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Dental Implant Rejection: Will My Mouth Say No?

Updated: Apr 30

Dental implants are a popular and effective solution for missing teeth, but in some cases, the body may reject them, leading to tooth implant rejection. Osseointegration, the process where the implant fuses with the jawbone, is crucial for successful dental implant surgery and implant placement. However, various factors can hinder this integration, causing early or late implant failure.

Although relatively uncommon, with a 5-10% failure rate, it's essential to recognize the signs of dental implant rejection and understand its causes. Early detection and proper management are key to preventing complications and ensuring the long-term success of your dental implants.

Early Signs of Dental Implant Rejection

Early signs of dental implant rejection can manifest in various ways, indicating potential complications that require prompt attention. Here are some common early warning signs:

Infection at the Implant Site

  • Swelling, redness, and tenderness around the implant area

  • Pus or discharge from the surgical site

  • Persistent or worsening pain and discomfort

Implant Micro-movements

  • Looseness or mobility of the implant

  • Difficulty in chewing or biting down

  • Abnormal sensations or sounds when biting

Insufficient Bone Support

  • Lack of stability or integration with the jawbone

  • Visible gaps or spaces around the implant

  • Persistent pain or discomfort during healing

Allergic Reactions

  • Swelling or inflammation of the gums or face

  • Tingling or numbing sensations

  • Loss of taste or metallic taste in the mouth

Poor Post-operative Care

  • Failure to follow recommended dietary restrictions

  • Inadequate oral hygiene or plaque buildup

  • Excessive force or trauma to the implant site

It's crucial to promptly report any concerning signs or symptoms to your dental professional, as early intervention can often prevent further complications and increase the chances of successful implant integration.

Late Signs of Dental Implant Rejection

While early signs of dental implant rejection are crucial to recognize, it's also important to be aware of late signs that may indicate a potential issue. Late signs of implant rejection can occur weeks, months, or even years after the initial implant surgery. Here are some common late signs to watch out for:

  1. Persistent Pain or Discomfort: If you experience ongoing pain, discomfort, or tenderness around the implant site, even after the initial healing period, it could be a sign of implant rejection or failure.

  2. Gum Inflammation or Infection: Swollen, red, or inflamed gums around the implant area, accompanied by bleeding or pus, may indicate an infection or rejection of the implant.

  3. Implant Mobility: If the implant feels loose or moves when you bite down or chew, it may signify a lack of proper osseointegration (fusion with the jawbone).

  4. Bone Loss around the Implant: Visible bone loss or recession around the implant site, as detected through X-rays or dental examinations, can be a sign of implant rejection or failure.

  5. Difficulty Chewing or Biting: If you experience persistent difficulty or discomfort while chewing or biting down on the implant, it could be a sign of improper implant integration or rejection.

Risk Factors for Dental Implant Rejection

Several factors can increase the risk of dental implant rejection. Gum disease is a top risk factor, as it can lead to implant failure. Maintaining good oral hygiene habits can substantially lower the risk of gum disease and subsequent implant rejection.

Other significant risk factors include:

  1. Age: Older patients tend to have a higher risk of implant failure due to factors like decreased bone density and healing ability.

  2. Smoking: Smoking reduces blood flow, impairs immune function, and inhibits healing, leading to higher failure rates.

  3. Medical Conditions:

  • Diabetes can decrease bone formation and increase implant failure risk.

  • Osteoporosis decreases bone mass and density, hindering osseointegration.

  • Corticosteroid therapy reduces bone density and immune function.

  • Immune deficiencies compromise tissue repair and increase infection risk.

  • Bleeding disorders can cause uncontrolled bleeding during implant placement.

  • Cardiovascular disorders interfere with healing and osseointegration.

  1. Medications: Immunosuppressant drugs like cyclosporine (taken by organ transplant recipients) may negatively impact implant healing.

  2. Habits: Bruxism (teeth grinding) can cause micromotion above critical limits, preventing osseointegration.

  3. Implant Factors: Certain implant surface types (e.g., RBM), immediate placement in extraction sockets, lack of prophylactic antibiotics, and shorter implant lengths are associated with higher failure rates.

  4. Bone Quality: Poor bone quality (type D4) and low-density bone (type III/IV) increase the risk of implant failure.

  5. Location: Implants in the maxilla (upper jaw) and posterior regions have higher failure rates compared to the mandible and anterior regions, respectively.

Addressing these risk factors through proper treatment, lifestyle changes, and careful implant planning can significantly improve the chances of successful dental implant integration.

Prevention and Aftercare for Successful Implants

Maintaining proper oral hygiene and following post-operative care instructions are crucial for preventing dental implant rejection and ensuring successful osseointegration. Here are some key preventive measures and aftercare tips:

Oral Hygiene Practices

  1. Brush and floss regularly to remove harmful bacteria and prevent infection.

  2. Use an antibacterial rinse or saltwater rinse to keep incision sites clean.

  3. Continue seeing your dentist every 6 months for checkups to spot potential issues early.

Post-Operative Care

  1. Stick to a soft food diet for the first couple of weeks after implant surgery to avoid solid foods that could disrupt the implant and interfere with osseointegration.

  2. Refrain from smoking, as smoking restricts blood flow and prevents proper healing, significantly increasing the risk of implant failure. Smokers should quit at least 1-2 weeks before the procedure and avoid smoking for 4-6 weeks after.

  3. Take prescribed medication as directed to reduce the risk of infection, which can lead to implant failure.

  4. Avoid hard foods that could disrupt the healing process and open up incisions. Stick to a liquid diet for 24 hours after the procedure, then soft foods for the first week.

  5. Protect the teeth from oral trauma by avoiding contact sports and other activities that could cause injury for a couple of months after the procedure. Wear a protective mouthguard if participating in contact sports.

  6. Follow all post-surgical care instructions provided by the dentist, including scheduling recommended follow-up appointments and continuing regular dental exams and cleanings.

  7. Avoid using your teeth or implants as tools to open, twist, or rip things, as they have limits.

  8. Talk to your dentist if you notice any changes in your oral health, such as irritated or bleeding gums, or if you have any concerns about dental implant failure or need additional guidance on aftercare.

If you have any additional questions about your oral hygiene, please feel free to contact us at Traditions Dental. To learn more about Traditions Dental visit our About Us page. For more tips and information feel free to follow us on social media on IG @traditionsdental and Facebook @traditionsdental.


What are the signs that my body is rejecting a dental implant?

If you suspect your body might be rejecting a dental implant, there are several symptoms to look out for. These include:

  • Severe pain and discomfort

  • Gum recession around the implant

  • Difficulty chewing and biting

  • The implant feels loose or shifts

  • Swollen gums

  • Micro-movements of the implant

  • Sudden allergic reactions

  • Teeth grinding

What are the consequences if a dental implant is rejected by the body?

When a body rejects a dental implant, several issues can arise. Common signs of rejection include increased pain at the implant site, swelling, fever, and chills. Additionally, a dental implant in the upper jaw might protrude into the sinus cavity. Any injury to the surrounding area might also cause the implant to loosen, which can lead to implant failure.

How does it feel when an implant is being rejected?

Experiencing mobility in the implant is a clear sign of rejection. You might also feel slight discomfort or pain when pressing on or palpating the implant area. Furthermore, pain or discomfort can occur during the impressions on the dental implant.

How quickly can an implant be rejected?

Implant rejection can occur early, typically within the first three to four months following surgery. This period is before the jawbone has completely healed around the implant.


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