Digital X-Rays & iTero Scanning: Better Dental Diagnostics
- Jul 20
- 10 min read
Most people assume a dental visit means sitting through the same uncomfortable bite-wing films their parents endured. That assumption is outdated. Digital x-rays now reduce radiation exposure by up to 80 percent compared to traditional film, and iTero scanning eliminates the messy impression trays that caused so many patients to gag and leave with inaccurate results. At Stavanger Dental in St. John's, Newfoundland, these technologies are not optional upgrades - they are the standard of care that makes earlier diagnosis, better treatment planning, and more comfortable appointments possible for every patient who walks through our doors.
Table of Contents
Quick Takeaways
Key Insight
Explanation
Radiation reduction is substantial
Digital x-rays use up to 80 percent less radiation than traditional film x-rays, making them safer for children and adults requiring frequent imaging.
iTero scans are faster and more accurate than putty impressions
A full-arch digital scan takes roughly 2-3 minutes and produces a 3D model with sub-millimetre accuracy, reducing the risk of ill-fitting restorations.
Early cavity detection improves treatment outcomes
Digital x-ray software can flag early demineralization that film would miss, allowing intervention before a cavity requires a crown or extraction.
iTero Outcome Simulator lets patients preview smile changes
Before committing to Invisalign or veneers, patients can see a projected simulation of their results, which improves informed consent and satisfaction.
Digital records integrate with treatment planning software
Both digital x-ray files and iTero scan data are stored electronically, eliminating physical storage issues and enabling instant sharing with specialists.
No more retakes due to poor film development
Digital sensors provide immediate image feedback on-screen, so a suboptimal angle can be corrected instantly without a second radiation exposure.
Canadian Dental Care Plan patients benefit equally
Diagnostic imaging completed with digital technology is fully compatible with CDCP billing, meaning covered patients receive the same modern standard of care.
What Are Digital X-Rays and How Do They Work
A digital x-ray dentist setup replaces traditional silver-halide film with an electronic sensor that captures the image and transmits it to a chairside monitor within seconds. The sensor is smaller and more flexible than film, which matters enormously for younger patients and adults with small mouths or sensitive gag reflexes. The image appears on-screen immediately, and the dentist can zoom, adjust contrast, and annotate findings in real time while the patient is still in the chair.
In practice, this immediacy changes the conversation between dentist and patient. Instead of describing an invisible problem on a dark film held up to a light box, the clinician can point directly to the screen and walk the patient through exactly what is visible. That level of transparency is something patients who have experienced it consistently report as more reassuring than traditional film visits.
The radiation reduction figure bears repeating because parents in St. John's often ask about it directly: digital sensors require 50 to 80 percent less radiation than conventional film to produce a diagnostically usable image. For a child receiving bite-wing x-rays every 12 to 18 months, or for an adult requiring panoramic imaging to assess implant sites, that reduction compounds meaningfully over a lifetime of dental care.
What the Software Actually Does with the Image
Modern digital x-ray platforms do more than display a picture. Software tools can measure bone density variations, highlight areas of potential decay using colour mapping, and flag changes between consecutive x-rays taken months or years apart. A common mistake in older practices is treating the x-ray as a static snapshot rather than a data point to compare against a longitudinal record. With digital storage, every image is timestamped and retrievable, making that comparison automatic.
The data consistently shows that dentists using digital radiography with enhancement software detect interproximal caries (cavities between teeth) at earlier stages than those relying on film. Earlier detection almost always means a smaller, less invasive restoration and lower treatment costs for the patient.
Pro tip: If you are a new patient transferring from another dental office, ask that practice to email your digital x-ray files in DICOM format. Stavanger Dental can import them directly, avoiding the need for new imaging on your first visit unless clinically necessary.
iTero Scanning Explained: More Than a Digital Impression
iTero scanning uses a handheld wand equipped with structured light and optical sensors to capture thousands of data points per second as the clinician moves it across the teeth and gums. The result is a dimensionally accurate, full-colour 3D model of the patient's dentition that appears in real time on a nearby monitor. There is no impression material, no hardening time, and no risk of the impression pulling away from a deep margin and distorting.
For patients in St. John's who have previously avoided orthodontic consultations or crown work because of unpleasant impression experiences, this matters. The wand is light, the scan is painless, and the process is closer to having someone photograph your teeth than to the traditional tray experience. Most full-arch scans at our office are complete in under three minutes.
The Outcome Simulator Feature
One of the most clinically useful aspects of the iTero system is the Outcome Simulator, which allows the patient to see a projected digital representation of how their teeth would look at various stages of Invisalign treatment. This is not a cosmetic gimmick. It gives patients a realistic, data-driven preview that helps them make genuinely informed decisions about whether to proceed, which aligner option fits their goals, and what the expected treatment timeline looks like.
In practice, showing a patient their projected smile before asking them to commit to 12 to 18 months of aligner wear reduces treatment dropout and increases satisfaction at completion. That is an outcome that benefits both the patient and the practice.
"Digital impression systems like iTero have demonstrated significantly higher accuracy than conventional impression materials in full-arch scans, with studies reporting mean deviations as low as 57 micrometres in clinical settings." - Journal of Dentistry, peer-reviewed clinical research on intraoral scanning accuracy.
Comparing Diagnostic Technologies: Film, Digital, and 3D Scanning
Not all dental offices in St. John's operate at the same technological level. Understanding the differences helps patients ask the right questions when choosing a provider and helps them understand why their treatment plan may differ from what they experienced at a previous office.
Technology
Radiation or Discomfort Level
Diagnostic Capability
Traditional Film X-Rays
Higher radiation dose, requires chemical processing, retakes common
2D image only, limited contrast enhancement, no digital archiving
Digital X-Rays (Sensor-Based)
Up to 80% less radiation, instant capture, no chemical processing
2D with software enhancement, colour mapping, longitudinal comparison
iTero 3D Intraoral Scanning
Zero radiation, no impression material, no gag risk
Full 3D model, sub-millimetre accuracy, Outcome Simulator integration
The comparison above makes clear that film x-rays are an inferior diagnostic tool in virtually every measurable category. There is no clinical argument for preferring film over digital in a modern general dentistry setting. The remaining reason some offices still use film is cost of equipment transition, not patient benefit.
Pro tip: When comparing dental offices in St. John's, ask specifically whether they use digital sensors or film for x-rays, and whether they have an intraoral scanner for impressions. These two questions will tell you a great deal about how current their diagnostic approach actually is.
Clinical Benefits for Patients in St. John's
The clinical benefits of modern dental technology are not abstract. They translate directly into fewer surprises on the treatment plan, less time in the chair, and better long-term outcomes. For families managing multiple children's appointments alongside their own care, that efficiency matters.
Digital x-rays allow Stavanger Dental to identify bone loss around existing implants or teeth well before it becomes symptomatic. By the time bone loss is painful, it has usually progressed to a point requiring more complex intervention. Early radiographic detection changes that trajectory entirely.
Pediatric Patients and Radiation Safety
Children are more sensitive to ionizing radiation than adults because their tissues are still developing and they have more years of accumulated exposure ahead of them. The Canadian Dental Association's guidelines on pediatric radiography specifically account for this by recommending digital sensors wherever available. At Stavanger Dental, all pediatric x-rays are taken with digital sensors, and the frequency of imaging is calibrated to the individual child's caries risk, not a one-size-fits-all schedule.
A common mistake is assuming that because a child's visit looked the same as an adult's, the radiation exposure was identical. Digital technology makes it possible to use lower exposure settings for smaller patients, a setting adjustment that film cannot accommodate.
Implant Planning and Surgical Precision
For patients considering dental implants, the combination of digital x-rays and iTero scanning provides a level of pre-surgical data that significantly reduces intraoperative surprises. Digital panoramic and periapical films map available bone height and width. The iTero scan captures the soft tissue and adjacent tooth anatomy above the gumline. Together, these datasets allow the clinical team to plan implant placement with precision before the patient ever enters the surgical appointment.
How iTero Supports Invisalign and Restorative Work
Invisalign treatment at Stavanger Dental begins with an iTero scan rather than traditional impressions. The scan data is transmitted directly to Align Technology's manufacturing system, where each custom aligner tray is fabricated to the exact specifications of the patient's current dentition and the planned tooth movement sequence. There is no intermediary step of pouring a plaster model from an impression, which means there is no opportunity for dimensional error to enter the process at that stage.
For restorative work such as crowns, inlays, onlays, and bridges, the iTero scan gives the dental laboratory a digital file with margin detail that putty impressions often cannot capture, particularly in deep subgingival preparations. The result is restorations that fit accurately on the first seating appointment in a higher percentage of cases, which means fewer adjustment visits for the patient.
Monitoring Treatment Progress Over Time
One underused feature of the iTero system is progress scanning during Invisalign treatment. By scanning at each check-up appointment and comparing the current scan against the original and the projected final result, the clinician can identify cases where tooth movement is lagging the predicted schedule. This allows for early intervention, such as adding refinements or attachments, before the discrepancy becomes significant enough to require starting a new aligner series from scratch.
The data consistently shows that practices using progress scanning throughout Invisalign treatment achieve better occlusal outcomes than those relying on visual assessment alone. For patients in St. John's investing in orthodontic treatment, that monitoring capability protects their investment.
What to Expect at Your Appointment
New patients at Stavanger Dental who have not experienced digital x-rays or iTero scanning before sometimes arrive with expectations shaped by older dental experiences. The actual appointment is noticeably different. Digital x-rays are taken with a small sensor placed briefly in the mouth, and the images appear on the monitor beside the chair within seconds. The dentist reviews them with you immediately, pointing out relevant findings rather than disappearing to a separate room to analyze film.
If an iTero scan is part of your appointment, the wand is passed slowly across your teeth while you watch the 3D model build itself on a nearby screen. Most patients find this more engaging than uncomfortable. The scan itself takes two to three minutes. If you are there for an Invisalign consultation, the Outcome Simulator can be run during the same appointment, so you leave with a concrete visual of your potential results rather than a vague verbal description.
Patients covered under the Canadian Dental Care Plan should know that diagnostic imaging, including digital x-rays, falls within covered services under standard CDCP guidelines. Stavanger Dental accepts the CDCP, and our team can confirm coverage specifics for your particular plan before any imaging is taken.
Frequently Asked Questions
Are digital x-rays safe for children and pregnant patients?
Digital x-rays are significantly safer than film x-rays because they use up to 80 percent less radiation. For children, this lower dose is clinically meaningful given their developmental sensitivity. For pregnant patients, the standard approach is to defer elective x-rays until after delivery unless there is an urgent clinical need. When x-rays are necessary during pregnancy, digital sensors minimize exposure, and a lead apron with thyroid collar provides additional protection. Your dentist at Stavanger Dental will always confirm your medical history before taking any imaging.
How accurate is iTero scanning compared to traditional putty impressions?
Clinical studies published in peer-reviewed dental journals report that iTero scans achieve mean deviations from true tooth anatomy of under 60 micrometres in full-arch scans. Traditional putty impressions, by contrast, are subject to distortion from material expansion and contraction, patient movement during setting, and errors in the pour process. For crown margins and Invisalign fabrication, the digital scan consistently produces better-fitting results with fewer remakes.
Does iTero scanning replace the need for dental x-rays?
No. iTero scanning and digital x-rays serve different diagnostic purposes and are complementary, not interchangeable. The iTero scanner captures surface anatomy above and slightly below the gumline in three dimensions. Digital x-rays reveal internal tooth structure, bone density, root morphology, and pathology inside the tooth and below the bone crest. A complete diagnostic record typically requires both types of imaging depending on the treatment being planned.
How often do I need digital x-rays at a regular check-up?
Frequency depends on your individual caries risk, periodontal health, and history of dental work. The Canadian Dental Association guidelines recommend bite-wing x-rays every 12 to 24 months for low-risk adult patients and every 6 to 12 months for patients with active decay or a high caries risk. Children typically follow a similar risk-stratified schedule. Your dentist at Stavanger Dental will recommend a frequency specific to your clinical situation, not a blanket schedule applied to every patient identically.
Can I request an iTero scan if I am only having a cleaning done?
An iTero scan during a routine cleaning is not standard unless there is a clinical reason, such as monitoring tooth wear, planning a restoration, or starting an orthodontic consultation. However, if you are interested in Invisalign or want to see a baseline 3D record of your current dentition, ask our team at Stavanger Dental during your appointment. They can discuss whether adding a scan makes sense for your specific situation and what, if anything, would be involved in cost or coverage.
Is the iTero scan available for Invisalign consultations at Stavanger Dental in St. John's?
Yes. Stavanger Dental uses iTero scanning as the standard intake method for all Invisalign consultations. The scan replaces traditional impressions entirely and includes access to the Outcome Simulator so you can see a projected result before making any decisions. If you are considering Invisalign in St. John's, contacting Stavanger Dental to book a consultation will include the scan as part of that initial appointment.
Have you had a digital x-ray or iTero scan at a dental office in St. John's? Share what the experience was like and whether it changed how you think about your dental care.
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