Replacement teeth are broadly called dental prostheses (or dental prosthetics). That’s the umbrella term dentists use for any artificial device that replaces one or more missing teeth. Within that category, the specific name depends on how many teeth are missing, how the replacement attaches, and whether you can take it out yourself. The most common types you’ll hear about are dental implants, bridges, dentures, and crowns.
Dental Implants
A dental implant is a small post, usually made of titanium or zirconia, that a dentist surgically places into your jawbone to serve as an artificial tooth root. Over three to six months, the post fuses with the bone in a process called osseointegration. Once that bond is solid, two more pieces complete the setup: an abutment (a connector that sits on top of the post) and a crown (the visible, tooth-shaped piece you see when you smile).
Titanium implants are the most common. They have a threaded, rough surface designed to grip bone. Zirconia implants are a newer, metal-free alternative that some people choose for cosmetic reasons or metal sensitivities. The titanium post itself is designed to last a lifetime, though the crown or bridge sitting on top of it will eventually wear out. Zirconia crowns and bridges typically last 15 to 20 years, while acrylic versions need replacing closer to every 7 to 10 years. Most complications involve wear on the visible prosthesis rather than failure of the implant underneath.
Dental Bridges
A dental bridge fills a gap by anchoring a false tooth to the natural teeth on either side. The false tooth in the middle is called a pontic, and the natural teeth supporting it are called abutment teeth. There are three main types:
- Traditional bridge: The most common design. A pontic is held in place by crowns cemented onto the healthy teeth on both sides of the gap. Those supporting teeth need to be filed down to fit the crowns.
- Cantilever bridge: Uses only one adjacent natural tooth for support instead of two. This works when there’s only one strong tooth next to the gap.
- Maryland bridge: Instead of crowns, a wing-like metal or porcelain framework is bonded to the backs of the neighboring teeth. It’s less invasive because the supporting teeth don’t need to be reshaped as dramatically.
Bridges are classified as fixed dental prostheses, meaning you can’t remove them yourself. They stay cemented in place and function like natural teeth.
Dentures
Dentures are removable prostheses that you can take out and put back in on your own. They come in two main forms:
- Complete dentures: Replace an entire arch of teeth, either the upper jaw, the lower jaw, or both. These rest on your gums and are held in place by suction or adhesive.
- Partial dentures: Replace some missing teeth when you still have healthy natural teeth remaining. They typically clip onto your existing teeth for stability.
A third option, called an overdenture, sits on top of a few remaining natural teeth, tooth roots, or dental implants for added support. Overdentures are more stable than conventional dentures because they have something solid to grip rather than relying on gums alone.
Full-Arch Implant Restorations
When someone is missing all or most of their teeth, a full-arch implant restoration replaces an entire row at once. You may have heard this called “All-on-4,” which refers to a technique where four implants support a complete arch of replacement teeth. Similar systems use five or six implants depending on the situation. The American College of Prosthodontists recognizes full-arch implant restorations as a well-established treatment option.
These restorations are typically fixed in place with screws, so they feel and function more like natural teeth than removable dentures. The visible arch can be made from several materials: acrylic layered over a metal frame, milled zirconia, or porcelain fused to a ceramic base. Zirconia is the most durable option, with roughly double the bending strength of porcelain.
Fixed vs. Removable: Why the Distinction Matters
Dentists categorize every replacement tooth as either fixed or removable, and this is the single most important distinction when comparing your options. A fixed dental prosthesis is permanently attached to implants or natural teeth. You brush and floss it in place, and only a dentist can take it out. A removable dental prosthesis is one you pop in and out yourself for cleaning and sleeping.
The terminology can get confusing because some implant-supported options blur the line. Certain designs are technically removable by the patient through a friction-fit or locking mechanism, yet they don’t move during eating or talking. These are sometimes called patient-removable restorations to distinguish them from traditional dentures. Interestingly, the American College of Prosthodontists has noted that many patients associate the word “denture” with something old-fashioned or embarrassing, so clinicians increasingly use “prosthesis” or “restoration” instead, even when describing the same device.
Common Materials
The material your replacement teeth are made from affects how they look, how long they last, and how much they cost. Porcelain has been the standard for decades. It’s biocompatible and mimics the translucency of natural enamel well. Zirconia is the newer alternative, offering significantly greater strength and durability while still looking natural. For removable dentures, the base is usually made of acrylic resin shaped and colored to resemble gum tissue, with the teeth themselves made from acrylic, porcelain, or zirconia.
Implant posts are almost always titanium or zirconia. Titanium is the industry standard because of its proven track record of fusing reliably with bone. Zirconia posts are white rather than metallic gray, which can matter if you have thin or receding gums where a metal post might show through.