- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01917305
Influence of Platform-switching on Bone Level Alterations: a 3 Year Randomized Clinical Trial (RCT).
August 6, 2013 updated by: Søren Jepsen
Influence of Platform-switching on Bone Level Alterations: a 3 Year RCT.
The concept of platform-switching has been introduced to implant dentistry based on clinical observations of reduced periimplant crestal bone loss.
However, published available data are controversial and most studies are limited to 12 months.
The aim of the present RCT was to test the hypothesis that platform-switching has a positive impact on crestal bone level changes after 3 years.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Two implants with a diameter of 4 mm were inserted crestally in the posterior mandible of 25 subjects.
After three months of submerged healing, single-tooth crowns were randomly placed, either with (3.3mm platform, test) or without platform-switching (4mm platform, control).
Patients were followed up at short intervals for monitoring of healing an oral hygiene.
Statistical analysis for the influence of time and platform-type on bone levels employed the Brunner-Langer Model.
Study Type
Interventional
Enrollment (Actual)
25
Phase
- Not Applicable
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
30 years to 75 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- good general health
- edentulous gap in the posterior mandible for placement of 2 implants
- sufficient bone height above the alveolar nerve for placement of implants with a height of 9.5mm
- bone width for placement of implants with diameter of 4mm
- at least 4mm keratinized mucosa
- medium or a thick soft tissue biotype
Exclusion Criteria:
- infectious disease
- diabetes or osteopathy
- active periodontitis
- medication influencing bone metabolism
- lactating or pregnant women
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: platform-switched implant
|
|
Active Comparator: platform-matched implant
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change of vertical implant bone level
Time Frame: Implant insertion (baseline), 3 months (reopening), 4 months (crown mounting), 12, 25 and 38 months
|
Implant insertion (baseline), 3 months (reopening), 4 months (crown mounting), 12, 25 and 38 months
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
probing depths
Time Frame: 4, 8, 12, 25, 38 months
|
4, 8, 12, 25, 38 months
|
Bleeding
Time Frame: baseline, 4, 8, 12, 25, 38 months
|
baseline, 4, 8, 12, 25, 38 months
|
Plaque
Time Frame: baseline, 4, 8, 12, 25, 38 months
|
baseline, 4, 8, 12, 25, 38 months
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Jervøe-Storm PM, Hablützel AS, Bartels P, Kraus D, Jepsen S, Enkling N. Comparison of irrigation protocols for the internal decontamination of dental implants-results of in vitro and in vivo studies. Clin Oral Implants Res. 2021 Oct;32(10):1168-1175. doi: 10.1111/clr.13814. Epub 2021 Aug 27.
- Enkling N, Johren P, Katsoulis J, Bayer S, Jervoe-Storm PM, Mericske-Stern R, Jepsen S. Influence of platform switching on bone-level alterations: a three-year randomized clinical trial. J Dent Res. 2013 Dec;92(12 Suppl):139S-45S. doi: 10.1177/0022034513504953. Epub 2013 Oct 24.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
February 1, 2007
Primary Completion (Actual)
March 1, 2010
Study Registration Dates
First Submitted
July 31, 2013
First Submitted That Met QC Criteria
August 2, 2013
First Posted (Estimate)
August 6, 2013
Study Record Updates
Last Update Posted (Estimate)
August 9, 2013
Last Update Submitted That Met QC Criteria
August 6, 2013
Last Verified
August 1, 2013
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- PFS3YRCT
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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