Do Dental Implants Set Off Metal Detectors or Affect an MRI?

What are dental implants made of?

A dental implant is a small post placed in the jawbone to hold a replacement tooth. The FDA says most systems are made of titanium or zirconium oxide (zirconia, a white ceramic). Some use titanium alloys, gold alloys, cobalt-based alloys or other ceramic materials (FDA, 2021).

The post is only part of what sits in your mouth. A connector piece (the abutment) and the crown, bridge or denture on top may use other materials. That matters for scans, as you will see below. Our guide to the types of dental implants explains each part. For common questions, see our dental implant FAQs.

Will a dental implant set off airport or building metal detectors?

A single dental implant probably will not set off a walk-through detector. That is a fair guess, not a proven fact. The TSA's screening guidance does not mention dental implants, and we found no published study that tested them in detectors (TSA, undated).

Here is what the TSA does say. Travelers should inform the officer if they have any metal implants. If you alarm the walk-through detector, the officer will conduct a pat-down. The TSA also says people with internal medical devices such as pacemakers should not go through the walk-through detector (TSA, undated).

Detectors in office buildings vary by site and by setting. We found no source on how they treat dental implants, so the same advice applies: mention the implant if an alarm sounds.

What has research found about implants and metal detectors?

The closest evidence comes from orthopedic implants, not dental ones. In a 2007 study, 129 volunteers with 149 implants walked through a three-zone detector set to match TSA standards. Joint replacements were detected most often, while nails, plates, screws and wires were rarely detected (Ramirez et al., 2007).

The pattern: bulky joint replacements were found most often, and smaller hardware rarely was. A dental implant is much smaller than a hip or knee replacement. Still, this study did not test dental implants, so it cannot tell you what will happen to you. It is a reason for modest hope, not a promise.

How do metal bridges, denture frameworks and other implants differ?

Other metal in your body can behave differently from one dental implant. Joint replacements are the clearest example, since the 2007 study found that total joint prostheses routinely set off the detector (Ramirez et al., 2007). If you have a hip or knee replacement, plan for that device, not your teeth.

We found no published detection data for metal bridges or partial denture frameworks. A large metal framework may be a more plausible trigger than one small post, but that is our reasoning, not evidence. Treat it as an open question and mention any large dental metal if you are stopped.

If you have more than one kind of implant, tell the officer about all of them. Our page on implant-supported bridges covers how larger restorations are built.

Are dental implants safe in an MRI scan?

The FDA says it is not aware of any adverse events reported for MRI or X-ray procedures with dental implants. It advises telling providers and imaging technicians about your implants (FDA, 2021). That is reassuring, but it describes reports, not a promise about your own scan.

A 2018 review describes titanium as non-ferromagnetic. That means the scanner's magnet does not pull on it the way it pulls on iron or steel. The review adds that titanium contains traces of iron, which can drop out the signal near the metal. The studies it covered disagreed: one found minor artifacts, while another found severe blooming that caused diagnostic problems (Chockattu et al., 2018).

No reported harm does not mean no blur. The metal can still distort the picture. Our overview of how safe dental implants are covers other safety questions.

How much do dental implants blur MRI images of the head and neck?

Implants can create image artifacts, which are areas of distortion or signal loss near the metal. The FDA says dental implants can distort or interfere with images (FDA, 2021). Material and crown type both change how large the distortion is.

Sources: Dentomaxillofacial Radiology, 2020; Scientific Reports, 2022.

These were lab studies, not scans of living patients. In the 2022 study, crown metal also mattered on titanium implants. Pairs of cobalt-chromium or nickel-chromium metal-ceramic crowns made artifact areas larger than resin crowns did. Gold-platinum or silver-palladium ones made them smaller.

A 2022 systematic review found little evidence on dental implants and restorations, and what existed was inconclusive. It also found that blur depends on the material, its place in the mouth and the scan settings. For dental materials overall, diagnoses in the mouth, brain and face could be affected (Dentomaxillofacial Radiology, 2022).

What should you tell the technician before an MRI?

Tell the technician about anything in your body that is metal or electronic. RadiologyInfo says to tell the radiologic technologist about medical or electronic devices in your body. It notes that metal can cause artifacts on the image. It also advises bringing implant paperwork to the exam (RadiologyInfo, 2026).

Use this short checklist:

1. Say "I have dental implants" when you book the scan, not just at the door.

2. Name the area scanned if it is the head, neck, sinuses or jaw.

3. List crowns, bridges and any denture parts that clip or snap to implants.

4. Mention magnetic attachments. A 2018 review reports that magnet keepers attached to implants caused major artifacts and recommends removing them before MRI (Chockattu et al., 2018).

5. Bring your implant record or a note from your dentist.

How we approach this at Gardens

At Gardens Implant & Cosmetic Dentistry, implant planning starts with an exam and 3D imaging. These show your bone, nearby structures and the spot where a post would sit. Dr. Hans Almanzar, DDS, reviews the images with you and explains which implant materials and restorations are options for your case.

We record the implant type and the materials used in your chart. If you plan to travel or expect a scan, ask us for a copy of that information. We cannot predict what a specific detector or scanner will do, so we focus on giving you accurate paperwork. Ask us which implant materials we use for your case.

Who should get extra advice before a scan or flight?

Some people should check with their doctor before flying or scanning, not just read a dental guide. Examples include people with a pacemaker or another internal device. Others are people with magnetic overdenture attachments and people whose doctor ordered a head or neck scan near their implants.

• Pacemaker or other internal device: follow the TSA and your physician's advice, since the TSA says such devices should not go through the walk-through detector.

• Magnetic attachments: ask the technician whether they need to be removed.

• Head or neck scan near your implants: tell the ordering doctor so the radiology team can plan around possible blur.

• New pain, swelling or a loose implant: call the office before you travel, since these are dental problems, not scan problems. If swelling spreads to your face or neck, or you have trouble breathing or swallowing, go to an emergency room or call 911.

Frequently asked questions

Will a single dental implant set off a walk-through metal detector?

Probably not, but no one can promise it. The TSA does not list dental work in its screening guidance, and we found no study that tested dental implants in detectors. If an alarm does sound, the usual next step is a pat-down. Tell the officer about the implant first.

Is it safe to have an MRI with dental implants?

The FDA says it is not aware of any adverse events reported for MRI or X-ray procedures with dental implants. Implants can still blur nearby images. Before the scan, tell your doctor and the technician about every implant, crown, magnetic attachment or other metal in your mouth.

Do zirconia implants show up less on an MRI than titanium?

In one lab study using pig bone, titanium implants produced image artifacts of about 2.6 millimeters, while zirconia implants produced about 0.4 millimeters. That was a bench test, not a study of patients, so your own scan may differ. Ask your dentist which material you have.

Do I need a dental implant card when I travel?

The TSA page we reviewed asks you to tell the officer about metal implants and does not mention a card. Even so, a short note with your implant type, location and your dentist's name can save time at security or in an MRI suite. Ask your dental office for a copy of your implant record.

Can an MRI move or damage a dental implant?

A 2018 review describes titanium as non-ferromagnetic, so the scanner's magnet does not pull on it. The FDA is not aware of reported MRI adverse events with dental implants. Magnet keepers attached to implants are different. The review says they caused major image artifacts and should be removed before an MRI. Tell the technician about any magnetic parts.

Should I tell the dentist before a head or neck MRI?

It helps. Your doctor orders the scan and the technician runs it, but your dentist can confirm your implant material and crown types in writing. That detail helps the radiology team plan around image blur near your jaw. Bring any implant paperwork to the appointment.

Sources

1. U.S. Food and Drug Administration, "Dental Implants: What You Should Know", 2021, https://www.fda.gov/medical-devices/dental-devices/dental-implants-what-you-should-know

2. Transportation Security Administration, "Disabilities and Medical Conditions", undated (accessed October 13, 2026), https://www.tsa.gov/travel/tsa-cares/disabilities-and-medical-conditions

3. The Journal of Bone and Joint Surgery (American volume), "Detection of orthopaedic implants in vivo by enhanced-sensitivity, walk-through metal detectors", 2007, https://pubmed.ncbi.nlm.nih.gov/17403795/

4. RadiologyInfo.org, "How to Prepare for Your MRI Exam", 2026, https://www.radiologyinfo.org/en/info/how-to-prepare-for-mri-exam

5. Dentomaxillofacial Radiology, "Magnetic resonance imaging artifacts produced by dental implants with different geometries", 2020, https://pubmed.ncbi.nlm.nih.gov/32589480/

6. Scientific Reports, "Susceptibility artifacts induced by crowns of different materials with prepared teeth and titanium implants in magnetic resonance imaging", 2022, https://pmc.ncbi.nlm.nih.gov/articles/PMC8748466/

7. Dentomaxillofacial Radiology, "Artifacts in magnetic resonance imaging caused by dental materials: a systematic review", 2022, https://pubmed.ncbi.nlm.nih.gov/35348371/

8. Restorative Dentistry & Endodontics, "Unwanted effects due to interactions between dental materials and magnetic resonance imaging: a review of the literature", 2018, https://pmc.ncbi.nlm.nih.gov/articles/PMC6237727/