Implant-Supported Superstructure – Implant-Supported Dental Prosthesis with a Crown on a Dental Implant

In medical terms, a superstructure is the visible part of a dental implant. It is attached to the implant and performs the same function as natural teeth.

The dental implant itself is surgically placed into the bone, where it fuses firmly in place. This process, in which the implant and bone fuse together, creates a stable foundation for the subsequent restoration. Once the implant has integrated into the jawbone, the dentist can screw the dental restoration (crown, bridge, or similar) into place. The superstructure marks the completion of this treatment and is the part that is visible in the mouth and actively involved in chewing. 

In modern dentistry, the superstructure is a central component of implant-based treatment plans and enables a long-term, durable restoration.

A superstructure is the dental restoration attached to an implant @ Marcus Kretschmar /AdobeStock

The loss of one or more teeth can have various causes. Advanced tooth decay, periodontitis, traumatic events, or age-related changes are often to blame. If missing teeth remain untreated, this can lead to functional limitations, shifting of the dental arches, and bone resorption.

A stable prosthetic restoration is medically advisable, especially in cases of larger gaps and shortened dental arches. Implant-supported solutions with superstructures help restore chewing function, speech, and aesthetics.

In dental surgery, unlike in orthopedics, for example, implants made of pure titanium are primarily used.

The advantage: Titanium is a highly reactive material that immediately forms a passive layer of TiO₂ upon contact with oxygen. This makes titanium-based dental implants biocompatible and ensures their long-term reliability.

Modern titanium implants also often contain micropores ranging from 5 to 100 µm, which facilitate better bone integration (osseointegration). Titanium allergies or foreign body reactions are extremely rare.

Between the implant and the superstructure is a connecting piece called an abutment. This abutment is firmly attached to the implant and supports the subsequent dental prosthesis. Depending on the treatment plan, different abutments are used.

The choice of materials depends on anatomical conditions, functional requirements, and the patient’s individual preferences.

Titanium implants integrate well with the jawbone and can bear weight more quickly @ Enigma /AdobeStock

In contrast, the first ceramic implants used alumina ceramics. These were more prone to implant fractures. The dental prosthesis would literally break off at the “implant root.”

With the introduction of modern ceramics, these problems have been largely minimized, so ceramic implants are gaining popularity today.

Due to their color and good tissue compatibility, modern ceramics are considered an aesthetic option for dental restorations.

Ceramic implants look much more like real teeth @ Andreas /AdobeStock

After the implant has been placed and the healing phase is complete, the prosthetic restoration begins. The treating dentist inserts the abutment into the internal thread of the implant. The superstructure is then fitted and secured.

There are essentially two types of attachment available.

The superstructure can be screw-retained or cement-retained. With the screw-retained option, the dental prosthesis is fixed directly in place, and the screw access point is later aesthetically closed off. This solution allows for later removal, as the dental prosthesis can be loosened again.

With the cemented option, the dental prosthesis is permanently secured. A cemented superstructure offers excellent aesthetics but is more difficult to remove. In both cases, the dental prosthesis is custom-made at a dental laboratory. The dental technician ensures that the design is anatomically correct and functionally stable.

When multiple teeth are missing, bridges or crowns are frequently used as superstructures. Often, a restoration supported by two implants is sufficient to support a stable bridge. This type of implant-supported prosthesis preserves adjacent teeth and offers a high level of comfort.

Implant-supported bridges are also a proven solution when larger areas of the dentition need to be replaced. They provide a fixed restoration with a natural chewing sensation.

If the jaw is completely edentulous, various implant-supported options are available. Often, placing just two implants is sufficient to securely anchor a removable denture.

Alternatively, fixed restorations can be created, each based on four implants per jaw. Such approaches are used in both the upper and lower jaws and allow for fixed dentures even without extensive bone grafting.

Depending on the individual situation, bridges or dentures are used as the superstructure.

Even though superstructures look natural and are usually indistinguishable from natural teeth, there are still differences. One of the most obvious differences lies in the way the teeth absorb shock.

A complex fiber network in the jawbone holds natural teeth in place. This network absorbs pressure during chewing. Implants do not have this fiber network.

They integrate into the jawbone and remain firmly attached to it. This can increase the risk of the implant breaking off or becoming loose. Additionally, inflammation around the implant is possible.

For these reasons, a checkup of the implants and superstructures every six months is recommended.

The costs associated with such treatment depend on the number of implants, the type of restoration, and the materials used. Statutory health insurance plans generally cover a fixed subsidy—the so-called “fixed subsidy”—which is based on standard care.

Whether the treatment involves conventional dentures or implant-supported restorations, the subsidy remains the same. Patients are responsible for covering the difference. It is recommended to consult with your health insurance provider and treating dentist early on.

Dentists who offer implantology and superstructures usually have additional specializations such as implantology, oral surgery, or maxillofacial surgery.

You can also find superstructure experts in your area. Above, we have therefore compiled a list of selected specialists in superstructures and/or dental health centers with experience in the field of implantology.

The superstructure is a central component of modern implantology treatments. It enables a functional, aesthetic, and long-term stable restoration in cases of tooth loss. Thanks to modern materials, precise planning, and structured follow-up care, implant-supported dentures offer a high degree of safety and quality of life.