Dental Literature Watch · Guideline · Endodontics
AAE Revises Its Traumatic Dental Injury Guidelines
TL;DR
- The AAE has revised its trauma guidelines, published in the Journal of Endodontics in 2026.
- Scope: crown and root fractures, luxation injuries, and avulsion.
- The AAE frames prompt diagnosis as critical to preserving injured teeth — timing, not technique, is the emphasis.
- The revision incorporates elements of the International Association of Dental Traumatology's 2020 standards and current clinical evidence.
- The AAE is explicit that permanent retention of a traumatised tooth cannot be guaranteed, but that timely treatment maximises the chance of success.
⚠️ Read this before you read the rest
This page describes the document, not its individual recommendations
The guideline published without a structured abstract, so the specifics — splinting times, follow-up intervals, endodontic timing — are not reproduced here.
Everything in the section below is labelled IADT 2020, the framework the AAE revision draws on. Read the AAE document itself before following any specific protocol.
The guideline published without a structured abstract, so the specifics — splinting times, follow-up intervals, endodontic timing — are not reproduced here.
Everything in the section below is labelled IADT 2020, the framework the AAE revision draws on. Read the AAE document itself before following any specific protocol.
The trauma framework it builds on (IADT 2020)
- Avulsion is the only true dental emergency in this group — extra-oral dry time is what determines periodontal ligament survival.
- Replant immediately at the scene if possible. If not, the tooth travels in a physiologic medium — milk, saline, or the patient's own saliva — never in water and never dry.
- Luxation injuries are graded from concussion and subluxation through extrusive, lateral, and intrusive luxation, and the grade drives splinting and follow-up.
- Pulp survival depends on apex maturity. An open apex has a real chance of revascularisation; a closed apex usually does not.
- Follow-up is long. Trauma outcomes declare themselves over months to years, not at the emergency visit.
The one thing worth telling every parent and coach
Find the tooth, hold it by the crown, do not scrub the root.
Replant it if you can; otherwise put it in milk and get to a dentist now. Dry time is the clock that matters.
Find the tooth, hold it by the crown, do not scrub the root.
Replant it if you can; otherwise put it in milk and get to a dentist now. Dry time is the clock that matters.
💎 Insight — why a revision matters
Trauma is the area where general practice is most often the first responder
The patient with an avulsed incisor calls a general practice, not an endodontist.
Having a current, US-body-endorsed document to work from — rather than a memory of a lecture — is the practical value of this revision.
The patient with an avulsed incisor calls a general practice, not an endodontist.
Having a current, US-body-endorsed document to work from — rather than a memory of a lecture — is the practical value of this revision.
Alignment with IADT reduces a real source of confusion
Practitioners have been working from two overlapping sets of guidance with different splinting and review intervals.
Convergence means one protocol to teach the team and one emergency card to keep at reception.
Practitioners have been working from two overlapping sets of guidance with different splinting and review intervals.
Convergence means one protocol to teach the team and one emergency card to keep at reception.
⚡ Bottom line
- Avulsed permanent tooth → replant at the scene if possible; otherwise milk or saline, never water, never dry.
- Phone call from a parent → dry time is the outcome-determining variable. Get them moving.
- Any luxation → grade it, because the grade drives splinting and follow-up.
- Updating your practice emergency protocol → the 2026 AAE document is the one to read in full.
🧪 Questions
Tap an answer — instant grade, deciding line, and the trap.
A parent phones the practice. Her 9-year-old has just had an upper central incisor knocked out completely at a football match ten minutes ago. She has found the tooth. She asks what to do while driving in. What is the single most important instruction?
Deciding line: extra-oral dry time determines periodontal ligament cell survival, so immediate replantation is best and a physiologic transport medium such as milk is the fallback. Trap: scrubbing the root and transporting dry is the intuitive hygiene response and the one that destroys the ligament cells that replantation depends on; ice water is a well-meaning error, since hypotonic and freezing conditions damage those cells rather than preserving them.