Meet Our Periodontists

Ted Weesner, DDS, MS

Dr. Weesner is a Periodontist and a Diplomate of the American Board of Periodontology, with twenty years of clinical experience in all phases of periodontal care. This includes treatment of periodontal disease, gum tissue grafting and implant treatment. His experience working with restorative specialists has given him expertise in all phases of implant therapy including complex case management, aesthetic treatment and care of implant complications.

Dr. Weesner was raised in Texas and graduated from the University of Texas at Austin. Satisfying his desire to travel and see other parts of the world, he attended the University Of Minnesota School of Dentistry and graduated with a Doctor of Dental Surgery Degree. He joined the US Navy in order to travel further and received more advanced training in a hospital-based General Practice Residency at the National Naval Medical Center in Bethesda, Maryland. For the next few years he served as a general dentist, providing care for the Navy and Marine Corps and other service members in Okinawa, Thailand and South Texas. This included a remote assignment providing care for refugees in Cuba. While still on active duty, he completed a Periodontal Residency Program at the University of Texas Health Science Center in San Antonio.

Dr. Weesner finished his career with the Navy at Whidbey Island, Washington, and moved to Portland starting a solo practice in West Linn in 2003. He then joined with his wife, Dr. Reva Barewal, a prosthodontist, to found Fusion Dental Specialists at its current location. Since 2012 he is a provider at the Portland VA Medical Center where he provides periodontal and implant care for veterans, an experience he finds highly rewarding. In addition to clinical care Dr. Weesner has performed research in the bioactivity of bone grafting materials and growth factors as well as in implant stability and early implant loading. His varied career and his experience working with both specialists and general dentists have given him vast experience in managing complex care and working with other providers to find the best solutions to sometimes challenging treatment. His patient-first approach means he works with people to find the solution that works best for the individual needs of each patient.

Dr. Weesner is a member of the American Academy of Periodontology, the Academy of Osseointegration, the West Coast Society of Periodontists, the American Dental Association and the Clackamas County Dental Society. He spends much of his free time helping Reva to raise their brilliant high-schoolers, Shail and Jasmine. He loves the outdoors including cycling, running and hiking.

Lillian Nguyen, DMD, MS

As a Periodontist, Dr. Lillian Nguyen specializes in the management and treatment of periodontitis, replacement of teeth with dental implants, procedures related to dental implants such as bone grafting and sinus augmentation, esthetic soft tissue (gum) grafting, and treatment of peri-implantitis. Dr. Nguyen strives to provide all her patients with high quality, evidence-based treatment while maintaining a patient-centered approach.

Prior to her dental education, her background includes a Bachelor of Science in Biochemistry from the University of Portland. Dr. Nguyen then obtained her Doctorate in Dental Medicine from Oregon Health & Science University in 2017, and then received a Certificate in Periodontics and Master of Science in Periodontics from OHSU in 2020. In addition to clinical training at OHSU, her research focused on the role of dental plaque bacteria in the early development of peri-implant diseases, and aims to identify the optimal interface between implants and crowns that may lead to prevention of peri-implantitis. Her research is currently in preparation for publication to peer-reviewed journals and will be presented nationally and internationally.

During her periodontal residency at OHSU, Dr. Nguyen treated patients from diverse cultural backgrounds, and with various levels of complexity in dental needs, ranging from simple to highly complex esthetic cases requiring multidisciplinary care. As part of her training, she also regularly provided care to veterans at the Portland VA Medical Center, which greatly enhanced her experience in managing patients with extremely complex medical histories. Dr. Nguyen is proficient in the utilization of a fully digital workflow for dental implant surgical planning, ensuring precise implant placement and minimally invasive, short surgical appointments. Her specialty allows for close collaboration with general practitioners as well as other specialists, resulting in optimized comprehensive care for patients. Dr. Nguyen is a member of the American Academy of Periodontology, the Academy of Osseointegration, the American Dental Association, and the Oregon Dental Association.

A Portland native, Dr. Nguyen enjoys spending time outdoors, visiting local wineries, traveling, and staying active and running with her husband, Patrick. With a background in performing arts, Dr. Nguyen has a great appreciation for music and dance and can be found reigniting her passion at local dance studios.

Yota Stathopoulou, DDS, DMD, MS, PhD

Dr. Yota Stathopoulou is a Periodontist and a Diplomate of the American Board of Periodontology. She specializes in the treatment of periodontal disease, cosmetic periodontal procedures, advanced bone grafting, placement of dental implants, and treatment of implant complications. Whenever appropriate, she utilizes minimally invasive techniques and sedation to ensure that her patients are comfortable during and after therapy. As a member of a multi-specialist team, she is able to offer same-day implants and restoration for extensive cases, as well as state-of-the-art treatment for highly esthetic cases.

Dr. Stathopoulou holds a Doctorate in Dental Surgery from the National and Kapodistrian University of Athens, Greece and a Doctorate in Dental Medicine from the University of Pennsylvania. She received a certificate in Periodontics from the University of Louisville and completed a Master of Science and PhD in Microbiology and Immunology at the same institution.

After working for several years in a multi-disciplinary specialty private practice in her native city of Athens, Dr. Stathopoulou relocated to Philadelphia in 2012 to assume a full-time faculty position at the University of Pennsylvania where she served as the Director of Predoctoral and Postdoctoral Periodontics, and as the Assistant Dean for Clinical Affairs. In 2019, Dr. Stathopoulou was recruited by Oregon Health & Science University, where she is currently Associate Professor and Director of the Advanced Education Program in Periodontics.
Dr. Stathopoulou has published in peer-reviewed journals, lectures nationally and internationally, and has been the recipient of several prestigious scholarships and awards. Her clinical research focuses on the non-surgical treatment of periodontitis and periimplantitis, and has been supported by industry and the National Institutes of Health; her basic science research focuses on host-bacterial interactions and their role in the pathogenesis of periodontal disease.

Dr. Stathopoulou has trained hundreds of dental students and residents while maintaining an active clinical practice throughout her academic career. In 2020 she joined Fusion Dental Specialists in Happy Valley, sharing Dr. Barewal’s and Dr. Weesner’s vision for excellence. Dr. Stathopoulou is committed to providing evidence-based and patient-centered care, and aims to serve as a resource for the local dental community.

Dr. Stathopoulou lives in West Linn with her husband, Kostas, and their very active preschooler, Eirene. As a family, they love hiking, skiing, and exploring the nature of the Pacific Northwest, while Yota and Kostas also enjoy visiting the wineries and farm-to-table restaurants of the Willamette Valley.

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