentistry, completed a general practice residency at Hartford Hospital, and received his certification in prosthodontics from Boston University. He is a published author.

Dr. Dellheim has been in private practice since 1976. He maintains professional memberships with the American Dental Association, Pennsylvania Dental Association, the American College of Prosthodontists, the Academy of Osseointegration, the Delaware Valley Academy of Osseointegration and the Main Line Dental Society.

Dr. Dellheim is an attending dentist in Temple University Dental School's Advanced Education in General Dentistry Program and has been named a "Top Doc" in the area of prosthodontics in both Main Line Today's Magazine and Philadelphia Magazine. Away from the office, he enjoys gardening, sailing, cycling, skiing and photography. He volunteers with the Lower Merion Conservancy, the Delaware Riverkeeper Network and participates in the Holocaust Survivors Oral Health Program, providing treatment without cost.


  • Top Dentist – Suburban Life Magazine
  • Top Dentist - Main Line Today Magazine
  • Top Dentist – Philadelphia Magazine



Dr. David B. Block, a native of Delaware, graduated from Temple University School of Dentistry summa cum laude in 1999. From there, he completed a 2-year hospital-based General Practice Residency at the Medical University of South Carolina. Wanting to return to the Northeast, Dr. Block took a faculty position at York Hospital in York, PA, and then entered into private practice where he has been for the last 15 years.

Settling in Newtown Square with his wife and two small children, Dr. Block joined this office in 2007 and is now a full partner. He has also rejoined his alma mater as a faculty member, teaching part time at Temple University School of Dentistry

Dr. Block, named one of Main Line Today's and Philadelphia Magazine's "Top Docs", holds memberships in The American Dental Association, Delaware/Chester Dental Society, Academy of Stomatology, Academy of Osseointegration, and the Main Line Dental Society. Dr. Block also annually participates in the Delaware County Give Kids a Smile Campaign. He participates in Dental Life Network’s Donated Dental Services program which provides pro bono care to patients who would otherwise be unable to afford treatment.  When away from the office, Dr. Block enjoys fishing, golfing, and spending time with his family.


  • Top Dentist – Surburban Life Magazine
  • Top Dentist - Main Line Today Magazine
  • Top Dentist – Philadelphia Magazine



Dr. Sheena Hauser was born and raised in Halifax, Nova Scotia. After graduating Dalhousie University, she attended Dalhousie School of Dentistry receiving her Doctor of Dental Surgery Degree. To elevate her knowledge and skills, Dr. Hauser completed a two-year General Practice Residency at the prestigious Carolinas Medical Center in Charlotte, North Carolina.

During that time, Dr. Hauser met her husband, Dr. Zachary Hauser. They have since settled in the Penn Valley area and have three beautiful children.

Professionally, Dr. Hauser has been in private practice for over 10 years. Her interests lie in general dentistry with an emphasis on restorative dentistry.

Dr. Hauser is a member of the Center City Study Club and participates in a number of professional committees. She belongs to the Delaware Valley Academy of Osseointegration, the Academy of Stomatology, and the Montgomery Bucks Dental Society. Dr. hauser has been named "Top Doc" in Main Line Today's Magazine.

Being the newest addition to Main Line Center for Dental Excellence, Dr. Hauser has provided new perspective and technology to the practice. We are very pleased to have her on board.


  • Top Dentist – Main Line Today Magazine