2019-2020 American Board of Pediatric Dentistry Board of Directors

On May 26, 2019, The American Board of Pediatric Dentistry's (ABPD) sponsoring organization, American Academy of Pediatric Dentistry (AAPD), inducted the 2019/2020 ABPD Board of Directors at the AAPD Annual Session held in Chicago, IL.


Leila Younger, DDS, MS

Dr. Leila C. Younger, D.D.S., M.S. is in private practice in Arlington Heights and Crystal Lake, Illinois. She is a Clinical Assistant Professor of pediatric dentistry at The University of Southern California Ostrow School of Dentistry.

​Dr. Younger completed her residency at Children’s Memorial Hospital in Chicago and received a master’s degree from Northwestern University. She attended The University of Illinois College of Dentistry where she graduated with honors and was inducted into OKU. She completed her undergraduate degree in biology at the University of Illinois-Urbana/Champaign.

​Dr. Younger has been Board Certified since 1998 and served as an examiner for the Oral Clinical Examination and on the Examination Committee of the American Board of Pediatric Dentistry since 2005. She served on several councils and committees for the American Academy of Pediatric Dentistry from 1992-2004. She became an ADA Evidence Based Dentistry Champion in 2012 and is a member of the National Dental Practice-Based Research Network.

​Dr. Younger and her husband, Dr. Terry Younger, reside in Barrington, Illinois. They enjoy biking, hiking and travel. They are frequent visitors to the Los Angeles area where their two children reside.


E. LaRee Johnson, DDS, MS

Dr. E. LaRee Johnson graduated with honors from the University of Tennessee, College of Dentistry in 1996. She completed a 3-year pediatric dentistry residency and received a Master of Science degree at the University of North Carolina in 1999. Dr. Johnson has completed the Kellogg Leadership Institute and serves as adjunct faculty at the University of North Carolina.  After her board certification in 2001, Dr. Johnson mentored many colleagues to pursue board certification, helped review cases and prepare for site visits until 2006 when she became an Examination Committee member for the American Board of Pediatric Dentistry serving on the Oral Clinical Examination Subcommittee. Working on both arts A and B of the exam and serving as the Part B leader, OCE liaison, and ultimately ABPD director, she has contributed to the construction of the exam for several years as well as serving as an examiner. She took two years away from the OCE to teach an OCE prep course.

Dr. Johnson has been in full-time private practice for over 20 years.  She is the founder of Carolina Pediatric Dentistry, a multi-doctor, two-location practice in Raleigh, North Carolina and speaks nationally and internationally.  Professionally, Dr. Johnson foremost enjoys clinical pediatric dentistry.  Her effective practice management skills are simply a byproduct of ensuring a patient-centered practice model. 

Being a wife and mother of two children brings Dr. Johnson her greatest joy.  Her family’s hobbies include anything outside, travel, CrossFit and endurance sports.  Dr. Johnson and her husband have completed multiple Ironman triathlons, the Umstead 100 Mile Endurance Run, and together have the goal to complete a marathon in each of the 50 states before age 50 (including qualifying for the Boston Marathon).


Dorothy Pang, DDS, MS

Dr. Pang received her DDS degree from the University of Texas, Health Science Center in Houston, completed her residency training in pediatric dentistry and obtained her Masters of Science degree from the University of North Carolina at Chapel Hill. After receiving her board certification in 2006, she has been an examiner of the Oral Clinical Examination since 2008 and a part leader of the Qualifying Examination Subcommittee since 2010. 

A native of Hong Kong and studied in England, ​Dr. Pang received her initial dental education from King’s College, University of London. Upon graduation from dental school in London she served as a dental officer of the Hong Kong Government providing care in rural communities and working with dental therapists to treat elementary school children. This latter experience ignited her interest in Pediatric Dentistry.

Following her residency training and graduate studies at UNC Chapel Hill, ​Dr. Pang and her husband Peter moved to San Francisco where she served as a full-time faculty member in the Division of Pediatric Dentistry of the University of California, San Francisco and later became the graduate program director. 

​Dr. Pang's career has been a true mix of community dentistry, academia and private practice. For over 20 years, Dorothy has built a successful orthodontic and pediatric dental practice in San Francisco with Peter who is an orthodontist. She teaches part-time and remains an active and significant contributor to the residency program at UCSF serving as a Health Science Full Clinical Professor. Dr. Pang, Peter and their two sons, Jonathan and Benjamin, reside in San Francisco.


Gregory Olson, DDS, MS

Dr. Gregory Olson joined the UTHealth School of Dentistry at Houston faculty in late 2018 as professor and chair of the Department of Pediatric Dentistry. He is a dual-trained orthodontist/pediatric dentist who taught in both graduate and predoctoral programs at Loma Linda University in California, where he earned a DDS, certificate in pediatric dentistry and a master’s degree in orthodontics and dentofacial orthopedics. He also holds a BS in management and operations from Pacific Union College.

​Dr. Olson is certified by the American Board of Pediatric Dentistry, and as a newly appointed ABPD director, he is researching the impact the certification process and continued learning have on members and their patients. He completed a legislative fellowship with the American Dental Education Association and remains active with ADEA’s Legislative Advisory Council (current chair), building alliances that support oral health and dental education. He is a graduate of the ADEA/AAL Leadership Institute.

​He is also passionate about advocacy and held a Faculty Scholar appointment in the Institute for Health Policy and Leadership at LLU. While there, he led policy research projects ranging from hunger issues to opioid-prescribing practices.

Dr. Olson’s current research focuses on extracting and analyzing digital data related to clinical, educational and business processes. His purpose is to enhance individual and organizational decision-making to improve quality of life, with a global impact.

Dr. Olson was Board Certified in 2006 and has been involved with the ABPD since 2012. He has been an exam-item writer, part leader, and, most recently, chair of the Renewal of Certification Process Subcommittee. 



Dr. Marcio Guelmann is a professor, chair and former residency program director of the Department of Pediatric Dentistry at the University of Florida (UF) in Gainesville, FL. His DDS degree is from the Federal University of Parana, Brazil, in 1984 and his Certificate in Pediatric Dentistry is from the Hadassah Faculty of Dental Medicine in Jerusalem, Israel in 1988. While in Israel, Dr. Guelmann was in private practice and part-time academics for 10 years and served as president of the Israeli Society of Pediatric Dentistry from 1995 to 1998. In 2000, he completed a fellowship in pediatric dentistry at the University of Florida and joined UF as assistant professor.

Board Certified since 2006, Dr. Guelmann served as examiner for the Oral Clinical Examination (OCE) (2009-2017), OCE part leader (2016-17) and chair of the Oral Clinical Examination Subcommittee in 2018. He is a fellow of the ADEA Leadership Institute, a consultant and site-visitor for the Commission of Dental Accreditation and serves as executive director for the Florida Academy of Pediatric Dentistry. He is the author and co-author of over 50 manuscripts and book chapters and serves as reviewer for national and international pediatric dental journals.   


Man Wai Ng, DDS, MPH

Dr. Man Wai Ng is chief of the Department of Dentistry at Boston Children's Hospital and holds the DentaQuest Endowed Chair in Pediatric Oral Health and Dentistry at Boston Children’s Hospital.  She is Associate Professor of Developmental Biology (Pediatric Dentistry) at the Harvard School of Dental Medicine. Dr. Ng received her DDS degree from Stony Brook University, her MPH degree from the Harvard School of Public Health and her certificate in pediatric dentistry from Boston Children's Hospital/Harvard. She completed a general practice residency at the Booth Memorial Medical Center in Flushing, NY and a dental fellowship on the developmentally disabled at Helen Hayes Hospital in West Haverstraw, NY.   In April 2018, Dr. Ng received the Stony Brook School of Dental Medicine Distinguished Alumnus Award.

Board Certified since 1997, Dr. Ng has served as an examiner for the Oral Clinical Examination (2006-14) and as chair of the Qualifying Examination Subcommittee (2015-17) of the ABPD.  She has been honored to serve on the Board of Trustees (2010-13), as chair of the Council on Scientific Affairs (2003-06) and the Council on Postdoctoral Education (2007-10), and as a national spokesperson currently for the American Academy of Pediatric Dentistry.