About Dorion & Associates
Our doctors are committed to providing you with quality periodontal care when you need it.
Periodontics is a special type of dentistry that focuses on the health of the supporting structures of your teeth. A periodontist has completed an additional three years of training beyond the four years required for general dentistry. During these three years, periodontists are trained in the prevention, identification, and treatment of gum disease. Periodontists specialize in dental implants and other procedures, such as crown lengthening surgery and gum disease treatment.
Dr. Dorion is a native of Massachusetts. He graduated from The University of North Carolina at Chapel Hill (UNC) in 2002 with a Bachelor of Science degree in Biology and a minor in chemistry. He was also a men's varsity basketball team member at Brandeis University before relocating to Chapel Hill, NC.
Upon completing his undergraduate program, Dr. Dorion teamed up with a craniofacial research group studying the impact of cleft lip revision surgery on speech and lip function. His peers chose Dr. Dorion at UNC School of Dentistry to serve as class president for all four years of his general dental training. He continued his advanced training with a specialized focus in periodontics, dental implant surgery, and sedation in the Department of Periodontology at UNC School of Dentistry.
Dr. Dorion served as chief resident in the third year of his periodontics residency. He also worked as a general dentist before graduating from the periodontics program. He simultaneously completed a Master of Public Health degree in Health Policy and Management at the prestigious UNC Gillings School of Global Public Health.
Dr. Dorion is certified to administer IV, nitrous oxide, and oral sedation. He serves on advisory boards at both UNC-Chapel Hill and Wake Technical Community College. Dr. Dorion enjoys literacy outreach and volunteering at community safety net dental clinics.
Dr. Dorion is an active member in many local, state, and national dental organizations, including:
- Academy of Osseointegration
- American Academy of Periodontology
- North Carolina Society of Periodontists
- North Carolina Dental Society
- International Team for Implantology
- American Dental Association
- Southern Academy of Periodontology
- Durham-Orange County Dental Society
Located in Chapel Hill, Raleigh, and Apex, NC, Dr. Dorion serves patients from Durham, Burlington & Raleigh, NC. We look forward to seeing you at our office! Schedule your appointment today!
Fluent in English and Spanish, Dr. Liliana Gandini earned her dental degree in Bogota, Colombia. In addition, she received her Doctor of Dental Medicine (DMD) degree from the University of Puerto Rico. She completed a two-year program in Advanced Education in General Dentistry (AEGD) and her post-graduate periodontal specialty training at the Eastman Dental Center at the University of Rochester in 1993. During her periodontal training, she was actively involved in several clinical research projects with a focus on aggressive forms of periodontitis and guided tissue regeneration. Dr. Gandini served as a clinical professor at the Eastman Dental Center and the University of Puerto Rico. She has published various scientific articles in peer-reviewed periodontal journals and has practiced dentistry since 1993.
Dr. Gandini is a member of the American Dental Association, the American Academy of Periodontology, the North Carolina Dental Society, the North Carolina Society of Periodontists, and the Durham-Orange Dental Society. She was also recently appointed as Consulting Associate Professor of Surgery (Periodontics and Dental Implants) at Duke University. She is a Diplomate of the American Board of Periodontology (board certified). A Diplomate is a periodontist who has made significant achievements beyond the specialty's mandatory educational requirements and is certified by The American Board of Periodontology.
Dr. Gandini is passionate about her profession and enjoys providing periodontal health to her patients. She practices a full scope of periodontal procedures, including non-surgical and surgical techniques to treat all types of periodontal diseases. She also practices cosmetic periodontal procedures, placement, and repair of implants. This includes ridge augmentation, sinus lift, canine exposures, crown lengthening, biopsies, and gingival grafting including tunneling techniques, atraumatic extractions, and site preservation, among others. Dr. Gandini uses the latest technology in 3D imaging and offers oral sedation for patients who need it.
Dr. Gandini lives in Chapel Hill with her husband, Dr. Pedro Santiago, a craniofacial orthodontist. She also has two children attending college and enjoys tennis, golf, music, and traveling.
Doug Walters is a native of Missouri. Since enrolling at Duke University, he became a proud North Carolinian. He graduated from Duke University with a Bachelor of Arts degree in Political Science in 1987. Following graduation, Dr. Walters worked in corporate finance with Wachovia Bank and Trust Co. in Asheville, NC.
Heeding a call to serve others, Dr. Walters attended dental school at the University of Missouri, graduating with honors in 2000. He was elected as a class officer all four years. Encouraged by his interest in the interrelationship between oral health and overall body health, Dr. Walters completed his residency in periodontics and dental implant surgery, also at the University of Missouri. He researched the effects of sonic toothbrush energy on the microbiology of the mouth. Dr. Walters’ findings were published in the highly respected Journal of Clinical Periodontology. He has also participated in clinical research regarding the relationship between diabetes and gum disease.
Dr. Walters is committed to providing patients with the highest quality of care. He is a Diplomate of the American Board of Periodontology (board certified). This certification is held by only a small percentage of periodontists. It represents achievement beyond the mandatory educational requirements for the specialty.
Dr. Walters continues to advance his clinical knowledge to provide the most appropriate therapy options for patients. His practice focuses on surgical and non-surgical treatment of gum disease, including laser periodontal therapy, esthetic gingival treatment, periodontal bone regeneration, dental implant site development and placement, treatment of ailing implants, and diagnosis and treatment of oral lesions.
Dr. Walters is a member of the American Academy of Periodontology as well as local, state, and national dental societies.
Doug and his wife Julie are the parents of two sons attending college. Outside of dentistry, Dr. Walters enjoys service through his church, singing, scuba diving, tennis, and, occasionally, politics.
Dr. John Tomasheski is a native of New Jersey and graduated from Virginia Wesleyan University in 2003 with a Bachelor of Arts degree in Biology and a minor in philosophy. He was captain of the tennis team and an Academic All-American for three consecutive seasons and the conference’s scholar-athlete of the year as a senior. He was inducted into the Virginia Wesleyan’s athletic hall of fame in 2012.
Dr. Tomasheski earned his DDS degree from the University of North Carolina – Chapel Hill, graduating with honors in 2007. After graduation, he completed a one-year general practice residency. This residency emphasized medically compromised patient care, operating room treatment, and oral functional appliance therapy for head and neck cancer patients at UNC Hospitals at the University of North Carolina – Chapel hill. This experience included rotations at UNC Hospitals, the Durham VA Hospital, and the Orange County Health Department.
Upon completing the general dentistry residency, Dr. Tomasheski moved to Philadelphia, which was closer to home, as an associate dentist. However, North Carolina called him back, and after one year, he returned to provide general dental care in both Wake County and Johnston County. Dr. Tomasheski enjoys all aspects of general dentistry, especially continuing education, sharing his knowledge to help others, and building long-term relationships with his family of patients. He brings over a decade of family dentistry experience with complete dedication and joy. He treats all ages like family with safe delivery and the highest quality!
Dr. Tomasheski lives in Wake County with his wife, Dr. Kimberly Tomasheski, DDS. They have three children: Emma, Chase, and Noah. He enjoys spending time with his family, being outdoors, gardening, grilling, running, attending church, and joining Y-guides group activities. Dr. Tomasheski also still enjoys tennis and even competed and played in the US Adult Tennis Nationals Tournament Championship recently in 2019!
Dr. Kim obtained his Certificate in Periodontology and DMD degree from the University of Pennsylvania School of Dental Medicine and his Ph.D. in Oral and Craniofacial Biomedicine from the University of North Carolina at Chapel Hill.
He has more than 19 years of experience in periodontology and general dentistry. His clinical expertise includes, but is not limited to soft tissue and bone grafting, crown lengthening, osseous surgery, surgical and non-surgical periodontal disease treatment, and implants.
Dr. Kim is an adjunct professor at the periodontal department of UNC at Chapel Hill. He lectures courses and teaches grad residents and dental students in the clinic. Before moving to North Carolina, he had worked as an associate general dentist and periodontist in private practice in Philadelphia. And before that, Dr. Kim was a 1st Lieutenant dental officer in the South Korean army.
Dr. Kim was born in Australia. However, he has lived in Germany and South Korea and can speak English, Korean, German, Japanese, and Chinese. He loves to ride his unicycle, read books, watch movies, and flaunts his handcrafting skills with DIY home projects!
Dr. Richard Chu was born and raised in Madison, North Carolina, a small town where his family owns a locally loved Chinese restaurant. He later moved to Chapel Hill for school. He graduated from the University of North Carolina at Chapel Hill with a Bachelor of Science in Biology and a minor in chemistry. As a Tarheel through and through, he decided to stay in Chapel Hill and attend the UNC Adams School of Dentistry, where he earned his Doctor of Dental Surgery degree.
Dr. Chu loved the Triangle area so much that he decided to make it his home. He feels grateful to provide comprehensive dental health care to patients of all ages in the great state of North Carolina. His patients love him for his gentle touch and his commitment to providing the best treatment options to better their oral health.
Dr. Chu’s focus and passions in dentistry include:
- Treating pediatric patients
- Performing all restorative procedures, such as crowns and bridges
- Dentures/partial dentures
- Root canal therapy
As a member of the American Dental Association, the Academy of General Dentistry, and the North Carolina Dental Society, Dr. Chu loves staying up-to-date on the latest dental research and innovations. In addition, as a lifelong learner, he enjoys taking continuing education courses to serve his patients best.
Mission & Vision
Dorion & Associates is committed to achieving the best outcomes for each patient. We do this by using a long-term, team-centered approach to plan treatments while also promoting complete oral and systemic health.
To maintain our high level of clinical dental expertise by actively continuing our education in industry best practices and the most innovative technology possible.
To provide a widespread portfolio of dental services that diagnose, detect, treat, and prevent all possible problems for our patients, and therefore preserve their mouth function, comfort, aesthetics, and longevity.
To provide patients with enjoyable, exceptional service and not only satisfy their periodontal and implant needs, but do so in a calm, inviting environment with a team of fun, gentle, and smart professionals.
To surpass the expectations of our referring dental practices with open communication and assistance between all parties.
To act socially responsible and contribute to the dental community at large by offering education, volunteer efforts, and wellness programs.