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- Abrahamsson, Ingemar, 1953, et al.
(författare)
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Healing at Implants Placed in an Alveolar Ridge with a Sloped Configuration: An Experimental Study in Dogs.
- 2014
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Ingår i: Clinical implant dentistry and related research. - : Wiley. - 1708-8208 .- 1523-0899. ; 16:1, s. 62-69
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To study healing around implants placed in an alveolar ridge with a sloped lingual-buccal configuration. Materials and Methods: Six Labrador dogs were used. Buccal bone defects were prepared in the mandible after extraction of premolars. Three months later, two test implants with a sloped marginal design and two control implants were placed in the chronic defect area with a sloped lingual-buccal configuration of each premolar region. The test implants were placed in such a way that the buccal margin of the implant coincided with the buccal bone crest. The lingual margin of the control implants was placed to a similar depth as the lingual margin of the test implants. Abutments were connected to the implants in the right mandibular premolar region and flaps were sutured around the neck of the abutments. In the left side of the mandible, cover screws were placed and the flaps were sutured to cover the implants. Biopsies were obtained 4 months later and prepared for histological examination. Results: It was demonstrated that healing around implants placed in an alveolar ridge with a sloped lingual-buccal configuration resulted in the preservation of a vertical discrepancy between the lingual and buccal marginal bone levels around implants with either a regular cylindrical outline or a modified marginal portion that matched the slope of the alveolar ridge. Conclusion: As the marginal buccal portion of the control implants with a regular design had no bone support, it is suggested that implants with a modified marginal portion may be considered in recipient sites with a sloped lingual-buccal configuration.
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- Araújo, Mauricio G, 1966, et al.
(författare)
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Bio-Oss collagen in the buccal gap at immediate implants: a 6-month study in the dog.
- 2011
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Ingår i: Clinical oral implants research. - : Wiley. - 1600-0501 .- 0905-7161. ; 22:1, s. 1-8
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Tidskriftsartikel (refereegranskat)abstract
- following tooth extraction and immediate implant installation, the edentulous site of the alveolar process undergoes substantial bone modeling and the ridge dimensions are reduced. objective: the objective of the present experiment was to determine whether the process of bone modeling following tooth extraction and immediate implant placement was influenced by the placement of a xenogenic graft in the void that occurred between the implant and the walls of the fresh extraction socket.
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- Carcuac, Olivier, 1974, et al.
(författare)
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Experimental periodontitis and peri-implantitis in dogs
- 2013
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Ingår i: Clinical Oral Implants Research. - : Wiley. - 0905-7161. ; 24:4, s. 363-371
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Aim: To analyze the tissue reactions following ligature removal in experimental periodontitis and peri-implantitis in dogs. Material and methods: Four implants with similar geometry and with two different surface characteristics (turned/TiUnite Nobel BioCare AB, Go ̈ teborg) were placed pair-wise in a randomized order in the right side of the mandible 3 months after tooth extraction in 5 dogs. Experimental peri-implantitis and periodontitis were initiated 3 months later by ligature placement around implants and mandibular premolars and plaque formation. The ligatures were removed after 10 weeks, and block biopsies were obtained and prepared for histological analysis 6 months later. Results: It was demonstrated that the amount of bone loss that occurred during the period following ligature removal was significantly larger at implants with a modified surface than at implants with a turned surface and at teeth. The histological analysis revealed that peri-implantitis sites exhibited inflammatory cell infiltrates that were larger, extended closer to the bone crest and contained larger proportions of neutrophil granulocytes and osteoclasts than in periodontitis. Conclusion: It is suggested that lesions produced in experimental periodontitis, and peri- implantitis are different and that implant surface characteristics influence the inflammatory process in experimental peri-implantitis and the magnitude of the resulting tissue destruction.
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