The Hang E.R.R.S.™️ Orthodontic Mentorship is for dentists and orthodontists who want to learn to prevent and reverse the consequences of mouth breathing and retractive mechanics.

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What we’ve learned from our patients is that pursuing the “perfect smile” isn’t a worthy goal if achieving it results in pain patterns, TMJ problems or sleep and breathing issues.
Doctor Hang has recognized and named a syndrome that describes most, if not all of the problems described above.

Extraction Retraction Regret Syndrome™ (E.R.R.S.™) is a constellation of esthetic, functional, and emotional signs and symptoms associated with retractive orthodontic procedures.

Here is what is included in your E.R.R.S.™ Mentorship:

1 or 2 2 day in-person meetings
  • Each meeting features case review and often features a guest speaker.

Monthly Zoom meetings each month (there is no in-person meeting)

  • These meetings are scheduled during months without in-person meetings and feature time to discuss cases with Dr. Hang and other members of the mentorship.
Case discussion and learning with Dr. Hang on the E.R.R.S.™ interactive virtual platform
  • The OrthO2Health community is thriving and very interactive on our dedicated platform. On this platform you can share photos, records and seek feedback from Dr. Hang. He usually responds within a day so you are being supported even when you are back in your practice.

Empowering peer to peer learning and interaction with other E.R.R.S.™  members.

  • You’re not alone. There is so much to learn from your peers who will also be sharing cases and their experiences.
Library of recorded in-person and Zoom meetings
  • All meetings, both in-person and those conducted via video conference, will be recorded and placed in our Library so that you can review them at your convenience.

Library of Resources on the virtual platform with videos, forms and articles

  • In the Library of Resources you’ll find videos, forms and articles which can be used in your practice.


for first 3 months


monthly after first 3 months

Member Spotlight

Kevin Adair DDS MSD

Kevin graduated from UCSF School of Dentistry in 1998 and practiced as a general dentist for nine years before realizing that orthodontics was his passion. He went back to school (University of the Pacific), earned a certificate in orthodontics and now practices in Northern California. In the short videos below, he talks about why he chose the mentorship and how it can help dentists and orthodontists who are passionate about practice growth & patient health.

Good News/Bad News

The Bad News is that E.R.R.S.™ is prevalent and largely undiagnosed. The GOOD NEWS is that E.R.R.S.™ is preventable & reversible!

A growing number of orthodontists & “ortho-dentists” are joining Dr. Hang in diagnosing this syndrome and offering treatments that patients are gladly paying for.

E.R.R.S.™️ treatments can help your patients and your bottom line

We are not practice consultants and do not like to focus on the economic aspects of orthodontics. However, clear aligner marketers and increased competition continue to hurt bottom lines. E.R.R.S.™ treatment techniques are in high demand worldwide. Our experience is that these patients will travel great distances to access them and willingly pay a fee reflective of the expertise required to complete the treatment successfully. If you are an orthodontist or dentist experienced in orthodontics, adding these treatments to your practice is a triple win for you, your patient and your bottom line.

Our mission is to move “orthodontic thinking” toward prevention and reversal of E.R.R.S.™

The Goals of E.R.R.S.™ Treatments Are To:

Protect and/or improve the airway

Reduce or eliminate pain patterns

Improve esthetics

Most E.R.R.S.™ techniques (including re-opening extraction spaces) move the teeth forward in the face. Our seminars and mentorship provide in-depth information about the nature of E.R.R.S.™ and comprehensive training in prevention & reversal of E.R.R.S.™

Meet E.R.R.S.™ Patients Who Have
Been Treated By Dr. Hang