What actually happens during a dental implant

A dental implant replaces the root of a missing tooth, not the tooth. That distinction explains almost everything else about the procedure — why it takes months rather than an afternoon, why the waiting matters more than the surgery, and why a crown fitted too early is the one mistake that undoes the whole thing.

What is placed

A titanium or titanium-alloy post, roughly the size of a tooth root

Placement appointment

Commonly 30–60 minutes for a single implant

Anaesthesia

Local, in most straightforward cases

Healing before the crown

Typically 3–6 months, depending on the site and the bone

Stage one: the post

The surgeon opens the gum over the site, prepares a channel in the jawbone at a controlled speed and temperature, and threads the implant into it. Heat is the enemy here: bone cells die at temperatures that sound unremarkable, so the drilling is done in steps with irrigation rather than in one pass. The gum is then closed over the implant, or around a small healing cap that protrudes through it.

For a single implant this is usually a short appointment under local anaesthetic. Most people describe the days afterwards as comparable to an extraction — swelling and tenderness that settle over roughly a week, managed with ordinary painkillers.

Stage two: osseointegration

This is the part nobody sees, and it is the part that decides whether the implant lasts. Bone does not glue itself to metal; it grows onto it. Over the following months, bone cells lay down new tissue directly against the implant surface until the post is locked into the jaw — a process called osseointegration, first described by Per-Ingvar Brånemark in the 1960s after he noticed that titanium chambers implanted in rabbit bone could not be removed.

Nothing accelerates this reliably. The implant surface is textured to increase the area bone can attach to, and modern surfaces integrate faster than the machined ones of forty years ago, but the biology still takes the time it takes. The usual wait before loading an implant is three to six months, shorter in the dense bone of the lower jaw and longer in the softer bone of the upper.

Stage three: the crown

Once the implant has integrated, an abutment is attached to it — the connector that emerges through the gum — and an impression or a digital scan is taken. The crown is then made to fit the gap and to meet the opposing teeth correctly. A crown that is fractionally too tall is not a cosmetic problem; it concentrates chewing force on one implant and is a common reason for later trouble.

When a graft comes first

Bone shrinks where a tooth has been missing, and it shrinks fastest in the first year. If there is not enough left to hold an implant, bone has to be added before or during placement — sometimes a small amount at the time of surgery, sometimes a separate procedure with its own healing period of several months. In the upper back jaw this often means a sinus lift, where the floor of the sinus is raised to make vertical room.

This is the single most common reason a treatment plan is longer than a patient expected, and it is worth asking about early rather than discovering it after arriving.

What makes implants fail

• Smoking, which impairs healing and is consistently associated with higher failure rates in the literature.
• Uncontrolled diabetes, for the same reason.
• Peri-implantitis — inflammation of the tissue around the implant, driven by plaque, which behaves like gum disease and destroys the bone holding the implant.
• Overloading, usually from an untreated grinding habit or a bite that was not adjusted.

Three of those four are manageable. An implant needs cleaning between it and the gum for the rest of its life, and the people who keep implants longest are the ones who were told that plainly at the start.