When dental implants fail.

Two failure windows: early and late

Implant failures fall into two distinct categories defined by when they occur:

• Early failure — within the first months after placement, before or during osseointegration. The implant doesn't successfully bond with the bone.
• Late failure — months or years after a successful integration. The bond was good, but something happened after to compromise it.

The causes, signs, and treatments are different for each.

Early failure (months 0–6)

What it looks like

• The implant feels loose or moves slightly when touched
• Pain or discomfort that doesn't follow the expected post-surgery decline
• Persistent swelling or tenderness past the typical healing window
• Visible recession of the gum tissue around the implant
• The implant looks taller above the gum than it should
• On imaging, lack of bone formation around the implant or a visible gap

What causes it

• Insufficient bone-to-implant contact at placement — the implant didn't have enough surrounding bone to integrate, often because of inadequate pre-surgical planning or unexpected bone quality
• Infection during healing — bacterial contamination of the surgical site disrupts integration
• Premature loading — biting down on the implant before integration was complete
• Smoking — significantly raises early failure risk
• Poorly controlled diabetes — affects healing
• Certain medications — particularly bisphosphonates (used for osteoporosis and some cancers) and immunosuppressants
• Surgical factors — overheating of the bone during drilling, contaminated implant surface, surgical technique

What treatment looks like

The implant is typically removed (it's already not bonded; removal is straightforward). The site is cleaned, infection treated if present, and given time to heal. In most cases, a bone graft is placed to rebuild the site over a few months. After healing, a new implant can usually be placed.

Total elapsed time from removal to a new implant being functional: typically 6–12 months. Cost: depends on your provider's failure-coverage policy. Some practices warrant the implant for the first year and cover the redo. Others don't. Ask about failure-coverage policy at consultation →

Late failure (months 6+, often years later)

The most common cause: peri-implantitis

Bacterial gum infection around the implant — analogous to advanced gum disease around a natural tooth. Bacteria accumulate in a pocket between the implant and the gum, the gum becomes inflamed, and over time the bone supporting the implant erodes. If unchecked, it eventually destabilizes the implant.

Signs to watch for:

• Bleeding from the gum around the implant when brushing or flossing
• Persistent redness or swelling at the gum line around the implant
• Unpleasant taste or breath localized to the implant
• Pus from the gum around the implant
• Increased pocket depth on probing at dental visits
• Looseness or shifting of the implant — by the time this is felt, the disease is already advanced

What causes it:

• Inadequate cleaning around the implant (the leading factor)
• Smoking
• Existing untreated gum disease at the time of placement
• Poorly fitting crown or abutment leaving a place for bacteria
• Diabetes
• Genetic susceptibility to gum disease

Other late failure modes

• Mechanical failure — fracture of the implant post (rare; titanium is robust), fractured abutment screw, fractured crown. The implant typically isn't replaced; just the broken component.
• Trauma — a hard impact to the face can dislodge or damage an implant.
• Bone loss from systemic causes — severe osteoporosis, untreated diabetes, chronic systemic illness can erode supporting bone over time.
• Loose abutment screw — not technically failure; usually a quick fix where the screw is re-tightened.

How peri-implantitis is treated

Catching it early is critical — the earlier the treatment, the more bone is preserved.

1. Mild cases (peri-implant mucositis): deep cleaning of the implant surface, antimicrobial rinses, improved home cleaning. Reversible if caught early.
2. Moderate cases: mechanical debridement (sometimes with laser-assisted treatment), local antimicrobials, possible surgical access to clean below the gum line.
3. Advanced cases: surgical treatment to clean the implant surface and graft bone where it's been lost. In severe cases, removal of the implant.

Treatment is more successful the earlier it starts. Routine 6-month dental visits with implant-specific probing checks are how this is caught.

What to do if you suspect a problem

1. Call your provider. Don't wait. Implant complications are typically more treatable when caught early.
2. Don't bite down on the implant area if anything feels off (loose, painful, mobile). Let your provider assess before you put more force on it.
3. Continue gentle cleaning with a soft brush — but don't aggressively probe or floss the area trying to "fix" it.
4. Document what you're noticing — when it started, what triggers it, what it feels like. This helps your provider diagnose.
5. If your original provider can't see you quickly or doesn't take the issue seriously, get a second opinion. Periodontists specifically have expertise in peri-implantitis.

Planning ahead — financial and clinical

Ask about failure-coverage policy

Before you commit to an implant, ask your provider:

• "If the implant fails to integrate in the first year, what does the redo cost?"
• "If the implant fails years later, what's my financial responsibility?"
• "What's your office's track record with the implant brand you're using?"

Some practices warrant the implant for one year (or longer) and cover the redo at no charge. Others don't. This is reasonable to ask in writing.

Maintain like you mean it

Most late failures (peri-implantitis) are preventable with consistent home care and routine dental visits. The implant doesn't get cavities the way a real tooth does — but the gum and bone around it can absolutely get diseased, and faster than you'd think when neglected.