Contact Us Today at (949) 830-4101
We are conveniently located between Mission Viejo High School and La Paz Junior High!

Why Choose an "Orthodontic Specialist"?

SHN Orthodontics offers you Orthodontists, not simply general dentists. An Orthodontist is a dentist who has not only completed a graduate program in dentistry to receive their DDS or DMD (Doctor of Dental Surgery or Doctor of Dental Medicine), but has also gone through a competitive residency at a CODA-accredited Orthodontic program for an additional 2-3 years to be trained specifically in Orthodontics and Dentofacial Orthopedics.

self-ligating braces

Our Services








Imaging & More

Kristin Keller
Kristin Keller
We absolutely love Dr. Nissen and her staff!
Ray Thompson
Ray Thompson
This team is so Professional and polite in everything they do. Thorough and efficient
Lupe Brookhart
Lupe Brookhart
What a wonderful place. They made us feel right at home!
Shawna Carter
Shawna Carter
We love Dr Nissen and her staff! Extremely friendly office environment and quality of treatment has been amazing! Highly recommend this office for orthodontics!
Susan Hull
Susan Hull
It was rather surreal walking into the office. Both of my children had their orthodontics done 30+ years ago by Dr. Shanon Hilgers Nissen’s FATHER! So I knew I was in very good hands. The experience was absolute perfection from start to finish. This now Gammy of 5, is treating herself to pink braces and straight teeth. Thank you so much!!!!!

Our Story

A Family of Mission Viejo Orthodontists

Over 40 years ago Dr. Nissen's father, Dr. James Hilgers, established his Orthodontic practice at our current location. Dr. Nissen is a proud third-generation Orthodontist who enjoys the pleasure of delivering orthodontic treatment in her own unique way! Her hallmarks are great orthodontic vision, attention to detail, and a kind and communicative approach to practice. Dr. Nissen is a local product of St. Margaret's in San Juan Capistrano and after her education in The Bay Area and Boston, she returned to receive her Master's Degree in Orthodontics from Loma Linda University. We look forward to our journey with you!  

What Makes Us Different?

We love our patients and giving them superb care.

To say that we are patient-centric is an understatement. We exist to help you and take great pride in providing you with kind, gentle, thoughtful, and professional orthodontic care. Creating a smile that you are proud of is an honor for us and we enjoy every step of this journey with you!

We pride ourselves on communicating effectively with our patients.

We go the extra mile to ensure a transparent, honest, and well communicated orthodontic treatment. In practicality, this means that we have a "open operatory" policy. We want want you to see our work, understand our method, and to ask as many questions as you can so that you feel comfortable with your patient care. Parents-- we really encourage you to be chair-side with us asking questions and learning all you can about your child's treatment.

Office facility: relaxing, positive, friendly.

Our modern office is meant to be an oasis of relaxation during your visit. Leave your stress and worries at the door, enjoy a fresh coffee, a water, a magazine, or even a Mrs. Field's cookie hot from the oven (don't worry-- it will be our little secret!).

Rich 40+ year history in orthodontics.

Our family has been practicing orthodontics in this very office since the early 1970's. Imagine Dr. Nissen as a little girl watching her father, Dr. James Hilgers, proudly practice his trade. And then see Dr. Nissen as a teenager mixing orthodontic cement for self-ligating. The Hilgers Family and Mission Viejo Orthodontics have been a tradition for over 40 years and we are honored to carry the baton!

Friendly and helpful staff.

Our staff makes this practice what it is. They are talented, kind, friendly, and fun. They will treat you and your children with great respect and care and they just love what they do. And it shows in their work!

Cutting-edge, modern orthodontic technology that we use to treat you.

Great Orthodontics resides at the intersection of training, vision, and technology. We employ the best technology on the market from Invisalign, to the Damon System, to low radiation dental imaging. We invest in technology and your result and experience will directly be impacted by our commitment to that investment.

Meet Our Wonderful Staff



Registered Dental Assistant
Kim o.

Kim O.

Patient Support and Treatment Coordinator


Registered Dental Assistant


Financial Coordinator

Smile Gallery

Miles and Miles of Smiles!


Stay Connected

We look forward to meeting you and your family and helping you achieve a beautiful, healthy smile. Contact our Mission Viejo Orthodontic office to schedule your complimentary Orthodontic consultation. We are centrally located between Mission Viejo High School and La Paz Junior High and offer convenient appointment times to fit into any busy schedule. And, we'd love to connect with you on social media!