Yes, dental implants and MRI scans are generally safe together. Titanium, the material most dental implants are made from, is non-magnetic and doesn't heat up or move during an MRI. What it can do is create a small amount of image distortion, called an artifact, on the scan near the implant. That's a technical issue for the radiographer to manage, not a safety risk for you, and it's worth knowing about before your scan so nothing catches you by surprise.
Key takeaways
- Titanium dental implants are considered MRI safe, they don't heat, move, or react to the magnetic field in a standard MRI machine.
- Implants can cause a susceptibility artifact, a local distortion or halo on the image, which mainly matters if the scan is of your head, jaw, or neck.
- Always tell your radiographer about any dental implants, crowns, or other dental metalwork before a head or neck scan, so they can adjust the scan settings if needed.
- Zirconia implants, less common than titanium, produce fewer artifacts on MRI but are used less widely.
- MRI safety for implants is different to metal detector or airport security concerns, titanium is non-ferromagnetic and generally doesn't set off standard detectors either.
Why titanium and MRI generally get along
MRI machines use strong magnetic fields and radio waves to build detailed images, mostly of soft tissue. The concern with any metal implant in the body is whether it's ferromagnetic, meaning strongly attracted to a magnet, since that's what can cause heating, movement, or interference in an MRI environment. Titanium, and the titanium alloys used in most dental implants, are non-ferromagnetic. Testing standards including those from ASTM International classify titanium dental implants as safe under standard MRI field strengths, without reports of the implant heating up or shifting position during a scan.
That's a different question to whether the implant will affect the image quality, which it can, depending on where the scan is focused.
Image artifact vs actual safety risk
This is the part that causes the most confusion, so it's worth separating clearly.
| Safety risk | Image artifact | |
|---|---|---|
| What it means | Whether the implant heats up, moves, or causes harm during the scan | Whether the implant distorts the picture near where it sits |
| Does titanium cause this? | No, titanium implants are considered MRI safe at standard field strengths | Yes, titanium can create a dark or bright halo on the image around the implant |
| Who it affects | You, in terms of physical safety during the scan | The radiologist reading the images, particularly for head, jaw, or neck scans |
| What's done about it | Nothing extra usually required | Radiographers can adjust scan sequences or angles to reduce the effect |
In practice, the artifact only really matters if the area being scanned is close to the implant, such as a brain, sinus, jaw, or neck MRI. For scans elsewhere in the body, like a knee or spine, a dental implant makes essentially no difference to the images.
What to tell your radiographer
Before any MRI, you'll usually be asked to fill out a safety screening form. It's worth being specific rather than just ticking dental work:
- Let them know you have dental implants, and roughly where, meaning which teeth or area of the jaw.
- Mention any other dental metalwork too, crowns, bridges, or a retainer with metal components, since these can also factor into artifact planning.
- If you're not sure exactly what you have, that's fine, mention that you've had implant treatment and let the imaging team follow up if they need more detail.
- If the scan is specifically of your jaw, sinuses, or the area around your mouth, flag this clearly in advance, since the radiographer may want to adjust the sequence used.
None of this is about safety clearance in the way, say, a pacemaker or certain aneurysm clips might require. It's purely about getting the clearest possible images.
A quick note on other implant materials
Most dental implants placed today are titanium or a titanium alloy, which is well studied and has a long track record with MRI. Zirconia implants exist as an alternative, sometimes chosen for cosmetic reasons or metal sensitivity, and they tend to produce fewer imaging artifacts since zirconia is a ceramic rather than a metal. They're used less widely than titanium implants and aren't automatically the better choice, the right material depends on your individual case, bone quality, and what your dentist recommends. If you're weighing up implants generally, our guide on dental implant costs in Sydney and our article on how long dental implants typically last cover the broader picture.
What about CT scans and X-rays?
It's worth noting that MRI is a different technology to CT scans and standard dental X-rays, and the concerns aren't the same. CT scans and X-rays use radiation rather than magnetism, so the will-it-move-or-heat-up question doesn't apply in the same way. Dental implants do show up clearly on X-rays and CT scans, which is actually useful, it's part of how implants are checked and monitored over time. If you'd like to understand more about implant planning imaging, our article on bone grafts and sinus lifts for dental implants covers how imaging is used before placement, and our guide on signs of dental implant failure explains what dentists look for at follow-up checks.
Frequently asked questions
Can I have an MRI if I have dental implants?
Yes, in general. Titanium dental implants are considered MRI safe. Let your radiographer know you have them before the scan.
Will my dental implant heat up during an MRI?
Titanium implants aren't expected to heat up significantly during standard MRI scans, they're non-ferromagnetic and behave differently to the metals that raise heating concerns.
Will my implant show up as a bright spot ruining the scan?
It can create a localised artifact near the implant, particularly on head or jaw scans. It doesn't affect the whole image and radiographers can often adjust for it.
Do I need to remove anything before an MRI if I have implants?
No, dental implants are fixed in the jaw and aren't removed for an MRI. Removable dentures or retainers with metal parts may need to come out, so check with the imaging clinic.
Are implant crowns the same as the implant itself for MRI purposes?
The crown on top is usually made from ceramic or a ceramic-metal combination, and this is generally also considered MRI safe, though it's still worth mentioning to your radiographer along with the implant.
Does this apply to full-arch implant bridges too?
Yes, the same titanium safety profile applies whether it's a single implant or a full-arch implant-supported bridge, though larger metal frameworks may create a bit more localised artifact.
Should I avoid getting implants if I know I'll need regular MRIs?
Not usually a reason to avoid implants altogether. It's a reasonable thing to raise with your dentist during planning, particularly if your MRIs are focused on your head or neck.
If you're considering implants and want to talk through what's right for your situation, including how it might interact with any ongoing medical imaging, the team at Lumi Dental offers a complimentary consult to go through your options. You can also see current offers on the deals page. If you're comparing implant-supported teeth replacement options more broadly, our article on implant-supported dentures vs regular dentures is a useful next read.
This article is general information and not a substitute for individual medical or dental advice. Always discuss your specific situation with your dentist and the imaging provider before a scan.
