Actively Recruiting
Comparison of Two-piece Zirconia Implants With Tissue-level and Bone-level Platforms: Randomized Controlled Clinical Trial
Led by University of Ljubljana · Updated on 2026-05-06
24
Participants Needed
1
Research Sites
74 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are evaluating two types of two-piece zirconia dental implants in adults with missing premolar teeth in the upper jaw. The study focuses on comparing implants with tissue-level platforms versus bone-level platforms. The goal is to assess implant stability, survival rates, and their effects on surrounding bone and soft tissue health over several years. The trial is randomized and triple-blinded to ensure reliable results. Participants will be randomly assigned to receive either a 10-mm long, 4-mm wide zirconia implant with a tissue-level platform or a similar implant with a bone-level platform. After implant placement, stability will be measured using the International Stability Quotient device. Three months after the implant, ceramic crowns will be placed. The study will continue to monitor the implants and surrounding tissues at 1, 3, and 5 years after placement. During the study, participants will undergo evaluations including measurements of crestal bone loss, probing depth, bleeding on probing, and volumetric tissue changes at baseline and during follow-ups at 1, 3, and 5 years. The researchers will track implant survival and health of the peri-implant tissues over time. Participants will be followed for a total of 5 years to provide long-term data on implant performance and tissue response.
CONDITIONS
Brief Title
Two-piece Zirconia Implants With Two Various Platforms
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Single missing maxillary premolar
- Occlusal stability
- Good oral hygiene
- Good general health
- Age 25 years or older
You will not qualify if you...
- Oral mucosa pathology
- Dental caries
- Active untreated periodontitis
- Systemic diseases or conditions affecting healing or immune capacity
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Single procedure with ongoing observation
Participants receive two-piece zirconia dental implants either with tissue-level or bone-level platforms in the single gap premolar region of the maxillae.
1 implant procedure visit and follow-up visits as part of routine dental care
Duration - Up to 5 years
Participants are monitored for crestal bone loss, probing depth, bleeding on probing, and volumetric tissue changes after implant placement.
Visits at baseline, 1 year, 3 years, and 5 years
Trial Site Locations
Total: 1 location
1
University Medical Centre
Ljubljana, Slovenia, 1000
Actively Recruiting
Research Team
R
Rok Gašperšič, PhD
How is the study designed?
Study Type
INTERVENTIONAL
Masking
TRIPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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