A 5-year clinical study on the performance of 8 mm zirconia one-piece implants restored with three restoration materials differing in the elastic modulus

A 5-year clinical study on the performance of 8 mm zirconia one-piece implants restored with three restoration materials differing in the elastic modulus - ZrO2 8 mm

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00011146

Enrollment

Registered

2016-11-15

Start date

2016-11-22

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

K08.1

Interventions

Group 1: Zirconia implants (ceramic.implant, VITA). Prosthetic reconstruction: monolithic zirconia (VITA YZ) Group 2: Zirconia implants (ceramic.implant, VITA). Prosthetic reconstruction: monolithic

Eligibility

Sex/Gender

All

Age

20 Years to No maximum

Inclusion criteria

Inclusion criteria: •Male and female patients at least 20 years old, in need of an implant supported single tooth restoration •No general medical condition which represents a contraindication to implant treatment •One missing tooth in the mandible or maxilla in position of premolars or molars •At least 10 mm of vertical bone height in the mandible allowing for the placement of a 8 mm implant (2 mm safety distance to inferior alveolar nerve) •At least 7 mm of vertical bone height in the maxilla allowing for a 1 mm internal sinus elevation procedure (Osteotome technique). •Signed informed consent form

Exclusion criteria

Exclusion criteria: •Smoking of more than 15 cigarettes a day (clinical studies show an increased failure rate of implants in heavy smokers) •Poor oral hygiene after hygienic phase (Plaque Index over 30%) •Active periodontal disease •Women who are pregnant or breast feeding at the date of inclusion •Known or suspected non-compliance, drug or alcohol abuse •Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant

Design outcomes

Primary

Measure	Time frame
Mean marginal bone level after 5 years, measured by standardized digital periapical radiographs.	—

Secondary

Measure	Time frame
Implant survival and biological complications (mucositis, periimplantits) as well as survival rate and technical complications of the three reconstruction materials, assessed after 1, 3 and 5 years	—

Countries

Switzerland

Contacts

Public ContactRonald Jung

Zentrum für Zahnmedizin, Klinik für Rekonstruktive Zahnmedizin, Universität Zürich

ronald.jung@zzm.uzh.ch+41 44 634 04 04

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026