An intraoral camera takes magnified colour photos of tooth and gum surfaces using ordinary light, while dental X-rays use a small dose of ionizing radiation to show what is hidden inside teeth and bone. They answer different questions. A camera photo cannot replace a radiograph, and your dentist may use both, one or neither depending on what needs to be checked.
Key Takeaways
- An intraoral camera shows surfaces: enamel, fillings, crown edges, gums and soft tissues. It uses no radiation.
- Dental X-rays show structures you cannot see, such as decay between back teeth, roots and the bone that supports teeth.
- According to the Canadian Dental Association, X-rays should be prescribed after a clinical exam and only when justified, with the dose kept as low as reasonably achievable.
- The two tools are complementary. Surface photos help explain and document; radiographs help find what is below the surface.
- Neither an intraoral photo nor an X-ray is a diagnosis on its own. Your dentist combines them with the exam and your history.
What is the difference between an intraoral camera and dental X-rays?
The core difference between an intraoral camera and dental X-rays is what each can "see." A camera records light that bounces off a surface, so it shows what the eye would see if it could get close enough. An X-ray passes through tissue, so it shows density differences inside teeth and bone, including areas the eye can never reach.
| Intraoral camera | Dental X-rays | |
|---|---|---|
| How it works | Tiny lens and light send a live colour image to a monitor | A low, controlled dose of ionizing radiation passes through tissue to a sensor |
| Radiation | None | Yes; justified and kept as low as reasonably achievable |
| Best at showing | Chips, visible decay, crack lines, worn fillings, crown edges, gum colour, plaque, soft-tissue spots | Decay between teeth or under fillings, roots, bone levels, infection at the root tip, impacted or developing teeth |
| Cannot show | Anything below the surface | Colour, surface texture and fine soft-tissue detail |
| Field of view | A small area at a time | Several teeth (bitewing, periapical) up to the whole mouth (panoramic) |
| How often used | Whenever a picture helps explain or record | Based on your risk and clinical need, not automatically at every visit |
| Main purpose | Showing, explaining and documenting | Finding and assessing hidden problems |
In short, the camera is about showing and the X-ray is about finding. That is why the question is rarely "which is better?" and usually "which answers the question we have today?"
What an intraoral camera can show
An intraoral camera is a small, pen-sized wand with a lens and a built-in light at its tip. As the dentist or hygienist moves it around your mouth, a magnified, real-time image appears on a screen. You can see exactly what the clinician is describing instead of trying to picture it.
Intraoral camera images may help show:
- visible stains, plaque or tartar on tooth surfaces;
- chips, worn edges or crack lines on the visible part of a tooth;
- the edges of fillings, crowns and other dental work;
- red or swollen gums, gum recession and other soft-tissue changes;
- a site being monitored, photographed at one visit and compared at the next.
A 2019 review in Clinical, Cosmetic and Investigational Dentistry describes intraoral cameras as useful for monitoring restorations, assessing plaque and calculus and documenting oral lesions, and notes that showing patients these images can reinforce home-care instructions.
The limit is built into the technology: what light cannot reach, the camera cannot show. An intraoral photo also covers only a small area at once, and saliva, fogging or limited opening can reduce the quality. Similar-looking surface changes can have different causes, so a photo still needs clinical context. Our guide to what an intraoral camera is covers the device in more detail, and Landmark Dental Care's intraoral camera page explains how it fits into exams at the practice.
What dental X-rays are used to see
Dental X-rays, also called radiographs, create images of teeth and the structures around them by passing a small amount of ionizing radiation through tissue to a digital sensor or film. Denser material, such as enamel and fillings, appears lighter. Softer areas, including decay and some types of bone loss, appear darker.
Different views answer different questions:
- Bitewing X-rays show the crowns of upper and lower back teeth together. They are commonly used to look for decay between teeth, where neither the eye nor the camera can reach, and to check bone levels between teeth.
- Periapical X-rays show a whole tooth from crown to root tip and some of the bone around it. They help assess pain, infection, trauma or a tooth being considered for treatment.
- Panoramic X-rays show both jaws in one wide image, which can help with wisdom teeth, jaw development and broader planning.
- 3D cone-beam CT (CBCT) is a separate, three-dimensional scan reserved for specific planning questions such as implants. It is not a routine checkup image. Our guide to dental CBCT scans explains when it may be recommended.
The Canadian Dental Association's position on X-radiation says radiographs should be prescribed by a dentist based on a clinical examination, not taken as a routine protocol, and that the dose should be kept "as low as reasonably achievable." The American Dental Association similarly advises that the need for and frequency of X-rays depend on each patient's history and risk. The CDA also notes that a healthy adult without recent cavities or problems probably will not need X-rays at every appointment.
X-rays have limits of their own. Most dental radiographs are two-dimensional, so overlapping structures can hide detail. They show shape and density but not colour or texture, and very early surface changes may be clearer on direct inspection. If you have questions about dose, our article on digital dental X-ray safety covers it in more depth.
Why the two tools are complementary
Surface imaging and radiographic imaging look at different layers of the same problem. Used together, they often give a clearer picture than either one alone.
Consider a few common examples:
- A dark groove on a molar. The camera shows the stain clearly. An X-ray may show whether decay has spread under the surface or whether the groove is only stained.
- An old filling with a dark edge. The camera shows the edge and any chipping. A bitewing X-ray may show whether decay is forming underneath it.
- A tooth that hurts to bite on. The camera may reveal a crack line on the crown. A periapical X-ray can help check the root and surrounding bone.
- Gum recession. The camera documents how much root is exposed and how the gum looks. X-rays can show the bone level that supports the tooth.
Using both tools supports four things:
- Correlation. Matching what is seen on the surface with what appears on the radiograph.
- Explanation. Showing you a close-up photo while describing an X-ray finding in plainer language.
- Records. Keeping visual and radiographic baselines to compare at later visits.
- Decisions. Clarifying whether monitoring, treatment or more testing makes sense.
Complementary does not mean both are needed every time. A camera image that looks dramatic still needs context, and an X-ray read without an exam can be misinterpreted. Diagnosis remains a professional judgment that combines history, exam, imaging when indicated and sometimes specialist input.
When one may be used without the other
Many visits use an intraoral camera without any new X-rays. Examples include showing you a visible chip, documenting a soft-tissue spot that is being watched, pointing out where plaque collects, or checking the edge of a crown that can be assessed by looking. If your recent X-rays are still adequate for the question at hand, new ones may not be needed.
Other visits call for X-rays even if no photos are taken. Pain, swelling, a knocked or broken tooth, a higher risk of cavities, a periodontal assessment or planning that depends on the roots and bone all may need radiographs. A camera cannot stand in for those views.
Some appointments use neither beyond a clinical exam and a cleaning. The simple question "Do we need a photo, an X-ray, both or neither today?" is more useful than assuming that more images always mean better care.
| Situation | Camera likely helpful? | X-ray likely needed? |
|---|---|---|
| Visible chip or worn filling | Yes | Sometimes, to check underneath |
| Suspected decay between back teeth | Rarely | Often (bitewing) |
| Toothache or swelling | Sometimes | Usually (periapical) |
| Watching a spot on the cheek or tongue | Yes, to document it | Usually not |
| Showing where plaque builds up | Yes | No |
| Planning an implant | Sometimes, for records | Yes; CBCT may be considered |
This table describes common patterns, not rules. Your dentist decides based on your exam and history.
Special situations - pregnancy, children and new patients
Pregnancy. An intraoral camera uses no radiation, so it carries no dose concern during pregnancy. For X-rays, the Canadian Dental Association advises that elective radiographs may be deferred until after pregnancy, while emergency or essential care should use the minimum number of images needed. Tell the team if you are or might be pregnant.
Children. Children's X-ray needs depend on age, risk of cavities and how their teeth are developing. The camera can help a child and parent see exactly where brushing is being missed, without any radiation. In Nova Scotia, the Children's Oral Health Program covers a routine exam and up to two X-rays a year for eligible children aged 14 and younger with a valid health card; check novascotia.ca for current details.
New patients. The CDA recommends asking a previous dentist for recent radiographs rather than routinely taking new ones when you change offices. If you are switching practices, ask your former office to send your X-rays and any photos. That can avoid repeat exposure and gives your new dentist a baseline.
Frequent X-ray worries. If you feel you are having X-rays too often, ask what question each set is answering. A good answer ties the image to your risk and your symptoms. You can also ask whether an intraoral photo could answer part of the question instead.
Coverage questions. Public and private plans treat X-rays and photos differently. As of 2026, the Canadian Dental Care Plan lists exams and X-rays among its covered diagnostic services; ask the office to confirm current participation and billing, and see our CDCP page for more.
How images support a conversation about care
Images are most helpful when they improve shared understanding. A useful discussion covers what the image shows, what remains uncertain and what the options are.
Questions that keep the conversation grounded:
- Is this a camera photo or an X-ray, and what can each show? Knowing the tool prevents treating a surface image as an internal diagnosis.
- What finding are you concerned about, and how sure are you? Ask whether the next step is monitoring, testing, treatment or referral.
- Would another image change the plan? Any extra imaging should have a clear purpose.
- What should I watch for at home? Link the finding to symptoms that should prompt a call.
- Can we compare this at my next visit? Saved photos and X-rays make follow-up comparisons possible.
Be cautious of any suggestion that a colourful close-up alone proves invasive treatment is needed. A visible spot can be stain, early decay, or an old repair that is still sound. It is reasonable to ask about alternatives, including watchful waiting when appropriate. Educational images should reduce confusion, not create pressure.
Dental imaging at a Truro family practice
Landmark Dental Care is a family general practice at 125 Queen St in downtown Truro, serving patients from Truro, Bible Hill, Colchester County and Central Nova Scotia. The practice lists the intraoral camera, digital X-rays and 3D CBCT imaging among the tools used when an exam calls for them.
In practice, that means your checkup may include a camera view of a specific tooth, a set of X-rays when your history and risk call for them, or neither. If you have X-rays from another office, bring the details, and let the team know if you are pregnant or have concerns about imaging before the visit starts.
FAQ
Can an intraoral camera replace dental X-rays?
No. An intraoral camera shows only what is visible on the surface, while X-rays show decay between teeth, roots and bone. They are complementary tools, and one does not stand in for the other.
Do intraoral cameras use radiation?
No, intraoral cameras use ordinary light, like a small digital camera. Dental X-rays do use ionizing radiation, which is why they are prescribed based on need and kept to the lowest dose that gives useful information.
Why do I need X-rays if my dentist already took photos?
Photos cannot show what is under the surface, such as decay between back teeth or problems at a root tip. If your risk or symptoms call for that information, X-rays are the tool that can provide it.
If my dentist shows me a camera image of a spot, does that mean I need a filling?
Not necessarily. A visible change can be stain, early decay that may be watched, or a sound older repair. Ask what the finding might be, how certain the assessment is and whether an X-ray or monitoring would help decide.
How often do I need dental X-rays?
It depends on your age, history and risk. The Canadian Dental Association says a healthy adult without recent cavities probably will not need X-rays at every visit, while people with higher risk may need them more often.
Next step
If you would like to understand how photos and X-rays each fit into your checkup, learn about technology-supported examinations at Landmark Dental Care. Call 902-893-2919 or contact the office to arrange a visit at 125 Queen St, Truro.
References
- Canadian Dental Association: Control of X-Radiation in Dentistry
- Canadian Dental Association: Dental Care FAQs
- American Dental Association: X-Rays/Radiographs
- U.S. FDA: ADA/FDA Guide to Patient Selection for Dental Radiographs
- Clinical, Cosmetic and Investigational Dentistry (2019): Clinical applications of intraoral camera to increase patient compliance - current perspectives
- Government of Canada: What services are covered in the Canadian Dental Care Plan
- Government of Nova Scotia: Children's Oral Health Program
This article provides general educational information and is not a diagnosis or a substitute for care from a dentist or other qualified health professional.
About this guide
This article was written and reviewed by the Landmark Dental Care Team at Landmark Dental Care, 125 Queen St, Truro, NS B2N 2B4. It is general patient education and is not a diagnosis or a substitute for an examination. If you have pain, swelling or a change in your mouth, call us at 902-893-2919 so a dentist can assess you.