The Complete Guide to Dental Implants — Procedures, Eligibility, Costs, Healing & Long-Term Ownership

Dental implants work because titanium forms a direct structural bond with living bone — a process called osseointegration that takes weeks to months.

The term osseointegration was defined by the Swedish researcher Per-Ingvar Brånemark in 1983 as “a direct structural and functional connection between ordered, living bone, and the surface of a load-carrying implant.” Brånemark’s research in Sweden established the modern technique, and the first titanium dental implant was placed in a human patient in 1965.

Biologically, what happens after an implant is placed follows the pattern of bone healing. New bone begins to form on the implant surface within the first weeks, and bone remodelling — the ongoing process by which bone reshapes itself in response to load — starts between roughly six and twelve weeks and continues for the life of the implant (Smeets et al., Periodontology 2000, 2016). The exact timeline depends on the site (lower jaw bone tends to integrate faster than upper jaw bone), the density of the bone, the implant system used and the patient’s general health.

Modern implants are designed to make this process as predictable as possible. Most contemporary systems use a roughened, sandblasted and acid-etched surface — the current gold standard for accelerating bone bonding (Smeets et al., 2016) — and some use additional hydrophilic chemical modifications (such as the SLActive surface developed by Straumann), which evidence suggests can accelerate early healing. For patients who prefer a metal-free option, ceramic implants made from yttria-stabilised zirconia (Y-TZP) are also available, though the long-term clinical evidence base for titanium is substantially larger than for zirconia.

For a deeper explanation of the science behind implant placement and how clinicians monitor early stability — including measurements such as the Implant Stability Quotient (ISQ) — see our dental implant science section.

Most adults with stable general health, healthy gums and adequate jawbone are suitable for dental implants — confirmed by clinical assessment.

The questions a clinician will work through during your consultation are practical rather than mysterious. Is there enough bone in the right place to hold an implant — something a CBCT scan can answer with precision? If not, can it be built up safely with grafting? Are the gums healthy, or is there active gum disease that needs to be brought under control first? Is your general health stable, and are any medications you take going to affect healing? How heavy a smoker are you, if at all? And how realistic are your expectations about how long the whole process will take?

Some factors are well-established as making implants more challenging or, in some cases, inadvisable. Untreated gum disease and untreated decay are typically resolved before implant treatment starts. Poorly controlled diabetes increases the risk of complications and is usually managed first. A history of treated gum disease is not a barrier, but it does mean closer long-term monitoring, because the same factors that affect gums also affect the tissues around implants. Smoking is consistently linked with higher rates of implant complications and failure, and most clinicians will discuss cutting down or stopping as part of planning.

Age in itself is rarely the deciding factor. Older patients with stable health are routinely treated successfully, and the relevant question is bone and tissue health rather than date of birth. What matters most is that the assessment is honest, the limitations are explained, and you leave the consultation knowing whether implants are a good fit for you — not for an average patient. For a more detailed walk-through of the eligibility factors and what each one means in practice, see our dental implant eligibility page.

Healing after an implant takes weeks to months — soft tissue settles within days, while bone bonding continues for several months.

In the first few days after placement, the focus is on letting the gum settle. Most people return to normal activities the next day. Mild swelling, bruising and tenderness are common in the first 48–72 hours and respond well to simple painkillers, soft foods, and gentle cleaning around the area. You will be given specific aftercare instructions and a follow-up appointment to check the area is healing as expected.

The biological process that matters most — osseointegration — is invisible. New bone begins forming on the implant surface within the first weeks, and the bond strengthens steadily over the following months. Bone remodelling around an implant typically begins between six and twelve weeks after placement (Smeets et al., 2016), which is why most clinicians wait several months before loading a routine single-tooth implant in good bone. The exact timeline depends on where the implant is, the quality of the bone, the implant system, and whether any grafting was done. For grafted sites or full-arch cases the healing window is longer. Your clinician will give you a realistic schedule at the planning stage, not on the day of surgery.

Day-to-day life during healing is rarely disruptive. People work, exercise, travel, and eat normally — they just avoid biting hard directly on the healing site for a defined period and take cleaning a little more carefully around the area. Many patients at Deepcar Dental Care tell us afterwards that the recovery was less disruptive than they had been expecting.

For a more detailed timeline of what each stage of recovery looks like, see our healing and aftercare guide.

The main long-term risks of dental implants are biological — peri-implant disease — and mechanical, such as loosening of the restoration.

The most clinically significant long-term risk is peri-implant disease, defined by the international 2017 World Workshop consensus (Berglundh et al., Journal of Clinical Periodontology, 2018) as a plaque-associated condition characterised by inflammation in the tissues around an implant. The earlier, reversible form is peri-implant mucositis (bleeding gum without bone loss). The more advanced form is peri-implantitis, which involves progressive loss of supporting bone.

Estimates of how common peri-implantitis is vary widely depending on the case definition used, but recent systematic review evidence (Diaz et al., BMC Oral Health, 2022) puts patient-level prevalence at approximately 19.5% and implant-level prevalence at approximately 12.5%. These numbers are not meant to alarm — they are meant to be honest. They reflect the importance of selecting patients carefully, controlling modifiable risk factors, and committing to long-term maintenance. Recognised modifying factors include smoking, poorly controlled diabetes, a history of gum disease, and lack of regular professional maintenance.

In clinical practice, the majority of peri-implant complications develop gradually rather than suddenly, and they are most commonly related to plaque accumulation and missed maintenance visits rather than to anything inherent in the implant itself. Most are manageable when identified early, which is why regular check-ups are not optional extras — they are the mechanism by which problems are caught while they are still easy to treat.

Other risks are uncommon but should be discussed openly at the planning stage. They include infection at the surgical site, temporary altered sensation if an implant is placed close to a nerve (the risk of which is reduced when treatment is planned with 3D imaging that maps the position of the inferior alveolar nerve), sinus complications when implants are placed in the upper back jaw, and mechanical issues with the restoration over time, such as a screw loosening or a crown chipping. Most mechanical complications are manageable when caught early at routine check-ups.

A small number of implants do not integrate successfully and need to be removed and, in many cases, replaced after healing. Early failures of this kind are unusual and usually identified within the first months. Dental implants are one of the most predictable treatments in dentistry, but they are not risk-free, and any clinician who tells you otherwise is not giving you the full picture.

For a more detailed look at dental implant complications, how they are managed, and what good long-term monitoring looks like, see our complications cluster.