The American Dental Association released its first major update to dental imaging patient selection recommendations in over a decade, published in January 2026. For Canadian dentists in Ontario and the GTA, the guidance reinforces an evidence-based principle the Royal College of Dental Surgeons of Ontario (RCDSO) has long championed: image when clinically justified, not on a fixed schedule.
As of April 2026, the new recommendations are prompting practices across Toronto, Mississauga, Brampton, and Vaughan to revisit their radiography protocols. The guidance is the first to address both planar dental radiography and cone-beam computed tomography (CBCT) in one framework, and it places renewed emphasis on the clinical examination as the starting point for every imaging decision.
What Changed in the New Imaging Recommendations
The updated guidance moves away from routine, interval-based radiographic exams and toward individualized prescribing based on patient age, dental development stage, caries risk, periodontal risk, and current clinical findings. Imaging is repositioned as an adjunct to diagnosis and treatment planning — not a screening tool deployed at every recall.
The core principles are straightforward, but implementation across a busy Ontario practice requires deliberate protocol changes:
- Every imaging order must be justified by a clinical finding, a specific diagnostic question, or a defined risk factor
- Review of the patient's medical and dental history, disease risk, and prior images precedes any new exposure
- Recommendations are stratified by age, development stage, and caries or periodontal risk
- Panoramic radiography is the recommended initial imaging modality for monitoring tooth eruption prior to orthodontic treatment and for assessing root alignment during treatment
- CBCT is reserved for cases where two-dimensional imaging cannot answer the clinical question
Why This Matters for Canadian Practices
While the recommendations come from the American Dental Association, they are directly relevant to dentists in Ontario and across Canada. The Canadian Dental Association (CDA) and the RCDSO both emphasize the ALARA principle — As Low As Reasonably Achievable — as the standard for radiographic prescribing. Health Canada's Safety Code 30 governs dental radiation equipment and operator protection, and its guidance aligns with the evidence-based approach now codified in the new recommendations.
For practices in the Greater Toronto Area, the shift carries three practical implications. First, documentation expectations rise. If you are deviating from a recall-by-interval approach, your clinical notes must clearly record the justification for each new exposure — the finding, the risk factor, or the diagnostic question you are attempting to answer. Second, treatment planning conversations with patients change. Many patients expect bitewings at every cleaning, so you will need to explain why clinical judgment now drives the cadence. Third, staff training matters more. Hygienists, assistants, and front-desk teams must understand the new framework so scheduling and billing templates reflect it.
Pro Tip: Update your recall templates within 30 days. Remove automatic bitewing scheduling at every hygiene visit and replace it with a risk-based protocol — low-caries-risk adults every 24 to 36 months, moderate-risk every 18 to 24 months, high-risk every 6 to 12 months. Document the risk category in the patient chart at every recall.
The CBCT Question for GTA Practices
CBCT adoption has accelerated across Toronto, Markham, and Scarborough over the past five years, driven by implant workflows, endodontic retreatment, and orthodontic planning. The new recommendations do not discourage CBCT use — they reinforce that the modality should answer a specific clinical question that two-dimensional imaging cannot resolve.
In practice, this means three things. Practices using CBCT for implant planning should document why conventional imaging was insufficient. Practices using CBCT for endodontic diagnosis should note the specific finding — persistent pain, suspected fracture, complex canal anatomy — that justifies the volume. And practices using CBCT for orthodontic screening should confirm the exam falls within current evidence-based indications rather than defaulting to volumetric imaging for every new case.
Updating Your Practice Protocols
The transition does not require new equipment. It requires a documented, consistent approach that every team member follows. A practical rollout looks like this:
- Week 1: Review the published recommendations and map them against your current radiographic protocol. Identify gaps.
- Week 2: Draft a one-page radiography prescribing protocol for your practice. Include caries risk categories, intervals for each category, and documentation requirements.
- Week 3: Hold a team meeting. Walk the hygienists, assistants, and billing team through the protocol. Discuss patient communication scripts.
- Week 4: Audit the first week of charts under the new protocol. Coach where documentation is thin.
Pro Tip: Create a two-sentence patient script hygienists can deliver when a patient asks why there are no X-rays today: "Current guidelines recommend X-rays only when there's a specific clinical reason. Your exam today showed no findings that require new images, so we're not exposing you to unnecessary radiation." Clear, confident, evidence-based.
Radiation Safety and Infection Prevention Still Matter
Reducing unnecessary exposures is one layer of radiation safety. The others — operator protection, equipment quality assurance, and proper shielding — remain just as important. Ontario practices should continue to follow RCDSO and Health Canada requirements for lead aprons, thyroid collars, operator positioning, and annual equipment quality checks. Infection prevention and control (IPAC) protocols for sensor sleeves, barrier films, and surface disinfection between patients remain unchanged.
Frequently Asked Questions
Q: Do the new ADA imaging recommendations apply to Canadian dental practices?
The recommendations are not regulatory for Canadian practices, but they reflect the current evidence base. The RCDSO, CDA, and Health Canada Safety Code 30 all emphasize the ALARA principle and clinically justified exposures, so the new guidance aligns closely with Canadian expectations. Ontario practices should use it to refine their own prescribing protocols.
Q: How often should bitewing radiographs be taken under the new guidance?
Intervals depend on caries risk. Low-risk adults typically require bitewings every 24 to 36 months. Moderate-risk patients fall in the 18 to 24 month range. High-risk patients — including those with active decay, dry mouth, or high caries history — may need them every 6 to 12 months. The risk category should be documented in the chart at every recall.
Q: What documentation is required when prescribing dental radiographs?
Your clinical note should record the specific finding, risk factor, or diagnostic question the radiograph is intended to address, confirm that prior images were reviewed, and indicate the patient's consent. RCDSO expects chart documentation that would allow another clinician to understand the clinical justification for each exposure.
EBIKO Dental will continue monitoring regulatory and evidence-based guidance updates that affect Ontario practices, including Health Canada Safety Code 30 revisions and RCDSO imaging position statements.