Most healthy adults who have lost a tooth are candidates for a dental implant. What decides the case is not age but three things: enough bone in the right place, gums that are free of active disease, and a medical history that allows minor oral surgery and normal healing. Where one of those is missing, it can often be corrected first rather than ruling implants out altogether.
This article sets out what is actually assessed during an implant consultation, which conditions complicate treatment, and what can be done when the initial answer is “not yet”.
The three core requirements
1. Sufficient bone
An implant has to be surrounded by bone on all sides. After a tooth is removed, the ridge of bone that held it begins to resorb, and the change is fastest in the first months. So the volume available depends largely on how long the tooth has been missing, why it was lost, and whether there was infection or a difficult extraction.
Position matters as much as quantity. In the upper back jaw, the maxillary sinus sits above the roots and its floor can drop as bone is lost. In the lower jaw, the inferior alveolar nerve runs through the bone and must be given clearance. This is why a two-dimensional X-ray is often not enough and a three-dimensional CBCT scan is used to measure height, width and the distance to these structures before any surgery is planned.
2. Healthy gums
Implants are not immune to gum disease. The tissue around an implant can become inflamed and lose bone in a process called peri-implantitis, which behaves aggressively once it starts. A patient with untreated periodontitis is therefore not treated by placing an implant into an inflamed mouth; the periodontal condition is stabilised first, and only then is the implant site assessed. Patients with a history of gum disease can absolutely have implants — they simply need their condition controlled and monitored more closely afterwards. Our gum and periodontal care page explains that stage of treatment.
3. A medical history that allows healing
Implant placement is minor oral surgery, and integration depends on bone healing normally. Anything that substantially impairs healing, blood supply or immune response affects the prognosis. That does not mean a long list of automatic exclusions — most of these are matters of control and timing rather than absolute barriers.
Age: what matters and what does not
There is no upper age limit for dental implants. Health status matters, not the number. Many implants are placed in patients in their seventies and eighties, and the procedure is generally well tolerated.
There is, however, a lower limit. Implants do not move with growth. If one is placed in a jaw that is still developing, the surrounding natural teeth continue to erupt and drift while the implant stays exactly where it was put, and the result over time is a tooth that looks submerged and out of line. For this reason implants are normally deferred until skeletal growth is essentially complete — which happens at different ages in different people, and is assessed individually rather than by birthday.
Medical conditions that need attention first
Diabetes
Well-controlled diabetes is not a barrier to implant treatment. Poorly controlled diabetes is a meaningful risk factor, because it affects healing and increases susceptibility to infection around the implant. The relevant question is the level of control, and it is worth discussing your recent results with your physician before treatment is planned.
Smoking
Smoking is one of the strongest modifiable risk factors for implant complications. It reduces blood flow in the gum tissue, slows healing after surgery, and is consistently associated with higher rates of peri-implantitis and implant loss. Smoking does not make treatment impossible, but any honest consultation will raise it, and stopping — at least around the surgical and healing period — measurably improves the odds.
Medications affecting bone
Some medications used for osteoporosis and for certain cancers alter bone turnover and are associated with a risk of impaired healing in the jaw after oral surgery. This does not automatically prevent implant treatment, but it changes the risk assessment substantially, and it must be discussed with both your dentist and the doctor who prescribed the medication. Never stop such a medication on your own; bring the name, the dose and how long you have been taking it to your consultation.
Other situations that need planning
- Radiotherapy to the head and neck region, past or planned.
- Conditions or medications that suppress the immune system.
- Blood-thinning medication, which needs to be managed rather than ignored.
- Bleeding disorders.
- Any condition for which your physician recommends antibiotic cover before dental procedures.
The practical instruction is simple: bring a complete, current list of your medical conditions and every medication and supplement you take, including ones you consider irrelevant.
Habits and bite problems
Heavy clenching or grinding (bruxism) places sustained overload on an implant, which does not have the shock-absorbing ligament a natural tooth has. Bruxism is not a contraindication, but it changes the plan — the number and position of implants, the material of the crown, and often a night guard to protect the result. A significantly unbalanced bite is assessed for the same reason, and may need orthodontic attention before or alongside implant treatment.
When the answer is “not yet”
A large share of patients told elsewhere that they cannot have implants are in fact candidates after preparatory treatment. Common routes include:
- Bone grafting. Additional bone volume is built up at the site and allowed to mature before the implant is placed.
- Sinus lift. In the upper back jaw, the sinus membrane is raised and the space beneath it grafted to create height.
- Periodontal therapy. Gum disease is treated and stabilised, and the response is checked before implant planning begins.
- Extraction of a hopeless tooth with site preservation. Grafting the socket at the time of removal limits the ridge collapse that would otherwise follow.
- Medical optimisation. Improving glycaemic control or stopping smoking changes the risk profile before rather than after surgery.
Each of these adds time to the overall treatment. That is the trade-off: a longer path to a more predictable result.
What happens at the consultation
A candidacy assessment normally includes a full clinical examination of the teeth and gums, a periodontal assessment, radiographs and usually a CBCT scan, a review of your medical history and medications, an assessment of your bite and any grinding habit, and a discussion of what you want the final result to look and feel like. Only after that can anyone give you a realistic plan, a timeline, and a cost.
Be cautious of any implant plan offered without radiographic assessment. There is no way to measure bone by looking at a mouth.
Frequently asked questions
I have been missing a tooth for ten years. Is it too late?
Usually not. The ridge will have narrowed, so grafting may be part of the plan, but a long-standing gap is not in itself a disqualification.
Can I have an implant if I wear a denture?
Yes, and implants are frequently used specifically to stabilise a loose lower denture. The assessment is the same: bone, gums, medical history.
Do implants fail more often in some people?
Yes. Smoking, uncontrolled diabetes, a history of periodontitis and heavy grinding are the factors most consistently associated with higher failure rates. All four can be managed.
Is the assessment itself invasive?
No. It is an examination, radiographs and a conversation.
Find out where you stand
The only reliable way to know whether you are a candidate is an examination with imaging. You can read more on our dental implants page, or book an appointment to be assessed.
To arrange a consultation at our clinic on Abbas El-Akkad in Nasr City, call +20 101 969 7597 or message us on WhatsApp.
