Meet our Orthodontists at NCOSO

With 10 locations across NC including Cary, Dunn, Garner, Greensboro, Hamlet, Raleigh, Southern Pines, and Winston-Salem, NCOSO has an office near you. Our Orthodontists offer services such as Traditional Braces, Ceramic Braces, and Invisalign while our Oral Surgeons offer Wisdom Teeth Removal, Dental Implants, & more! Find out more about our Orthodontists below.

Request an appointment with one of our expertly trained Orthodontists today or call us at 833-GO-NCOSO to speak to a patient services representative!

Dr. Tyler Hart Vector Photo

Dr. Tyler Hart

Dr. Tyler Hart – Orthodontist Bio


  • Doctor of Dental Surgery – Virginia Commonwealth University, 2009
  • Bachelor of Science in Microbiology – Brigham Young University, 2004

Certification & Licensure

  • Certificate in Orthodontics and Dentofacial Orthopedics – University of Rochester Eastman Institute for Oral Health, 2015
  • Certificate in Orofacial Pain and Temporomandibular Disorders – University of Rochester Eastman Institute for Oral Health, 2013

Memberships & Awards

  • Member of the American Association of Orthodontists, Southern Association of Orthodontists and North Carolina Association of Orthodontists
  • Completion of Invisalign Aligner Intensive Fellowship
  • Completion of Invisalign Master’s Course
  • BLS and AED certified
  • North Carolina Dental License
  • Member of Durham-Orange Dental Society and John Dilday Study Club


  • University of Rochester Eastman Institute for Oral Health Department of Orthodontics and Dentofacial Orthopedics
  • Brigham Young University Department of Microbiology and Molecular Biology


Dr. Tyler Hart was raised in the mountains of Utah and received a BS in Microbiology from Brigham Young University. He received his dental degree from Virginia Commonwealth University in Richmond, VA where he met his wife, Jana. He then practiced general dentistry in Texas for two years. He continued his education in Upstate New York with a two-year fellowship in Orofacial Pain and Temporomandibular Disorders at the University of Rochester. He stayed in Rochester for an additional two-year residency in Orthodontics and Dentofacial Orthopedics and now is thankful to call North Carolina home.

He is married with four adorable and rambunctious children, Faelyn, Lexi, Ellery, and Tate. He loves running, cycling, being outside camping, hiking with his family, and volunteering at church. Three things that most people may not know about him are he can play the William Tell Overture on his buccinator muscles, he was once vaccinated against Anthrax, and he won silverware and a trip to Portugal on The Price is Right. Come On Down!


Dr. Tyler Hart Funny photo

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Dr. Nathan Kryn

Dr. Nathan Kryn – Orthodontist Bio


  • University of Colorado Denver and Health Sciences Center School of Dental Medicine, Department of Orthodontics, Certificate in Orthodontics and MSD
  • State University of New York at Buffalo School of Dental Medicine, Doctor of Dental Surgery
  • North Carolina State University, Pre-dental Studies in Biology

Certifications and Licensure

  • Invisalign® Certification for Orthodontists
  • iTero 3D Digital Tooth Scanning
  • Cerec Ortho 3D Digital Scanning Course and Certification
  • ClearCorrect Certification
  • LingualCare iBraces Course and Certification
  • RMO Dual-Top Anchor TAD System Seminar and Workshop Certificate
  • SUNY at Buffalo SDM Department of OMFS Proficiency Certificate in Lasers in Dentistry
  • BLS for Healthcare Providers (CPR & AED) Certification
  • North Carolina Dental License


  • North Carolina Association of Orthodontists
  • Southern Association of Orthodontists
  • American Association of Orthodontists


  • University of Colorado Denver School of Dental Medicine, Department of Orthodontics – “Effect of sterilization on temporary anchorage devices: A preliminary study”


Dr. Nathan Kryn studied at North Carolina State University and went on to receive his Doctor of Dental Surgery degree from the State University of New York at Buffalo. He graduated first in his class with the highest honor of Summa Cum Laude.

Dr. Kryn was awarded his Orthodontic Certificate and Master of Science in Dentistry from the University of Colorado Denver. Throughout his educational career, Dr. Kryn’s academic excellence was rewarded with numerous awards and scholarships. During his Orthodontic residency training, Dr. Kryn participated in various studies involving the very latest advancements in orthodontics as well as completing a professional research project in the field of Biomaterials.

Dr. Kryn is a member of the American Association of Orthodontists, the Southern Association of Orthodontists, and the North Carolina Association of Orthodontists. During his training he received advanced certification in Invisalign clear braces treatment, training in The Damon System self-ligating orthodontic appliances and temporary anchorage devices (mini-screws), as well as attended numerous lectures on the latest advancements in orthodontics.

Dr. Kryn enjoys enhancing his orthodontic knowledge by pursuing the most advanced proven techniques the orthodontic profession has to offer. In return, Dr. Kryn is able to provide his patients with the best of care in a relaxed and compassionate manner. Dr. Kryn is actively involved with many church and community projects. He also enjoys recreational running, calisthenics, playing the piano, cooking and is a car enthusiast. Dr. Kryn is committed to his family and particularly enjoys spending time with his young nephews and niece.


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Dr. Rita McGrogan

Dr. Rita McGrogan – Orthodontist Bio



  • University of Pittsburgh School of Dental Medicine, Mechanisms of Tooth Eruption

Memberships & Certifications


Dr. Rita McGrogan spent 3 years at the University of Pittsburgh for her undergraduate studies where she excelled and gained early admittance to dental school.  She then attended the University of Pittsburgh, School of Dental Medicine where she graduated in the top 10 of her class and received several awards for her research in the mechanisms of tooth eruption. 

Having developed a passion for orthodontics, Dr. McGrogan went on to complete a 3-year orthodontic residency at the University of Maryland while also earning her Master of Science in Oral Biology. She then returned to Pittsburgh, PA where she went on to own her highly successful orthodontic private practice for over 15 years. 

Dr. McGrogan and her husband, Jeff, always knew their futures weren’t tied to Pittsburgh forever and after an extensive search fell in love with the Raleigh area. They and their 5 children (plus 2 dogs and 1 cat) have recently relocated to North Carolina and are thrilled to be here and to be part of North Carolina Oral Surgery + Orthodontics! 

Away from the office, Dr. McGrogan enjoys running, biking, gardening and is trying to become a golfer.  However, her greatest pleasure comes from spending time with her family and cheering them on in their (many) activities! 


Dr. Rita McGrogan | NC Oral Surgery + Orthodontics

Dr. Megan Wong

Dr. Megan Wong – Orthodontist Bio


  • Bachelors of Science, University of Toronto, Human Biology & Cell System Biology
  • Doctor of Dental Surgery, University of Toronto
  • Orthodontic Residency at Columbia University in New York


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Dr. Megan Wong was born and raised in Toronto where she studied Human Biology and Cell & System Biology at the University of Toronto. After being accepted into dental school after three years of her undergraduate education, she continued her studies at the University of Toronto to complete her Doctor of Dental Surgery degree (DDS), graduating top of her class. Following dental school, she moved to New York to complete a Master’s degree in Orthodontics at Columbia University.

Dr. Wong’s passion is restoring self-confidence and she sincerely believes that smiling is the outward display of happiness that connects us to others. Helping her patients, including children, adults and families find healthy perceptions of themselves, she knows that no single approach is the right one for every individual and so has been trained in a range of modalities including conventional braces, self-ligating braces, and Invisalign. 

Along with her passion for orthodontics, she also enjoys reading, traveling, dancing (a former hip-hop dance instructor), and spending her weekends exploring both the beaches and mountains of North Carolina.