Evaluation of the ACE Dental Implant (ACE-2005)

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: NCT00641576
Recruitment Status : Completed
First Posted : March 24, 2008
Last Update Posted : July 22, 2013
ACE Surgical Supply, Inc.
Information provided by (Responsible Party):
Michael Reddy, DMD, University of Alabama at Birmingham

March 17, 2008
March 24, 2008
July 22, 2013
April 2005
September 2010   (Final data collection date for primary outcome measure)
Junctional stability between device and abutment [ Time Frame: 24 months ]
Same as current
Complete list of historical versions of study NCT00641576 on Archive Site
  • Peri-implant osseous support of the device [ Time Frame: 24 months ]
  • Peri-implant soft-tissue response to the device [ Time Frame: 24 months ]
Same as current
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Evaluation of the ACE Dental Implant
A Study to Evaluate the Morse Taper Lock and Connection of the ACE Implant Internal-Connection and Its Effect of the Biological Gap

Dental implants are small metal posts that look like miniature screws. They are surgically implanted into the jawbone where they serve as substitute tooth roots. Implants are used in dentistry to reestablish function and aesthetics to areas of the mouth were natural teeth are missing.

Classical dental implants are made in two pieces. One part anchors in the jawbone and one part serves as a connecting post (an abutment) that attaches to a crown restoration or to attachment clasps that hold a denture in place.

Occasionally the materials used to fasten the two implant components together work their way loose and over time the abutment may begin to disconnect. If this happens a small gap appears between the implant and abutment. There are many reasons why this loosening occurs. One reason may be the design of the implant itself and another may be the way the two components are fastened together.

This study will assess the performance of an implant with a new design. The investigators hypothesize that using this implant design will reduce the risk of an implant-abutment disconnect and improve long-term success of implant therapy.

While the external hex dental implant design has had very good clinical success, it is limited by retention screw loosening at the junction of the implant fixture and abutment; a situation that leads to micro-movement between components.

A number of clinical complications may arise when implant components separate. Micro-movement between the implant abutment and seating platform is thought to contribute to the formation of a "biological gap", the most notable consequence being gradual resorption of crestal alveolar bone over time.

We hypothesize that the "ACE CONNECT" two-piece implant design with an internal connection will limit screw loosening by providing a stable junction between the body of the implant and the abutment; a more stable junction will limit micro-movement and prevent the formation of a gap between components. Limiting the gap will lead to less inflammation of peri-implant soft tissues and reduced resorption of bone adjacent to the implant.

Observational Model: Case-Only
Time Perspective: Prospective
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Non-Probability Sample
Dental school periodontology clinic
Device: ACE CONNECT Endosseous dental implant

Subjects in this study receive ACE CONNECT Internal-Connection dental implants to: 1)replace a missing tooth in an edentulous area of the maxilla or mandible restored with a single-unit crown (may include up to two non-adjacent areas as study sites) or, 2)subjects with an edentulous mandible will receive two implants placed in the lower canine position and restored with an implant-retained removable over-denture.

Subjects will return for four follow-up evaluations scheduled at 6, 12, 18 and 24 months after delivery of the permanent restoration.

Other Names:
  • ACE Morse Taper Lock
  • ACE Implant Internal-Connection
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
September 2010
September 2010   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Need for replacement of non-adjacent missing teeth with dental implants
  • Edentulous in the area for more than 2 months
  • Minimum native bone height and width to receive a 10mm X 4mm implant

Exclusion Criteria:

  • Untreated decay or periodontal disease in residual dentition
  • Need for bone or soft-tissue augmentation in the proposed implant site
  • Pregnancy
  • Consistent use of medications likely to compromise bone healing
  • Chronic disease condition likely to compromise bone healing
  • Consistent smoking over 10 cigarettes during the immediate past 6 months
Sexes Eligible for Study: All
19 Years to 75 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
United States
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Michael Reddy, DMD, University of Alabama at Birmingham
University of Alabama at Birmingham
ACE Surgical Supply, Inc.
Principal Investigator: Michael S Reddy, DMD, DMSc University of Alabama at Birmingham
University of Alabama at Birmingham
July 2013