Meet Dr. Guinn

Pasadena Orthodontist - Dr. Karen GuinnDoctor Karen E. Guinn is a Board Certified Orthdontist, and has been providing orthodontic care and changing lives one smile at a time for over thirty years. Residents of Pasadena have come to know her as the “Green Street Dentist” since her flagship dental office is right on the iconic Pasadena road, Green St.

She recognizes that each patient has specific needs, and strives to provide the best orthodontic care for every one of her patients at either one of The Smile Agency’s convenient locations in Pasadena and W. Covina. Her goal is to give you a braces lift without a face lift, and to help you live life smiling!

Dr. Guinn believes the difference is in the details, she has treated all kinds of cases from simple crowding, to severe bite corrections. She provides orthodontics for all ages, so whether you are looking into Invisalign or braces for yourself or your children: Smile… the orthodontic exam is free!

As Dr. Guinn likes to say, “A Smile Never Dies…”


  • Dr. Karen Guinn attended University of California at San Diego where she received her undergraduate degree in Biology.
  • She graduated from Howard University College of Dentistry received her DDS and specialty training in Orthodontics
  • Dr. Guinn is an avid author and Instructor for Advanced Orthodontic techniques
  • Dr. Guinn is a Premier Invisalign provider in Pasadena & West Covina and has completed courses in Comprehensive Interactive Advanced Facial Reconstruction

Professional Affiliations

An Innovator in Orthodontics

Many people have been turned away from braces because they were told they needed jaw surgery, or teeth taken out. Aside from shaping healthy smiles for all ages, Dr. Guinn also provides care for all issues relating to orthodontics, such as TMJ therapy, snoring therapy, non-surgical and extraction-free orthodontics. She knows a beautiful smile is always in style, so our patient can feel comfortable knowing Dr. Guinn treats her patients like family.

With the technology in the Damon braces and Dr. Guinn’s advanced orthodontic techniques, Dr. Guinn has been able to transform peoples’ smiles who have turned away from braces, into a healthy, beautiful smile for life!

Reward yourself with a smile, call The Smile Agency today!

One More Personal Note…

In her free time, Dr. Guinn enjoys cooking, writing, and photography. She loves to travel with her three children, and loves to take photos of all her sights. She has traveled all over the country, but also internationally to South Africa and Costa Rica, for both business and pleasure. She believes in being a part of her community and giving back. In fact, she is the founder of Test Success, Inc., a Non-profit test-taking strategies program. Dr. Guinn is a member of the Pasadena City College Foundation, also a member of Jack and Jill of America Incorporated.