Study Results
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Basic Information
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COMPLETED
23 participants
OBSERVATIONAL
2005-04-30
2010-09-30
Brief Summary
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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.
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Detailed Description
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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.
Conditions
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Study Design
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CASE_ONLY
PROSPECTIVE
Interventions
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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 Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Edentulous in the area for more than 2 months
* Minimum native bone height and width to receive a 10mm X 4mm implant
Exclusion Criteria
* 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
19 Years
75 Years
ALL
Yes
Sponsors
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ACE Surgical Supply, Inc.
INDUSTRY
University of Alabama at Birmingham
OTHER
Responsible Party
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Michael Reddy, DMD
Interin Dean
Principal Investigators
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Michael S Reddy, DMD, DMSc
Role: PRINCIPAL_INVESTIGATOR
University of Alabama at Birmingham
Locations
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University of Alabama at Birmingham School of Dentistry
Birmingham, Alabama, United States
Countries
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References
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Zarb GA, Schmitt A. The longitudinal clinical effectiveness of osseointegrated dental implants: the Toronto study. Part III: Problems and complications encountered. J Prosthet Dent. 1990 Aug;64(2):185-94. doi: 10.1016/0022-3913(90)90177-e.
Goodacre CJ, Kan JY, Rungcharassaeng K. Clinical complications of osseointegrated implants. J Prosthet Dent. 1999 May;81(5):537-52. doi: 10.1016/s0022-3913(99)70208-8.
Jemt T, Book K, Linden B, Urde G. Failures and complications in 92 consecutively inserted overdentures supported by Branemark implants in severely resorbed edentulous maxillae: a study from prosthetic treatment to first annual check-up. Int J Oral Maxillofac Implants. 1992 Summer;7(2):162-7.
Naert I, Quirynen M, van Steenberghe D, Darius P. A study of 589 consecutive implants supporting complete fixed prostheses. Part II: Prosthetic aspects. J Prosthet Dent. 1992 Dec;68(6):949-56. doi: 10.1016/0022-3913(92)90557-q.
Kallus T, Bessing C. Loose gold screws frequently occur in full-arch fixed prostheses supported by osseointegrated implants after 5 years. Int J Oral Maxillofac Implants. 1994 Mar-Apr;9(2):169-78.
Jemt T, Laney WR, Harris D, Henry PJ, Krogh PH Jr, Polizzi G, Zarb GA, Herrmann I. Osseointegrated implants for single tooth replacement: a 1-year report from a multicenter prospective study. Int J Oral Maxillofac Implants. 1991 Spring;6(1):29-36.
Becker W, Becker BE. Replacement of maxillary and mandibular molars with single endosseous implant restorations: a retrospective study. J Prosthet Dent. 1995 Jul;74(1):51-5. doi: 10.1016/s0022-3913(05)80229-x.
Lazzara R, Siddiqui AA, Binon P, Feldman SA, Weiner R, Phillips R, Gonshor A. Retrospective multicenter analysis of 3i endosseous dental implants placed over a five-year period. Clin Oral Implants Res. 1996 Mar;7(1):73-83. doi: 10.1034/j.1600-0501.1996.070109.x.
Binon PP. Evaluation of the effectiveness of a technique to prevent screw loosening. J Prosthet Dent. 1998 Apr;79(4):430-2. doi: 10.1016/s0022-3913(98)70157-x.
McGlumphy EA, Mendel DA, Holloway JA. Implant screw mechanics. Dent Clin North Am. 1998 Jan;42(1):71-89.
Hurson S. Laboratory techniques to prevent screw loosening on dental implants. J Dent Technol. 1996 Apr;13(3):30-7.
Bragger U, Hafeli U, Huber B, Hammerle CH, Lang NP. Evaluation of postsurgical crestal bone levels adjacent to non-submerged dental implants. Clin Oral Implants Res. 1998 Aug;9(4):218-24. doi: 10.1034/j.1600-0501.1998.090402.x.
Weber HP, Buser D, Fiorellini JP, Williams RC. Radiographic evaluation of crestal bone levels adjacent to nonsubmerged titanium implants. Clin Oral Implants Res. 1992 Dec;3(4):181-8. doi: 10.1034/j.1600-0501.1992.030405.x.
Lekholm U, Zarb G. Patient selection and preparation. In Branemark P-I, Zarb GA and Albrektsson T. eds. Tissue Integrated Prosthesis: Osseointegration in Clincal Dentistry. Chicago: Quintessence 1985 pp 199-209
Other Identifiers
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W050404001
Identifier Type: -
Identifier Source: org_study_id
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