Dental Implants After Head and Neck Radiation or Cancer Bone Drugs: A Guide for San Antonio-Area Patients

If you finished radiation for a head and neck cancer, or you receive a bone-strengthening drug as part of cancer care, losing teeth afterward raises a hard question: are dental implants after radiation, or while on those drugs, a reasonable idea at all? Patients from San Antonio, New Braunfels, Schertz and Boerne ask us this, often after hearing a flat "no" or a quick "sure" somewhere else. The honest answer sits between those two.

This guide is for the after side of cancer care. If your oncologist has asked for a dental check before radiation, chemotherapy or a bone drug starts, read our guide to dental clearance before cancer treatment, transplant or major surgery first. Here we cover what happens later: how radiation and bone-modifying drugs change the risk of jaw surgery, what current guidelines say about implants, the tooth-replacement options that avoid surgery in high-risk bone, what records to collect from your oncology team, and how an evaluation works when you travel from the San Antonio area to our Hutto or Katy office.

Regional Implant Centers does not have a San Antonio office. Patients from the area travel to Hutto or Katy, and this article is general education, not a diagnosis or a promise that implants will be right for you.

The short answer

Some cancer survivors can have implants, and some should not. The deciding factors are how much radiation reached the exact part of the jaw where an implant would go, which bone drug you take and at what dose, your cancer outlook, and whether a tooth-replacement option without surgery would work as well. International cancer-care guidelines advise avoiding implants in jaw bone that received high radiation doses when another option exists, and avoiding elective implant surgery during active cancer-dose bone-drug therapy unless a specialist and your oncology team review the case together. Neither is an absolute ban. Both mean the decision has to be made with your cancer doctors, not around them.

Two different jaw risks: radiation and bone-modifying drugs

Radiation and bone drugs both make jaw bone heal poorly after surgery, but they work differently, carry different risks, and are managed by different rules. It helps to know which one applies to you, because many survivors have had one and not the other.

Osteoradionecrosis (ORN) is bone damage after radiation. Radiation that kills cancer cells also injures the small blood vessels and bone-forming cells in the jaw. The bone can stay alive for years but heal badly if it is cut, as in an extraction or implant surgery. In ORN, the bone becomes exposed through the gum and does not heal. Medication-related osteonecrosis of the jaw (MRONJ) looks similar in the mouth but has a different cause. Drugs that slow bone turnover, mainly bisphosphonates such as zoledronic acid and the antibody denosumab, can keep the jaw from remodeling and healing normally after surgery. By definition, MRONJ applies to people who have not had radiation to the jaws, so the two are diagnosed and handled separately.

The rules in this article are for cancer-related radiation and cancer-dose drugs. Osteoporosis doses of the same drug families carry a much lower risk. If that is your situation, our articles on full-arch implants in your 70s and 80s and implants with diabetes or other medical conditions cover it.

After head and neck radiation: what decides whether implants make sense

The single most useful piece of information is the radiation dose that reached the specific area of your jaw where a tooth needs replacing. Your radiation oncology team has it, and a careful implant plan cannot be made without it.

Radiation is not spread evenly through the jaw. With modern techniques, a tumor at the back of the tongue may send a high dose through part of the lower jaw while the upper jaw or the front of the mouth receives much less. The 2024 ISOO-MASCC-ASCO guideline on osteoradionecrosis, endorsed by the American Association of Oral and Maxillofacial Surgeons, tells dental teams to review the radiation plan, including the dose to the upper and lower jaws, before finalizing a dental plan. It describes a dose of 50 Gy or more to the jaw as the high-risk range and notes that the risk is lifelong. It also warns that the front of the lower jaw can be at risk even when the highest dose went further back.

That is why two survivors with the same diagnosis can get different advice. One may have a low-dose area where implants are a reasonable option. Another may have every possible implant site inside a high-dose zone.

What the research shows

Implants placed in irradiated jaws fail more often than implants in healthy bone, and a small share of patients develop ORN. Many implants still last. The numbers below come from systematic reviews, not from our own patients.

• A 2021 systematic review and meta-analysis in Clinical Oral Investigations pooled studies with more than 1,600 implants placed in irradiated patients. Implant survival was about 92 percent in irradiated patients compared with about 97 percent in patients without radiation, over an average follow-up of a little more than three years. ORN occurred in about 3 percent of irradiated patients.
• The same review found that implants in grafted bone did worse, and that placing implants during the original cancer surgery was linked to more implant failures and a higher ORN risk than placing them later. Implants placed within the first 12 months after radiation failed more often than those placed later, but waiting 12 months did not clearly change the ORN risk. An average dose above 60 Gy did not clearly change the results, which shows that a single dose number does not settle the question for an individual site.
• A 2023 review in the British Dental Journal summarized earlier pooled data showing implants in irradiated bone were more than twice as likely to fail, with survival around 84 percent compared with 95 percent in non-irradiated bone, and an ORN rate with implants of about 3 percent.

The ISOO-MASCC-ASCO guideline says implants in high-risk zones should be avoided unless there is no other way to restore function. Where implants are the only realistic route back to chewing and speaking comfortably, it accepts that the quality-of-life benefit may outweigh the ORN risk. That is a decision for you and an experienced surgical team, with the radiation dose in front of everyone.

Is there a safe waiting period after radiation?

No proven safe window exists. Waiting does not reset the bone, and in high-dose areas the risk does not go away with time. Some patients are told to wait six months or a year after radiation. That waiting period gives the mouth time to recover from the acute side effects of treatment and gives the cancer team time to confirm early results. It does not make high-dose bone safe for surgery. One study discussed in the 2024 guideline found ORN after extractions became more common the longer it had been since radiation. The 2021 meta-analysis found that implants placed more than 12 months after radiation survived better, but waiting did not clearly lower the ORN risk.

In practice, timing depends more on your cancer status, your surveillance schedule and how your mouth has recovered than on a date on the calendar. Ask your oncologist when they would be comfortable with elective dental surgery, and whether any further cancer treatment or scans are planned.

Precautions you may hear about

If surgery in irradiated bone goes ahead, your surgeon and physicians may use extra precautions. Current evidence supports some and not others, and the prescribing choices belong to your treating doctors.

• Antibiotics before and after surgery: the 2024 guideline makes a weak recommendation for them around extractions or other surgery in high-risk bone.
• Antiseptic mouth rinses: suggested before and after surgery in high-risk zones.
• Pentoxifylline with vitamin E: the guideline lists this as an option a clinician may consider, with weak evidence. It is a prescription decision, not something to start on your own.
• Hyperbaric oxygen (HBO): the guideline does not recommend routine HBO before dental surgery to prevent ORN. In the HOPON randomized trial it cites, ORN occurred in 6.4 percent of patients who had HBO and 5.7 percent of those who did not. Some surgeons still discuss HBO for selected situations, so ask why if it is suggested.

Being told you need HBO for every procedure, or being told precautions make ORN impossible, are both reasons to ask more questions.

Protecting the teeth you still have after radiation

For many survivors the best way to avoid jaw surgery in high-risk bone is to keep their own teeth healthy, using daily prescription fluoride, frequent dental visits, and repairs instead of extractions where possible.

Radiation often damages the salivary glands. Less saliva means more decay, sometimes fast and along the gum line, and more infection. The National Institute of Dental and Craniofacial Research advises people who have had head and neck radiation to talk to their dentist about fluoride gel and to do daily jaw-opening exercises to help prevent jaw stiffness. The 2024 guideline gives a strong recommendation for daily prescription-strength fluoride for survivors with dry mouth. The British Dental Journal review suggests recall visits about every three months for many irradiated patients.

When a tooth in a high-dose area starts to fail, the guideline suggests looking at alternatives to extraction first, such as a root canal, a crown or a filling, because extraction is itself one of the main triggers for ORN. That is worth knowing before anyone suggests removing all remaining teeth to "start fresh" with implants. In irradiated bone, that plan is not routine and needs the dose map and a specialist opinion.

On cancer-dose bone-modifying drugs

If you receive zoledronic acid, pamidronate or denosumab at cancer doses, guidelines advise against elective implant surgery during active treatment. Exceptions are made only after an experienced dental specialist and your oncology team weigh the benefits and risks together.

These drugs protect the skeleton when cancer has spread to bone or in conditions such as multiple myeloma, and they reduce fractures and other bone complications. Their benefit to your overall health usually far outweighs the jaw risk, which is why the answer is careful dental planning rather than simply stopping the drug.

The 2019 MASCC/ISOO/ASCO guideline on MRONJ reports that the condition occurs in roughly 1 to 9 percent of patients with advanced cancer receiving these drugs. It cites estimates of 1.6 to 14.8 percent after a tooth extraction in cancer patients on intravenous bisphosphonates. A 2014 safety letter on denosumab at the cancer dose (120 mg, sold as Xgeva), issued with the UK and European regulators, reported a confirmed jaw osteonecrosis rate in clinical trials of 1.1 percent in the first year, 3.7 percent in the second year and 4.6 percent per year after that. Risk rises with how long you have been on the drug.

What the guidelines say about implants and bone drugs given for cancer:

• The MASCC/ISOO/ASCO guideline recommends against elective dentoalveolar surgery, which includes implants, during active cancer-dose bone-drug therapy. It allows exceptions when a dental specialist experienced with MRONJ has reviewed the benefits and risks with the patient and the oncology team, for example when oral function cannot be restored any other way.
• The International Team for Implantology (ITI) consensus says that with high-dose bone drugs, implant placement in your own bone can be considered only after a rigorous risk evaluation. It lists the factors: no alternative to implants, a specialized center, cooperation with the prescribing oncologist, strong maintenance, and a patient who understands the specific risks. It suggests straightforward placement without bone grafting where possible.
• On "drug holidays": the MASCC/ISOO/ASCO guideline found too little evidence to support or reject pausing the drug before dental surgery and leaves it to the treating physician. The ITI consensus does not recommend a drug holiday for implant placement. Never stop or delay a dose on your own; stopping can raise your risk of fractures and other bone problems.

If you already have implants and then start a bone drug

Healthy implants do not need to be removed before or during bone-drug therapy, but they need excellent cleaning and regular checks. The ITI consensus states that existing implants without disease pose no risk of necrosis and should not be removed. The concern is infection around implants, known as peri-implantitis, which can expose bone. Our guide to peri-implantitis treatment for San Antonio-area patients explains the warning signs. Tell every dental office you visit that you take a bone-modifying drug, even if you have no natural teeth.

Contact your oncology team and your dentist promptly if you notice exposed bone, pain, swelling, drainage, numbness, or teeth or implants that feel loose. The regulators' denosumab letter specifically asks patients to report loose teeth, pain or swelling during treatment.

Tooth-replacement options that do not need implants in high-risk bone

Well-made dentures remain a sound choice for many survivors, and both of our offices provide traditional dentures, snap-on implant overdentures and fixed full-arch bridges. Which of these fits you depends on where the safe bone is.

The British Dental Journal review notes that well-fitting dentures rarely cause ORN, and that fitting dentures within about six months after radiation, compared with after a year, is unlikely to change outcomes. Fit matters more than usual. Pressure sores under a denture can expose bone, and ill-fitting dentures are a listed risk factor for MRONJ. Dry mouth also makes dentures harder to keep in place, so expect more adjustments and relines than a person without radiation would need. If your denture already rubs or moves, our guide to loose dentures and the options from a reline to implants walks through the steps.

When implants are considered, the plan may be built around the safer bone. A lower snap-on overdenture on a small number of implants placed in a lower-dose zone is one way some teams limit surgery in high-risk bone. Whether that is possible depends on your dose map, bone volume and health. For a side-by-side look at the three main full-arch choices, see All-on-X vs. implant dentures vs. traditional dentures.

Two more notes:

• After cancer surgery that removed part of the upper jaw, a removable prosthesis called an obturator can close the opening and carry replacement teeth. These are usually made by a prosthodontist working with the cancer surgery team.
• Dr. Dan Holtzclaw and Dr. Enrique Tabarini at Regional Implant Centers perform zygomatic and pterygoid implants for selected patients with severe upper-jaw bone loss. These implants anchor in bone further from the teeth, but that bone can also have received radiation. They are not a way around radiation risk, and the same dose review applies. Our article on sinus lift vs. zygomatic vs. pterygoid implants explains what each option is.

Records to collect from your oncology team

Bringing the right records to your first visit saves weeks and keeps the plan grounded in facts rather than guesses. Ask your cancer center or oncology office for these, and sign a release so the dental team can request anything missing:

• The radiation treatment summary, with the dates of treatment and the total dose.
• The dose to the jaws, ideally a dose map or a summary showing how much reached the upper and lower jaw and which areas got the highest dose. Your radiation oncologist or physicist can provide this.
• Any cancer surgery notes, especially if part of the jaw was removed or rebuilt with bone from elsewhere, such as the leg.
• The name, dose, start date and schedule of any bone-modifying drug, plus any prior bone drugs. Include osteoporosis drugs you took before cancer treatment.
• Your current cancer status, your surveillance schedule and any further treatment planned.
• Recent scans of the head and neck, if available, and a current medication list.
• Any dental records from your pre-treatment clearance, including X-rays and what was done.

Questions worth asking your oncologist before an implant consultation:

1. Which parts of my jaw received 50 Gy or more?
2. Are you comfortable with elective dental surgery now, and is any further treatment or imaging planned?
3. For bone drugs: how long do you expect me to stay on this drug, and would you consider adjusting the timing of a dose if my dental team recommends surgery? (Again, that is their decision.)
4. Who on your team should the dental office send notes to, and how?

Our article on how dental clearance communication with physicians works explains what that exchange usually looks like.

Traveling from San Antonio, New Braunfels, Schertz or Boerne

Most San Antonio-area patients find Hutto the shorter drive, along I-35 (some use the SH 130 toll road), while Katy is a straight run east on I-10. Both offices see full-arch patients, and the visit plan should include follow-up, because healing checks matter more after radiation or bone drugs. Our guide to traveling from San Antonio for full-mouth dental implants covers the drive, scheduling and what to pack.

What an evaluation usually involves:

• A consultation, which can start by phone, to go over your history and which records to gather.
• An in-person exam. Our Hutto office has CBCT 3D imaging on site (how our cone beam CT works), along with bone grafting and sinus procedures and a dentist anesthesiologist for sedation and anesthesia. Our Katy office is home to our in-house dental lab.
• Review of your records with your oncology team, with your written permission, before any surgical plan is finalized. When a physician asks for documentation, our dental clearance service explains how we provide it.
• A written plan that compares options, including options that avoid surgery in high-risk bone.

Ask about follow-up before you commit. The MASCC/ISOO/ASCO guideline recommends that patients on cancer-dose bone drugs who do have dental surgery be checked every six to eight weeks until the gum has fully covered the site. After radiation, slow healing is common. If regular drives to Hutto or Katy are hard, ask whether some checks can be shared with a dentist near home. For some survivors, a hospital-based dental oncology clinic closer to home is the better fit, and saying so is part of a fair consultation.

Insurance and cost questions after cancer treatment

Medical insurance is worth checking for some surgical parts of care, but it is never a sure thing, and implants, prosthesis and temporaries are billed to the patient. The 2024 guideline itself notes that medical insurance coverage for preventive dental care tied to cancer treatment is largely absent, even when that care is medically important.

At Regional Implant Centers, PPO plans with oral surgery coverage are the ones that may help with surgical professional services such as extractions, bone grafting and alveoloplasty. If you have a PPO plan with oral surgery benefits, there is a strong chance it is worth checking, so please verify your benefits with our team and your insurer. We cannot bill FEP (Federal Employee Program) Blue Cross Blue Shield plans. Our article on medical insurance for the oral surgery part of full-arch treatment explains how those claims work, and our insurance team can look at your plan. For the patient portion, see our financing options.

What to bring to your consultation

• Photo ID and insurance cards (medical and dental).
• The oncology records listed above, or the contact details for your radiation and medical oncology offices.
• A list of every medication, including bone drugs past and present.
• Any current dentures or partials, even if you do not wear them.
• Your questions, written down, including how often you can travel for follow-up.

Frequently asked questions

Can I get dental implants after radiation for head and neck cancer?

Sometimes. Implants placed in jaw bone that received radiation fail more often and carry a small risk of osteoradionecrosis, about 3 percent in pooled studies. Current guidelines advise avoiding implants in areas that received 50 Gy or more when another option can restore function. A specialist needs your radiation dose records to say whether a specific site is reasonable.

How long after radiation should I wait for dental implants?

There is no proven safe waiting period. Pooled studies suggest implants placed more than 12 months after radiation survive better, but in high-dose bone the risk of osteoradionecrosis does not fade with time. Timing should be agreed with your oncologist based on your cancer status and planned follow-up.

Can I have implants while taking Xgeva, Prolia or zoledronic acid?

It depends on the dose. At cancer doses (for example denosumab 120 mg or intravenous zoledronic acid for bone metastases), guidelines advise against elective implant surgery during active treatment, with exceptions only after a specialist and your oncologist review the case. At osteoporosis doses the risk is much lower. Never stop or delay a dose without your physician.

Do I need hyperbaric oxygen before dental surgery after radiation?

Not routinely. The 2024 ISOO-MASCC-ASCO guideline does not recommend routine hyperbaric oxygen to prevent osteoradionecrosis before dental surgery, based on a randomized trial that found similar rates with and without it. Your surgeon may discuss other precautions, such as antibiotics, antiseptic rinses or medications your physicians prescribe.

Are dentures safe after head and neck radiation?

Well-fitting dentures rarely cause osteoradionecrosis and are a sound option for many survivors. Fit is important because pressure sores can expose bone, and dry mouth can make dentures loosen. Expect more frequent adjustments and relines, and report any sore spot that does not heal.

Talk with a specialist team before you decide

If you live in San Antonio, New Braunfels, Schertz, Boerne or nearby and are weighing tooth replacement after radiation or while on a bone drug, start by gathering your oncology records. Then talk with a team that will review them before suggesting surgery. Schedule a consultation, book with our Austin-area office in Hutto or our Houston-area office in Katy, or call (832) 632-7037.

Sources & Resources

• Peterson DE, Koyfman SA, Yarom N, et al. Prevention and Management of Osteoradionecrosis in Patients With Head and Neck Cancer Treated With Radiation Therapy: ISOO-MASCC-ASCO Guideline. Journal of Clinical Oncology. 2024.
• Yarom N, Shapiro CL, Peterson DE, et al. Medication-Related Osteonecrosis of the Jaw: MASCC/ISOO/ASCO Clinical Practice Guideline. Journal of Clinical Oncology. 2019.
• Toneatti DJ, Graf RR, Burkhard JP, Schaller B. Survival of dental implants and occurrence of osteoradionecrosis in irradiated head and neck cancer patients: a systematic review and meta-analysis. Clinical Oral Investigations. 2021.
• Goh EZ, Beech N, Johnson NR, Batstone M. The dental management of patients irradiated for head and neck cancer. British Dental Journal. 2023.
• Jung J, Ryu JJ, Shim GJ, Kwon YD. Effect of Agents Affecting Bone Homeostasis on Short- and Long-Term Implant Failure: Consensus Statements. International Team for Implantology (ITI).
• Amgen Ltd, with the European Medicines Agency and the MHRA. Denosumab 120 mg (XGEVA): Updated information to minimise the risk of osteonecrosis of the jaw and hypocalcaemia. Direct healthcare professional communication. 2014.
• National Institute of Dental and Craniofacial Research. Cancer Treatments and Oral Health. NIH.

This article is general patient education and is not medical or dental advice. Decisions about surgery after radiation or during bone-drug therapy must involve your oncology team. Insurance coverage varies by plan; only PPO plans with oral surgery coverage may apply to surgical services, implants, prosthesis and temporaries are billed to the patient, and Regional Implant Centers cannot bill FEP Blue Cross Blue Shield plans. Please verify your benefits. Financing is subject to approval. Individual results vary, and not every patient is a candidate for implants. Regional Implant Centers has offices in Katy and Hutto, Texas.