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Tissue characteristics at microthreaded implants: an experimental study in dogs.

Artikel i vetenskaplig tidskrift
Författare Ingemar Abrahamsson
Tord Berglundh
Publicerad i Clinical implant dentistry and related research
Volym 8
Nummer/häfte 3
Sidor 107-13
ISSN 1523-0899
Publiceringsår 2006
Publicerad vid Institutionen för odontologi
Sidor 107-13
Språk en
Länkar dx.doi.org/10.1111/j.1708-8208.2006...
Ämnesord Alveolar Bone Loss, pathology, radiography, Animals, Bicuspid, Biopsy, Bone Density, physiology, Crowns, Dental Abutments, Dental Implants, Dental Prosthesis Design, Dental Prosthesis, Implant-Supported, Denture, Partial, Fixed, Dogs, Mandible, pathology, physiopathology, radiography, Osseointegration, physiology, Surface Properties, Time Factors
Ämneskategorier Odontologi, Biomaterial

Sammanfattning

PURPOSE: The aim of the present study was to analyze bone tissue reactions at implants with and without a microthread configuration. MATERIALS AND METHODS: In six beagle dogs, one test and two control implants were installed in one side of the mandible. While both implant types had a similar dimension and surface roughness, the test implants were designed with a microthread configuration in the marginal portion. Abutment connection was performed after 3 months. Another 3 months later, fixed partial dentures (FPDs) were cemented to the maxillary canine and premolars and FPDs were connected to the implants in the mandible. Ten months later, the animals were sacrificed and biopsies from each implant region were processed for histological analysis. Radiographs were obtained at implant placement after FPD connection and at the termination of the experiment. RESULTS: The radiographic examination revealed that the marginal bone level was well preserved at both test and control implants during the entire 16-month period. The degree of bone-implant contact within the marginal portion of the implants was significantly higher at the test (microthread) implants (81.8%) than at the control implants (72.8%). CONCLUSIONS: It was suggested that the microthread configuration offered improved conditions for osseointegration.

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