Nordic Institute of Dental Materials

Zirconia dental implants; the relationship between design and clinical outcome: A systematic review

A new systematic review compares the clinical outcomes of different designs of zirconia dental implants: one- or two-piece implants, implants with different surface roughness, different diameters, or lengths within the same implant design. The review was conducted in a collaboration between Malmö University and NIOM as part of dentist Adulaziz Guls' PhD project.

There are various design alternatives for zirconia dental implants available. In general, one-piece implants consist of a fixture and abutment in one piece, while two-piece implants are designed with the abutment separated from the implant fixture. Two-piece implants have different implant-abutment connections that can be cemented, screwed, or both in combination. The screws can be made of materials other than zirconium dioxide, such as metal alloy or polyetheretherketone (PEEK).

Furthermore, the connections can experience marginal leakage, plaque accumulation, and mechanical complications at the joint interface, which can be avoided by using one-piece implants with a design that reduces the risk of complications associated with the contact area within the interface between the implant fixture and the abutment.

The study found promising five-year clinical outcomes for one-piece zirconia implants with no difference between different diameters and lengths. Concerning surface roughness, better outcomes have been found when using acid-etched designs compared to other surface treatments. Further high-quality clinical studies comparing zirconia one-piece and two-piece implants with different diameters, lengths, and surface roughness are, however, needed.

Read the full article here.

Treatment of deep caries

Senior Scientist Frode Staxrud at NIOM have written a literature summary on zirconium dioxide in the newly published 2024 edition of “Aktuel Nordisk Odontologi”.

The pulp has important functions for a tooth's life and survival. Teeth with deep caries lesions should be treated conservatively if possible.

Read more about "treatment of teeth with deep caries" here, or find the article on page 42.

Vacant positions

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We seek future employees with devotion to our values and desire to make a difference.

Researcher: materials technology

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Application deadline: 07.04.2024

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NIOM

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