A Randomized Controlled Clinical Trial to Assess Crestal Bone Remodeling of Four Different Implant Designs
- Conditions
- Dental Implant Bone Loss
- Registration Number
- NCT06821308
- Lead Sponsor
- University Ghent
- Brief Summary
This randomized controlled trial aimed to assess the effect of the implant neck design (microthreaded vs. non-microthreaded) as well as the type of abutment connection (internal conical vs. external flat-to-flat) on long-term crestal bone remodelling and peri-implant health. Four implants used for a bar-retained maxillary overdenture, were followed over a period of at least 6 years.
Twenty-five patients were treated with a bar-retained maxillary overdenture. Four different implants were placed, with respectively: internal connection and microthreads on the implant neck (I MT); internal connection, without microthreads (I NMT); external connection, with microthreads (E MT); and external connection, without microthreads (E NMT). Other design features, s.a. diameter, surface topography, extent of platform switch as well as the surgical and prosthetic treatment protocol were identical. Radiographic crestal bone loss (CBL), plaque score (PS), bleeding on probing (Bop) and probing pocket depth (PPD) were determined at 1 and 6 years after implant placement.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 25
- Edentulous in the maxilla and sufficient bone to harvest four 4 x 9 mm implant
- Head -and neck radiation
- Bisphosphonate intake
- Limited prosthetic height
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Crestal bone loss The measurements were performed at 1 and 6 years Radiographic measurement of crestal bone loss
- Secondary Outcome Measures
Name Time Method Bleeding on probing The measurements were performed at 1 and 6 years Probing pocket depth The measurements were performed at 1 and 6 years Plaque The measurements were performed at 1 and 6 years Plaque was measured at 4 sites on each implant
Related Research Topics
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Trial Locations
- Locations (1)
Ghent University
🇧🇪Ghent, Belgium
Ghent University🇧🇪Ghent, Belgium