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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT00545818
Registration number
NCT00545818
Ethics application status
Date submitted
16/10/2007
Date registered
17/10/2007
Date last updated
19/05/2020
Titles & IDs
Public title
Study Comparing OsseoSpeed™ Implants of Two Different Lengths in the Upper and Lower Posterior Jaw
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Scientific title
An Open, Prospective, Randomized, Multi-center Study Comparing OsseoSpeed™ Implant 6 mm With OsseoSpeed™ Implant 11 mm in the Posterior Maxilla and Mandible. A 5-year Follow-up Study.
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Secondary ID [1]
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YA-SHO-0001
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Jaw, Edentulous, Partially
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Condition category
Condition code
Oral and Gastrointestinal
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Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Devices - OsseoSpeed™ length 6 mm
Treatment: Devices - OsseoSpeed™ length 11 mm
Experimental: Group-1, Implant length 6 mm - Subjects treated with OsseoSpeed™ implant, length: 6 mm
Other: Group-2, Implant length 11 mm - Subjects treated with OsseoSpeed™ implant, length: 11 mm
Treatment: Devices: OsseoSpeed™ length 6 mm
OsseoSpeed™ dental implant, length: 6 mm
Treatment: Devices: OsseoSpeed™ length 11 mm
OsseoSpeed™ dental implant, length: 11 mm
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Intervention code [1]
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Treatment: Devices
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Radiological Assessments of Marginal Bone Level Alteration
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Assessment method [1]
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Marginal Bone Level determined from radiographs and expressed as the difference from a reference point on the implant to the most coronal bone-to-implant contact on the mesial and distal aspect of the implant.
Marginal Bone Level expressed in millimeters at the 5 year follow-up visit compared to values obtained at delivery of temporary restoration i.e. loading (baseline).
Positive value = bone gain, Negative value = bone loss.
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Timepoint [1]
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Evaluated from implant installation to 5 years follow-up after implant placement
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Secondary outcome [1]
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Overall Implant Survival
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Assessment method [1]
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Overall implant survival, measured on implant level
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Timepoint [1]
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Evaluated 5 years after implant placement
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Secondary outcome [2]
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Evaluation of the Periimplant Mucosa Condition - By Assessment BoP
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Assessment method [2]
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Condition of the periimplant mucosa by assessment of Bleeding on Probing (BoP). Presented as s count of implants that show presence of BoP.
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Timepoint [2]
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Measured at the 5-year follow-up visit after loading
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Secondary outcome [3]
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Evaluation of the Periimplant Mucosa Condition - By Assessment of Change in PPD
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Assessment method [3]
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Condition of the periimplant mucosa by assessment of change in probing pocket depth (PPD).
Change in pocket depth expressed in millimeters at the 5-year follow-up visit, compared to values obtained at delivery of permanent restoration, i.e. loading (baseline).
Negative value = increased pocket depth.
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Timepoint [3]
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Evaluated at implant loading and at the 5-year follow-up visit.
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Secondary outcome [4]
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Presence of Plaque
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Assessment method [4]
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Presence of plaque was evaluated at four surfaces around each study position (mesial, facial, distal and lingual). Plaque was recorded as presence or absence of plaque by visual inspection.
A study position was considered as bleeding "yes" if at least one of the four surfaces around the implant showed presence of bleeding on probing.
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Timepoint [4]
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Evaluated at the 5-year follow-up visit after loading.
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Eligibility
Key inclusion criteria
* Provision of informed consent
* Aged 20-70 years at enrolment
* History of edentulism in the study area of at least four months
* Neighboring tooth/teeth to the planned bridge must have natural root(s)
* Presence of natural teeth, partial prosthesis and/or implants in the opposite jaw in contact with the planned bridge.
* Deemed by the investigator to have a bone height of at least 11 mm and a bone width of minimum 6 mm
* Deemed by the investigator as likely to present an initially stable implant situation
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Minimum age
20
Years
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Maximum age
70
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Unlikely to be able to comply with study procedures, as judged by the investigator
* Earlier graft procedures in the study area
* Uncontrolled pathologic processes in the oral cavity
* Known or suspected current malignancy
* History of radiation therapy in the head and neck region
* History of chemotherapy within 5 years prior to surgery
* Systemic or local disease or condition that could compromise post-operative healing and/or osseointegration
* Uncontrolled diabetes mellitus
* Corticosteroids or any other medication that could influence post-operative healing and/or osseointegration
* Smoking more than 10 cigarettes/day
* Present alcohol and/or drug abuse
* Involvement in the planning and conduct of the study (applies to both Astra Tech staff and staff at the study site)
* Previous enrolment in the present study.
* Severe non-compliance to protocol as judged by the investigator and/or Astra Tech
* Simultaneous participation in another clinical study, or participation in a clinical study during the last 6 months
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Open (masking not used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
NA
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/11/2007
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
1/05/2016
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Sample size
Target
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Accrual to date
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Final
97
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Recruitment in Australia
Recruitment state(s)
VIC
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Recruitment hospital [1]
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School of Dental Science, University of Melbourne - Melbourne
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Recruitment postcode(s) [1]
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3010 - Melbourne
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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California
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Country [2]
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United States of America
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State/province [2]
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Iowa
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Country [3]
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Netherlands
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State/province [3]
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Apeldoorn
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Country [4]
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Sweden
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State/province [4]
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Göteborg
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Country [5]
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United Kingdom
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State/province [5]
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London
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Dentsply Sirona Implants and Consumables
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
The purpose of this study is to see if OsseoSpeed™ implant 6 mm long is effective for rehabilitation of edentulism and if so, how it compares with OsseoSpeed™ implant 11 mm long. The primary hypothesis is that the alteration in bone level is equal in patients randomized to 6 mm as to patients randomized to 11 mm implants.
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Trial website
https://clinicaltrials.gov/study/NCT00545818
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Trial related presentations / publications
Gulje F, Abrahamsson I, Chen S, Stanford C, Zadeh H, Palmer R. Implants of 6 mm vs. 11 mm lengths in the posterior maxilla and mandible: a 1-year multicenter randomized controlled trial. Clin Oral Implants Res. 2013 Dec;24(12):1325-31. doi: 10.1111/clr.12001. Epub 2012 Sep 3. Zadeh HH, Gulje F, Palmer PJ, Abrahamsson I, Chen S, Mahallati R, Stanford CM. Marginal bone level and survival of short and standard-length implants after 3 years: An Open Multi-Center Randomized Controlled Clinical Trial. Clin Oral Implants Res. 2018 Aug;29(8):894-906. doi: 10.1111/clr.13341. Epub 2018 Jul 12.
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Public notes
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Contacts
Principal investigator
Name
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Anna-Karin Lundgren
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Address
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Direktor Clinical Research, Dentsply Sirona Implants, Mölndal, SWEDEN
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Type
Citations or Other Details
Journal
Gulje F, Abrahamsson I, Chen S, Stanford C, Zadeh ...
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Journal
Zadeh HH, Gulje F, Palmer PJ, Abrahamsson I, Chen ...
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Results are available at
https://clinicaltrials.gov/study/NCT00545818
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