Digital dental radiography uses electronic sensors instead of film to capture images of your teeth and jawbone, typically at a substantially lower radiation dose. Needing X rays is routine rather than alarming, and images are taken because roughly a third of dental problems, including decay between teeth and bone loss, simply cannot be seen by eye. Patients choosing a clinic with digital radiography get faster images, less exposure, and results they can see on screen immediately.
The purpose of imaging is not to find reasons to treat. It is to distinguish what needs treating from what can safely be watched.
Radiographs form part of a broader preventive dental care strategy, alongside examination, risk assessment, and home care advice.
They also guide decisions made at dental cleanings, because bone levels determine whether a standard clean or deeper therapy is appropriate.
In children, early images help identify deep grooves that would benefit from dental sealants before decay begins.
You can read about the practice philosophy and facilities on the about Ardagh page.
Patients new to the area often find the practice first through listings for a dental clinic in Barrie.
What Is Digital Radiography?
Digital radiography replaces photographic film with a solid state sensor or a phosphor plate. X rays passing through the tissues strike the sensor, which converts the signal into a digital image displayed on a monitor within seconds. Because sensors are far more sensitive than film, a diagnostic image can be produced with markedly less radiation.
Types of Dental Images
- Bitewing. Shows the crowns of upper and lower back teeth together, ideal for detecting decay between teeth and checking bone height.
- Periapical. Shows a whole tooth including the root tip and surrounding bone, used for pain, infection, and root assessment.
- Panoramic. A single broad image of both jaws, sinuses, and joints, useful for wisdom teeth, growth assessment, and general overview.
- Occlusal. A wider view of an arch, frequently used in children.
- Cephalometric. A side profile view used mainly for orthodontic planning.
Why Dentists Take X Rays at All
Clinical examination is essential but limited. A mirror and probe cannot see through enamel or through gum tissue.
- Decay starting between teeth where surfaces touch
- Decay developing beneath an existing filling or crown
- Bone loss from periodontal disease
- Infection or a cyst at the root tip
- Position and angulation of unerupted teeth
- Root fractures after trauma
- Retained root fragments
- Development and eruption sequence in children
Each of these is treatable when identified early and considerably more complicated once symptoms appear.
Digital Compared With Traditional Film
Film Radiography
- Requires chemical processing, taking several minutes
- Higher radiation dose for an equivalent image
- Cannot be adjusted for brightness or contrast once developed
- Physical storage needed, with risk of loss or degradation
- Chemical waste requires disposal
- Difficult to share with another clinician
Digital Radiography
- Image appears on screen within seconds
- Substantially lower dose for a diagnostic image
- Brightness, contrast, and magnification adjustable to aid diagnosis
- Stored electronically and comparable side by side across years
- No processing chemicals
- Easily transferred to a specialist or a new practice with your consent
- Can be shown to you and explained during the appointment
That last point is underrated. Being able to see a shadow of decay on a screen makes an informed decision far easier than being told about it.
How Often Should Dental X Rays Be Taken?
There is no fixed schedule that suits everyone. Frequency is a clinical judgement based on individual risk.
Lower Risk Patients
- No new decay for several years
- Healthy gums with stable bone levels
- Good home care and low sugar frequency
- Bitewing images often appropriate every two to three years
Higher Risk Patients
- History of repeated decay or multiple restorations
- Active periodontal disease
- Dry mouth from medication
- Smoking or vaping
- Orthodontic appliances
- Images may be needed every six to twelve months
Children in the active decay years are commonly imaged more often than low risk adults, because primary teeth have thinner enamel and decay progresses faster.
Radiation Safety Explained Honestly
Dental radiography uses ionising radiation, so it is prescribed only when there is a clinical question to answer. The principles applied are straightforward.
- Justification. Every image must have a clear diagnostic purpose.
- Optimisation. The lowest exposure capable of producing a diagnostic image is used.
- Collimation. The beam is restricted to the area of interest.
- Shielding. Protective aprons and thyroid collars are used where appropriate.
- Documentation. Reason, findings, and exposure are recorded.
- Review of prior images. Existing radiographs are checked before new ones are taken.
The dose from a modern digital bitewing is very small in absolute terms, and comparable to a short period of ordinary background radiation exposure. The relevant balance is that failing to detect progressing decay or bone loss carries its own significant risk.
Myths About Dental X Rays
Myth: X rays are taken to increase treatment
Imaging frequently reduces intervention by confirming that a suspicious area is stable and can be monitored rather than drilled.
Myth: You should refuse all dental X rays
Refusing imaging means decay between teeth and periodontal bone loss go undetected until they are advanced. That is a considerably greater risk than a low dose digital image.
Myth: Digital and film are the same dose
Digital sensors are far more sensitive, requiring markedly less exposure to produce a diagnostic image.
Myth: X rays are unsafe during pregnancy
Routine imaging is usually deferred during pregnancy, but urgent diagnostic radiographs can be taken safely with proper shielding when clinically necessary. Always tell your dental team if you are or may be pregnant.
Myth: One panoramic image replaces all others
A panoramic view is excellent for overview but lacks the fine detail needed to detect early decay between teeth. Bitewings remain the standard for that purpose.
What to Expect at the Appointment
- Metal jewellery, glasses, and removable appliances are set aside.
- A protective apron and thyroid collar are fitted where appropriate.
- A small sensor is placed inside the mouth, held either by you or a holder.
- The tube head is aligned and the exposure taken in a fraction of a second.
- The image appears immediately for review.
- Findings are shown to you and explained in plain language.
- Images are stored electronically for comparison at your next visit.
The most uncomfortable part for most patients is the sensor pressing against the palate or floor of the mouth, and this can be eased with smaller sensors or repositioning. Say something if it is uncomfortable, because there are options.
Modern Imaging at Ardagh Family Dentistry in Barrie
Ardagh Family Dentistry is a trusted Barrie dental clinic with a fully equipped, wheelchair accessible facility serving families of every age. Located in the Ardagh Bluffs area at Circle K Plaza, 225 Ferndale Dr. S., Unit 7, Barrie, ON L4N 6B9, Canada, it is set up as a genuine neighbourhood practice rather than a destination clinic.
The practice welcomes new patients and accepts CDCP patients under the Canadian Dental Care Plan. Dentistry with nitrous oxide is available for patients with dental anxiety, and the treatment range covers preventive care, sealants, digital radiography, cleanings, sport guards, extractions, root canals, teeth whitening, dentures, crowns, bridges, and night guards.
Every image is taken and interpreted by licensed dental professionals registered with the Royal College of Dental Surgeons of Ontario, which governs radiography standards, training, and record keeping across the province.
To arrange an examination, call +1 705-315-0219 or email info@ardagh.ca. If you have recent radiographs from another clinic, mention them when you book, because transferring them can sometimes avoid repeat imaging entirely.
Safety Disclaimer
This article provides general information and is not clinical advice. Radiographic imaging must be justified individually based on clinical need, and interval recommendations vary considerably between patients. Inform your dental team if you are pregnant, may be pregnant, have had recent imaging elsewhere, or have difficulty tolerating intraoral sensors. Digital health records contain personal health information and must be stored and shared in accordance with applicable privacy legislation.
Frequently Asked Questions
How much radiation is in a dental X ray?
A modern digital dental radiograph delivers a very small dose, broadly comparable to a short period of natural background exposure. Doses are minimised through collimation, high speed sensors, and shielding.
Can I refuse X rays and still be treated?
You can decline any procedure, but a clinician may be unable to provide certain treatments safely without imaging. Extensive restorative or surgical work planned without radiographs carries real diagnostic risk, and that will be explained to you.
Do children need dental X rays?
Often yes, because decay progresses faster through thinner primary enamel and eruption problems are invisible clinically. Frequency is based on the individual child’s decay risk rather than a fixed schedule.
Are dental X rays needed at every checkup?
No. Clinical examination happens every visit, while imaging is taken at intervals appropriate to your risk. Many low risk adults need bitewings only every two to three years.
Can my images be sent to a specialist?
Yes. Digital files transfer electronically with your written consent, which speeds up referrals and avoids duplicate exposure.
Conclusion
Digital radiography detects decay, bone loss, and infection that clinical examination alone cannot reveal, using a considerably lower dose than film. Imaging should always be justified individually rather than taken routinely at every visit. Ask to see your images and have them explained, because informed patients make better decisions.
