Am I a Candidate for a Dental Implant?

Almost nobody is ruled out by a single fact. Certain conditions shift the odds, and the job at a consult is to say by how much. A few things are close to absolute: bone that cannot be rebuilt, an untreated infection, and a handful of medications and cancer treatments that make jaw healing genuinely unsafe. Everything else here is a risk to be measured, managed, and stated out loud before anyone commits to surgery.

Can I Get an Implant If I Don’t Have Enough Bone?

Usually yes, but the answer depends on which dimension is missing.

Width is the easier problem. A ridge that narrowed after years without a tooth can be widened with a graft, reasonably predictably. Height under an upper back tooth is also solvable, because the sinus above it can be raised and bone placed beneath it; sinus grafting has one of the longest track records in the field. Bone grafting and sinus lift cover both.

Height in the lower back jaw is the hard one. The nerve that supplies the lip runs through that bone and cannot be moved casually, and building vertical height above a ridge is among the least predictable augmentation procedures. Grafting also needs a blood supply and gum tissue that closes over it without tension, and a site scarred by repeated surgery or radiation may give neither.

Grafting fixes most deficiencies, not all. When it cannot, the alternatives are real: a shorter implant, implants angled to use the bone that exists, a bridge, or a removable option. Full-arch options covers the choices when many teeth are involved.

Can I Get an Implant If I Have Gum Disease?

Not while it is active. Periodontitis is a bacterial infection that has already shown, in that mouth, an ability to destroy bone around a tooth. The same bacteria colonize an implant, which has no periodontal ligament and no attachment fibers running into it, so it has fewer defenses than a tooth.

The direction of the evidence is consistent. In a ten-year study by Karoussis and colleagues in Clinical Oral Implants Research, implants in patients with a history of periodontitis survived at 90.5 percent against 96.5 percent in patients without that history, and peri-implantitis occurred in 28.6 percent of the periodontitis group against 5.8 percent of the other. That was a small study, with eight patients in the periodontitis group, so the percentages are less firm than they look. The American Academy of Periodontology lists a previous diagnosis of periodontal disease first among the risk factors for peri-implant disease, alongside poor plaque control, smoking, and diabetes. The review prepared for the 2017 World Workshop found the data on those last two inconclusive, so the periodontitis history is the part of that list to weigh most heavily.

Treated periodontitis is a different situation: patients whose disease is controlled and who keep a maintenance schedule do well. Treat the disease, confirm it is stable, then place the implant. Gum disease treatment covers the first step, what periodontal maintenance means what continues afterward.

Does Smoking Mean I Can’t Have an Implant?

No, but it is among the largest modifiable risks here, and it deserves a number rather than a lecture.

Meta-analyses put the failure risk in smokers at roughly twice that of non-smokers. Chrcanovic and colleagues, pooling 107 studies in the Journal of Dentistry, found that implants placed in smokers failed at 6.35 percent against 3.18 percent in non-smokers, and that smoking also significantly raised the risk of postoperative infection and marginal bone loss. Grafted sites fare worse still, because smoking impairs the early blood supply a graft depends on, so membrane exposure and graft loss are both more common. The CDC states that cigarettes, smokeless tobacco, and other forms of tobacco cause gum disease as well as oral cancer, and that is the same tissue the implant sits in.

Stopping matters most around the surgery: at least a week before and eight weeks after, covering graft revascularization and early integration. Dr. Verrett will place implants for patients who smoke and will say the risk first, but will decline a large graft in a heavy smoker who does not intend to stop, because that is a procedure likely to fail.

Can I Get an Implant If I Have Diabetes?

Yes, and control matters far more than the diagnosis.

A systematic review and meta-analysis by Tan and colleagues in the Journal of Evidence-Based Dental Practice pooled 22 studies and found implant survival high over the first three years, between 92.6 and 100 percent, in patients whose HbA1c was under 8 percent. It also found a dose-response pattern rather than a cutoff: each step up in HbA1c came with about 10 percent more bleeding around the implant and 0.05 millimeters more bone loss. The authors call that evidence moderate. Poorly controlled diabetes is a different matter: high blood sugar impairs the immune response, slows collagen formation, and delays healing, and it is associated with more peri-implant inflammation and bone loss over time.

There is no universally agreed HbA1c cutoff, and anyone quoting one as settled is overstating the evidence. Many surgeons prefer a value below roughly 7 to 8 percent before elective implant surgery and coordinate with the treating physician above that. The practical version: a patient whose numbers are steady and who checks them is usually fine, and a patient whose diabetes is undiagnosed or untracked should be worked up before, not after.

Am I Too Young, or Too Old?

Too young is a real limit. An implant fuses to bone and does not move, while a growing jaw keeps developing around it, so an implant placed in a teenager can look sunken and out of alignment years later as the neighboring teeth keep erupting. Placement waits until skeletal growth is complete, generally the late teens for girls and somewhat later for boys, judged on growth records rather than a birthday. A temporary tooth bridges the gap.

Too old is rarely a limit in itself, but it is not nothing either, and the honest version says so. In the ten-year meta-analysis by Howe and colleagues, older age was a significant predictor of lower implant survival, at 91.5 percent in patients aged 65 and over against 96.4 percent overall, and the authors describe that as a possible doubling of the risk of implant loss in older groups. What sits behind that is mostly healing capacity, medications, and whether the patient can manage the cleaning afterward, all of which are assessed individually rather than by birthday.

What About Bisphosphonates and Other Bone Medications?

These change the plan, and they are why the medication list at the consult is read line by line.

Antiresorptive drugs slow the bone turnover that would otherwise remodel and repair the jaw. The group includes oral bisphosphonates such as alendronate, intravenous bisphosphonates such as zoledronic acid, and denosumab; certain antiangiogenic cancer drugs carry related concerns. The risk is medication-related osteonecrosis of the jaw, in which bone exposed by surgery fails to heal and dies.

The scale of that risk depends on the dose and the reason for the drug. The American Association of Oral and Maxillofacial Surgeons position paper puts the risk after tooth extraction in osteoporosis patients on oral bisphosphonates at zero to 0.15 percent, and the risk of osteonecrosis in the osteoporosis group generally below 0.05 percent. For cancer patients on high-dose antiresorptives the same paper reports risk in the low single digits of percent, and one to five percent after an extraction.

That gap drives the recommendation. Low-dose oral therapy for osteoporosis is usually compatible with implant surgery after a conversation with the prescribing physician. For patients on antiresorptive or targeted therapy for cancer, the AAOMS paper states plainly that dental implants are contraindicated. The same paper calls drug holidays before surgery controversial, and that decision belongs to the physician who prescribed them.

Can I Get an Implant After Head and Neck Radiation?

Sometimes, with a longer conversation and a higher risk.

Radiation permanently reduces the blood supply of bone, and the risk rises with the dose delivered to the site. A systematic review by Chambrone and colleagues in the Journal of Dental Research found implants in irradiated jaws failing significantly more often than implants in jaws that were not irradiated, with a risk ratio of about 2.7 overall and about 6.0 in the upper jaw. The larger concern is osteoradionecrosis, which is difficult to treat and does not resolve on its own.

Placement is typically deferred at least six to twelve months after radiation ends, planned with the oncology team, and kept out of the highest-dose fields where possible. Hyperbaric oxygen has been used in the hope of improving outcomes, but in the same review it did not reduce the risk of implant failure, and only three studies of it were included, so it should not be presented as settled in either direction. The elevated risk does not expire; it persists for life.

What If I Take a Blood Thinner or Have a Bleeding Disorder?

An anticoagulant is rarely a reason to cancel implant surgery, and stopping one is often the greater danger. For most patients on warfarin with an INR in the therapeutic range, and most on direct oral anticoagulants, current practice is to proceed without interrupting the medication, because bleeding at a surgical site is controllable with local measures while a clot is not. That decision is made with the prescribing physician, never by the patient alone.

Inherited bleeding disorders such as hemophilia and von Willebrand disease are managed rather than excluded, with hematology involved and factor coverage arranged in advance. Recent cardiac stenting on dual antiplatelet therapy is a reason to wait rather than to stop the drugs.

Can I Get an Implant If I Grind My Teeth?

Yes; the grinding changes the design more than the decision. Bruxism generates forces well beyond chewing, applied to a restoration with no ligament to cushion it.

The evidence here is uneven and worth marking. The association between bruxism and technical complications, particularly screw loosening and ceramic fracture, is fairly consistent across studies; the association with outright implant failure is weaker, and reviews disagree. In practice that means more implants rather than fewer for a given span, no cantilevers, careful bite adjustment, and a night guard. The patient who skips the guard is the one who comes back with a fractured crown. Problems with an existing implant covers that.

Can I Get an Implant While I’m Pregnant?

Elective implant surgery waits until after delivery. Not because an implant would harm a pregnancy, but because sedation, radiographs, antibiotics, and pain medication are all simpler decisions afterward.

Active infection is different and is treated during pregnancy, with the second trimester the most comfortable window. Gums that bleed more during pregnancy are common and are a reason to be seen, not to wait.

So Who Is a Poor Candidate?

Stated plainly, the patients who do worst are:

• Anyone with untreated periodontitis who does not intend to keep maintenance appointments afterward.
• A heavy smoker unwilling to stop around the surgery, especially one who needs grafting.
• A patient with uncontrolled or unmonitored diabetes.
• A patient on high-dose intravenous antiresorptive therapy for cancer.
• A site that has recently received high-dose radiation.
• A jaw with vertical bone loss that cannot be rebuilt, where the alternatives have been dismissed rather than considered.
• Anyone expecting an implant to be maintenance-free. It trades decay for other risks.

Dr. Verrett declines cases. That is part of what a specialist referral is for, and a patient told that an implant is a poor idea in their situation has received something useful.

How the Answer Actually Gets Made

Candidacy is settled at one visit at Austin Periodontal Associates in North Austin: an exam, a full medical and medication history, periodontal charting, and a cone-beam scan of the site. Most of the questions here are answered that afternoon, and where a physician must weigh in, the office writes to them.

Dental implants covers the procedure, replacing a single tooth the most common case, and a consult can be requested here.