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Study on OsseoSpeed™ Implants Replacing 2-5 Teeth in the Posterior Upper Jaw, Restored With Provisional Teeth Attached 6-7 Weeks Later

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00711113
Recruitment Status : Completed
First Posted : July 8, 2008
Results First Posted : February 7, 2014
Last Update Posted : February 7, 2014
Information provided by (Responsible Party):
Dentsply Sirona Implants

Brief Summary:
The purpose of the study is to evaluate Astra Tech Dental Implant System, Fixture Osseospeed™, in patients with tooth loss in the posterior maxilla in an early loading protocol. Primary objectives are implant stability, marginal bone adaptation and survival rate.

Condition or disease Intervention/treatment Phase
Jaw, Edentulous, Partially Device: OsseoSpeed™ Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 47 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: An Open, Prospective Study to Evaluate Implant Stability, Marginal Bone Adaptation and the Survival Rate of Astra Tech Dental Implant System, Fixture Osseospeed™, in Patients With Tooth Loss in the Posterior Maxilla in an Early Loading Protocol.
Study Start Date : December 2003
Actual Primary Completion Date : September 2011

Arm Intervention/treatment
Experimental: A Device: OsseoSpeed™
OsseoSpeed™, all dimensions

Primary Outcome Measures :
  1. Implant Survival Rate [ Time Frame: At 5 year follow-up ]
    An implant that has failed to osseointegrate, lost its osseointegration or fractured was considered a failure effective from the date of removal. The survival rate for individual implants was analyzed at each visit. Cumulative implant survival rate was calculated using Kaplan-Meier life-table estimation and reported as percentage of survived implants.

  2. Implant Stability [ Time Frame: At 1 year follow-up ]
    Implant stability was evaluated using Resonance Frequency Analysis (RFA). The RFA value was automatically translated into an Implant Stability Quotient index (ISQ), which runs from 1 to 100. The ISQ value indicates the level of stability. Low values (<60) indicate low stability, medium values (60-70) indicate medium stability and high values (>70) indicate high stability.

  3. Marginal Bone Adaptation [ Time Frame: At baseline (loading) and at 5 year follow-up ]
    Marginal bone adaptation was expressed as the distance from the implant reference point to the most coronal bone-to-implant contact on the mesial and distal side of the implant. Bone adaptation in millimeters at follow-up visit were compared to values obtained Baseline (loading). Positive value indicates bone gain and negative value bone loss.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Provision of written informed consent
  • 18 years of age and over
  • Edentulous in the posterior maxilla, Kennedy classes I or II. Last natural tooth, or previously restored implant in function is canine or first bicuspid.
  • Deemed by the investigator as likely to present an initially stabile implant situation suitable for early loading

Exclusion Criteria:

  • Untreated caries and/or periodontal disease of residual dentition
  • History of edentulism in the area of implant placement of less than two months
  • Current need for pre-surgical bone or soft tissue augmentation in the planned implant area.
  • History of pre-surgical bone or soft tissue augmentation, within12 months, in the planned implant area.
  • Sinus floor thickness of less than 5 mm, verified by periapical radiographs.
  • Any systemic or local disease or condition that would compromise post-operative healing and/or osseointegration
  • Need for systemic corticosteroids or any other medication that would compromise post-operative healing and/or osseointegration
  • Present alcohol or drug abuse
  • Unable or unwilling to return for follow-up visits for a period of 5 years
  • Current use of smoking tobacco
  • Pregnancy or lactation at the time of enrollment

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00711113

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United States, Iowa
University of Iowa, College of Dentistry, Dow's Institute for Dental Research
Iowa City, Iowa, United States, 52242-1010
United States, Texas
San Antonio, Texas, United States, 78229
Universitetsklinik Mainz, Klinik fur ZMK
Mainz, Germany, D-551 31
Sponsors and Collaborators
Dentsply Sirona Implants
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Principal Investigator: James T Mellonig, D.D.S., M.S University of Texas

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Responsible Party: Dentsply Sirona Implants Identifier: NCT00711113     History of Changes
Other Study ID Numbers: YA-OSS-0001
First Posted: July 8, 2008    Key Record Dates
Results First Posted: February 7, 2014
Last Update Posted: February 7, 2014
Last Verified: January 2014

Keywords provided by Dentsply Sirona Implants:
Jaw, Edentulous, Partially (posterior maxilla)

Additional relevant MeSH terms:
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Mouth, Edentulous
Jaw, Edentulous
Jaw, Edentulous, Partially
Mouth Diseases
Stomatognathic Diseases
Tooth Diseases
Jaw Diseases
Musculoskeletal Diseases