| 1. |
- Dahlin, Christer, 1959, et al.
(författare)
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Generation of new bone around titanium implants using a membrane technique: an experimental study in rabbits.
- 1989
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Ingår i: The International journal of oral & maxillofacial implants. - 0882-2786. ; 4:1, s. 19-25
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Tidskriftsartikel (refereegranskat)abstract
- Insufficient bone volume may be a significant problem in connection with dental implants. In this study, a technique based on the principle of guided tissue regeneration was tested for its ability to generate bone tissue around titanium implants. Implants were inserted in tibiae of rabbits. To create a secluded space for osteogenesis and to prevent soft-tissue ingrowth, a porous Teflon membrane was placed around exposed parts of the implant. Where a membrane had been used, the threads of the implant were completely covered with significant amounts of new bone. This study indicates that the membrane technique is a reconstructive surgical method that may be applicable to create new bone around exposed parts of titanium implants in a clinical setting.
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| 2. |
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| 3. |
- Kahnberg, K E, et al.
(författare)
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Combined use of bone grafts and Brånemark fixtures in the treatment of severely resorbed maxillae.
- 1989
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Ingår i: International Journal of Oral & Maxillofacial Implants. - 0882-2786 .- 1942-4434. ; 4:4, s. 297-304
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Tidskriftsartikel (refereegranskat)abstract
- Bone grafts from the hip in combination with Brånemark self-tapping fixtures have been used to rehabilitate patients with extremely resorbed maxillae. Experiences and results from the first ten consecutive cases have been analyzed to form the basis for further use of the method. Eight of 57 fixtures placed have been lost to date. Surgical complications, including exposure of the bone transplant, have occurred in three patients. The method should be used with caution, and cases should be meticulously chosen to exclude those who do not have proper motivation to endure the long-lasting and demanding surgical and prosthetic procedures required. The combined use of implants and transplants should not be used routinely until a long-term evaluation of the method and results has been made.
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| 4. |
- Sennerby, Lars, 1960, et al.
(författare)
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Soft-tissue response to clinically retrieved titanium cover screws reimplanted in the rat abdominal wall.
- 1989
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Ingår i: The International journal of oral & maxillofacial implants. - 0882-2786. ; 4:3, s. 233-9
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Tidskriftsartikel (refereegranskat)abstract
- Clinically retrieved titanium implant cover screws (Brånemark implant system), rinsed in saline or subjected to ultrasonic cleaning and sterilization, as well as unused sterile screws were studied by scanning electron microscopy and implanted in the rat abdominal wall for 6 weeks. Irrespective of cleaning procedure, the heads of the clinically retrieved screws were covered by numerous contaminants not present on the unused screws. The reimplanted screws elicited a different tissue response than the unused screws. The tissue response to the contaminated screws was characterized by a significantly thicker fibrous capsule and by a significantly larger number of macrophages located close to the implant. Moreover, judging from their ultrastructure, studied with transmission electron microscopy, the macrophages appeared to be in a more active state when compared to those located adjacent to unused screws.
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