What is a Periodontist?

Periodontics is a specialty of dentistry that focuses on the health of the supporting structures of your teeth. A periodontist has completed an additional three years of specialty training beyond the four years required for general dentistry. During this time they are trained in preventing, diagnosing and treating gum disease. Periodontists specialize in placing dental implants and they are also trained in performing cosmetic periodontal procedures such as crown lengthening surgery and gum disease treatment.


Dr. Dorion, Periodontist

Craig Dorion, DDS, MPH

Dr. Dorion is a native of Massachusetts and graduated from The University of North Carolina at Chapel Hill (UNC) in 2002 with a Bachelors of Science degree in Biology and a minor in Chemistry. He was a member of the Mens Varsity Basketball team at Brandeis University prior to relocating to Chapel Hill, NC.

Upon completion of 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. Dr. Dorion was chosen by his peers at UNC School of Dentistry to serve as class president for all four years of his general dental training. He continued advanced training with 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 his third year of Periodontics residency. He also worked as a general dentist prior to graduation 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 provide 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:

  • 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

Dr. Craig Dorion, located in Chapel Hill, Raleigh & Apex, NC, is a Periodontist who serves patients from Durham, Burlington & Raleigh, NC. We are looking forward to welcoming you to our office and encourage you to schedule your appointment today!

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Dr. Gandini, Periodontist

Liliana Gandini, DMD

Dr. Liliana Gandini earned her dental degree in Bogota, Colombia. In addition, she received her Doctor in Dental Medicine (DMD) degree from the University of Puerto Rico. She completed a two-year program in Advanced Education in General Dentistry (AEGD) as well as her post-graduate periodontal specialty training at the Eastman Dental Center, University of Rochester in 1993. During her periodontal training she was actively involved in several clinical research projects with emphasis in aggressive forms of Periodontitis and Guided Tissue Regeneration. Dr. Gandini served as clinical professor at the Eastman Dental Center and the University of Puerto Rico. She has published various scientific articles in peer-reviewed periodontal journals. Dr. Gandini has practiced periodontics and implant surgery since 1993. She is fluent in English and Spanish.

Dr. Gandini is 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 mandatory educational requirements of the specialty and who 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, cosmetic periodontal procedures, placement and repair of implants, ridge augmentation, sinus lift, canine exposures, gingival grafting including tunneling technique, atraumatic extractions and site preservation, crown lengthening and biopsies among others. Dr. Gandini uses the latest technology in 3D imaging and offers the alternative of oral sedation for those patients that need it.

Dr. Gandini lives in Chapel Hill with her husband, Dr. Pedro Santiago, craniofacial orthodontist. They have 2 children attending college. She enjoys tennis, golf music and travelling.

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Dr. Walters, Periodontist

Dr. Douglas Walters DDS

Doug Walters is a native of Missouri. He has been a North Carolinian since enrolling at Duke University where he graduated 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, N.C.

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 conducted research regarding the effects of sonic tooth brush 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 and 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 (LANAP), 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.

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Dr. John Tomasheski, DDS Family Dentist

Comprehensive Family Dentistry

John Tomasheski, DDS

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 3 consecutive seasons and the conference’s scholar athlete of the year his senior year.  He was inducted into the Virginia Wesleyan’s athletic hall of fame in 2012.

Dr. Tomasheski eared his DDS degree from the University of North Carolina – Chapel Hill, graduating with honors in 2007.  After graduation he completed a 1 year general practice residency with emphasis on 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, as well as the Orange County Health Department.

Upon completion of the general dentistry residency, Dr. Tomasheski moved to Philadelphia, which was closer to home as an associate dentist.  North Carolina was calling him back, and after 1 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 and sharing his knowledge to help others, in addition to building long-term relationships with his family of patients.   He brings over a decade of family dentistry experience with a complete dedication and joy of treating all ages like family with safe delivery and of the highest quality!

Dr. Tomasheski lives in Wake County with his wife Dr. Kimberly Tomasheski, DDS.  They have 3 children:  Emma, Chase, and Noah.  He enjoys spending time with his family, being outdoors gardening and grilling and running, as well as attending church and 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, Periodontist

Dr. Kim PhD, DMD

Dr. Kim obtained his Certificate in Periodontology and DMD degree from University of Pennsylvania School of Dental Medicine, and his PhD in Oral and Craniofacial Biomedicine from University of North Carolina at Chapel Hill.

He has more than 19 years of experience in periodontology and general dentistry. His clinical experience includes but not limited to soft tissue and bone grafting, crown lengthening, osseous f surgery, surgical and non-surgical periodontal disease treatment, and implant.

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 clinic. Before moving to North Carolina, he had worked as an associate general dentist and periodontist in private practice at Philadelphia. And before that, Dr. Kim was a 1st Lieutenant dental officer in South Korean army.

Dr. Kim was born in Australia. He had lived in Germany and South Korea. He speaks English, Korean, German, Japanese, and Chinese. He loves to ride his unicycle, read books, watch movies, and flaunts his hand skills with DIY home projects!

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Dr. Richard Chu, DDS Family Dentist

Comprehensive Family Dentistry

Richard Chu, DDS

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 and graduated from the University of North Carolina at Chapel Hill with a Bachelor of Science degree in Biology and a minor in ChemistryAs 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 be able 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, his care and attention to all of his patients, and his commitment to providing the best treatment options to better their oral health. 

Dr. Chu’s focus and passion in dentistry includes treating pediatric patients, performing all restorative procedures such as crowns and bridges, veneers, dentures/partial dentures, as well as 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 innovationsAs a life-long learner, he enjoys taking continuing education courses to best serve his patients. 


In his free time, DrChu enjoys lifting weights, practicing yoga, traveling to new places, trying new foods and working on cars! And of course, you can find him cheering on the Tarheels whenever they play! 

 Waka Kadoma, DDS, MS

– Retired 2019

dentist - Chapel Hill, NC

Dr. Kadoma was born in Japan, and also spent her early childhood there. She is fluent in Japanese. She then moved to Toronto, Canada with her family where she grew up.

Dr. Waka Kadoma received her Bachelor of Science Degree from the University of Toronto (U of T) in 1992 in Immunology. She also studied at U of T Graduate School in Immunology. She then earned her Doctor of Dental Surgery (D.D.S.) degree from Case Western Reserve University in Cleveland, Ohio in 1998. She attended the Periodontology department at the University of North Carolina, School of Dentistry from 1998-2001 where she received her specialty training in Periodontics and Implant surgery. In addition, while attending UNC, Dr. Kadoma conducted her Master’s thesis research (with world renowned Dr. Offenbacher) on the association between gum disease and heart attacks. She has a number of publications and has conducted seminars on this topic.

Dr. Kadoma is among the few percentage of periodontists in the world to be awarded a Diplomate status with the American Board of Periodontology. A Diplomate of the American Board of Periodontology is a periodontist who has made significant achievements beyond the mandatory educational requirement of the specialty. A Diplomate has been examined by a panel of internationally respected peers and awarded Diplomate status. Dr. Kadoma has received one of the highest recognitions of achievement afforded by the specialty. Dr. Kadoma achieved this accomplishment within one year of her graduation!
In addition to becoming a Board Certified Periodontist, Dr. Kadoma strives to keep abreast of the advances in dentistry and periodontic treatment. She has attended the Pankey Institute of Higher Dental Education to take courses in Interdisciplinary Comprehensive Patient Care and Interdisciplinary Implant Treatment Sequencing and Planning in order to promote comprehensive patient care and ensure excellent communication with your dentist so that your treatment will be delivered in a well-coordinated manner for an excellent result. Dr. Kadoma is dedicated to improving not only the oral health but also the overall health of her patients.

Dr. Kadoma also has been appointed to the adjunct faculty position at the Dental School at UNC–Chapel Hill, where she teaches periodontal residents, dental students and hygiene students. Dr. Kadoma is an active member of The American Academy of Periodontology, The Southern Academy of Periodontology, The North Carolina Society of Periodontology, the American Dental Association and the North Carolina Dental Association.

Dr. Kadoma lives in Chapel Hill, and enjoys endurance running; including training and competing in Ultra Marathons. She also enjoys cooking many different ethnic cuisines and spending time with her husband, Stephen Pieroni, DDS and their young son, Nicholas.

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