AAE recommended diagnostic terminology: the seven pulpal and six apical terms a referral letter should use, and the 2025 AAE/ESE draft that would replace them

What it says#

In 2008 the AAE held a consensus conference to standardize the diagnostic terms used in endodontics, and in December 2009 the Journal of Endodontics printed the result as a one-page table titled AAE Consensus Conference Recommended Diagnostic Terminology. It is not a guideline and grades nothing. It is a vocabulary, and it is the vocabulary an endodontist expects to read when a referral arrives.

The pulpal side has seven entries. Normal pulp is symptom-free and normally responsive to pulp testing. Reversible pulpitis is a clinical diagnosis based on subjective and objective findings indicating that the inflammation should resolve and the pulp return to normal. Symptomatic irreversible pulpitis and asymptomatic irreversible pulpitis share a definition, that the vital inflamed pulp is incapable of healing, and differ in their descriptors: lingering thermal pain, spontaneous pain and referred pain in the first; no clinical symptoms in the second, with the inflammation produced by caries, caries excavation or trauma. Pulp necrosis indicates death of the pulp, usually nonresponsive to testing. Previously treated means the canals are obturated with filling materials other than intracanal medicaments. Previously initiated therapy means partial endodontic therapy such as a pulpotomy or a pulpectomy.

The apical side has six. Normal apical tissues are not sensitive to percussion or palpation, with an intact lamina dura and a uniform periodontal ligament space. Symptomatic apical periodontitis is inflammation producing a painful response to biting, percussion or palpation, which might or might not come with a radiolucency. Asymptomatic apical periodontitis is inflammation and destruction of pulpal origin that shows as a radiolucency without symptoms. Acute apical abscess has rapid onset, spontaneous pain, tenderness to pressure, pus and swelling. Chronic apical abscess has gradual onset, little or no discomfort, and intermittent discharge through a sinus tract. Condensing osteitis is a diffuse radiopaque lesion, a localized bony reaction to a low-grade inflammatory stimulus at the apex.

The AAE's Fall 2013 Colleagues for Excellence issue is where those definitions turn into a chairside procedure. It lists the examination steps required to make an endodontic diagnosis: medical and dental history; chief complaint with duration, location, onset, stimuli, relief and referral pattern; clinical exam covering facial symmetry, sinus tract, soft tissue, periodontal probing and mobility, caries and defective restorations; pulp tests by cold, electric pulp test and heat; periapical tests by percussion, palpation and biting; radiographic analysis with at least two periapicals, a bitewing and, where indicated, CBCT; and additional tests, transillumination, selective anesthesia and a test cavity. It also insists that all testing be comparative, against adjacent or contralateral control teeth, and it works seven cases end to end, each ending in a paired diagnosis and a treatment. That pairing is the discipline the terminology exists to enforce: "pulp necrosis; chronic apical abscess," "previously treated; symptomatic apical periodontitis," "reversible pulpitis; normal apical tissues."

The list is now being rewritten. A steering committee formed by the boards of the AAE and the European Society of Endodontology, co-chaired by Alan S. Law for the AAE and Hal Duncan for the ESE, started work in July 2023 with a brief to account for advances in vital pulp therapy and to propose an updated way of classifying the diseased pulp. On July 17, 2025 the AAE posted the committee's two draft tables and a background statement for stakeholder feedback. The pulpal and pulp space table has nine terms: clinically normal pulp, hypersensitive pulp, mild pulpitis, severe pulpitis, pulp necrosis, inconclusive pulp status, previous regenerative endodontic treatment, previously initiated root canal treatment, and previously obturated root canal. The periapical table has eight: clinically normal apical tissues, apical hypersensitivity, localized symptomatic apical periodontitis, localized asymptomatic apical periodontitis, localized apical periodontitis with sinus tract, apical periodontitis with systemic involvement, healing apical tissue, and inconclusive apical condition.

Two changes matter most. First, "irreversible pulpitis" is gone, replaced by mild and severe pulpitis, each with a "secondary to" column naming the cause (moderate or deep caries, deep restoration with or without microleakage, trauma, cracked tooth, external cervical resorption, tooth wear or operator-induced). Severe pulpitis carries an explicit management line: depending on the severity of symptoms and objective findings, including intraoperative assessment of disease progression within the pulp space, pulpotomy, partial or full, or root canal treatment. That is the vital pulp therapy position written into the diagnosis itself. Second, the draft admits uncertainty as a category: inconclusive pulp status and inconclusive apical condition are terms for a tooth you cannot call, each with monitoring rather than intervention as the management line.

The draft is explicit about its own limits. The background statement declares no industry or commercial funding and no conflicts of interest, and says that despite better imaging and better vital pulp treatment outcomes, there remains a lack of advanced commercially available diagnostic tools and gaps in the understanding of endodontic disease, which limits the development of a classification in endodontics.

Who it applies to#

Everyone who writes a chart note or a referral. The AAE's own framing is that a universal classification exists to let educators, clinicians, students and researchers talk to each other, and both the AAE and the American Board of Endodontics recommend the terms across all dental disciplines and health care professions. In practice the audience inside an office is wider than the doctor: an assistant who charts the diagnosis and a front desk person who types the referral letter both need the vocabulary to be a closed list, not free text.

It does not reach periodontal diagnosis, which has its own staging and grading vocabulary, and it does not tell you what to do. The 2009 table is definitional only; the treatment implication lives in the definitions of irreversible pulpitis and pulp necrosis, both of which name root canal treatment, and in the 2025 draft's separate management column.

What changed#

For sixteen years, nothing. The 2009 list has been stable, reproduced in the Colleagues issue, the glossary and the case difficulty form, and it is still the operative vocabulary today. What changed in 2025 is that the AAE and ESE opened it, for a reason this directory's entry on the AAE vital pulp therapy position statement already flagged: that statement itself called for a review of the endodontic diagnostic terminology used to classify the severity of pulpal disease, because the treatment recommendation embedded in the words "irreversible pulpitis" no longer matches what the AAE says can be done for those teeth.

My own view: the practical change for a general office is smaller than it looks, and it is worth getting ahead of. The draft does not ask you to test differently. It asks you to stop treating the diagnosis as an instruction and start recording what you actually observed, which is the same discipline the vital pulp therapy statement asks for at the exposure.

Where the source is#

The link under the title is the AAE's one-page PDF of the recommended terminology as printed at Journal of Endodontics 2009, volume 35, number 12, page 1634; it downloaded and was read in full. The Fall 2013 Colleagues for Excellence issue, Endodontic Diagnosis, authored by Gerald N. Glickman and Jordan L. Schweitzer and copyright 2013 American Association of Endodontists, is a six-page PDF on the same site and was also read in full; it carries the AAE's usual disclaimer that practitioners must use their best professional judgment. The 2025 draft tables and the background statement are on aae.org's diagnostic terminology page, dated July 17, 2025 and jointly copyrighted by the AAE and the ESE, with an express reservation against reproduction, distribution or reuse; they were read in full and are quoted here only as term names and short definitional phrases. Note that aae.org answers automated download tools with a 403, so all of these were fetched through a browser-equivalent request. The AAE's Guide to Clinical Endodontics has its own download page on aae.org, dated May 20, 2019, but the file sits behind a scripted download button that could not be triggered here, so nothing in this entry comes from it.