An evaluation of early bone changes after the insertion of metal endosseous implants into the jaws of rhesus monkeys

Armitage, Jack E.; Natiella, Joseph R.; Greene, George W.; Meenaghan, Michael A.

doi:10.1016/0030-4220(71)90321-5

Cited by 33 publications

(6 citation statements)

References 14 publications

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“…In rabbits, known for rapid bone regeneration, 6 weeks may be an appropriate healing time whereas in man 3-4 months is necessary (Albrektsson et al 1978). Perhaps the most important reason for the occurrence of the connective tissue sheath generally seen around different types of implants is the immediate loading allowed (Armitage et al 1971, Driskell 1973, Nixon 1975. Another way of preventing osseointegration, as shown by Brunski et al (1979), is to attach jaw bone implants to adjacent functioning teeth.…”

Section: Irnpfant Loading Conditionsmentioning

confidence: 99%

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Albrektsson

Brånemark

Hansson

et al. 1981

Acta Orthopaedica Scandinavica

2,435

1,398

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A total of 2895 threaded, cylindrical titanium implants have been inserted into the mandible or the maxilla and 124 similar implants have been installed in the tibial, temporal or iliac bones in man for various bone restorative procedures. The titanium screws were implanted without the use of cement, using a meticulous technique aiming at osseointegration--a direct contact between living bone and implant. Thirty-eight stable and integrated screws were removed for various reasons from 18 patients. The interface zone between bone and implant was investigated using X-rays, SEM, TEM and histology. The SEM study showed a very close spatial relationship between titanium and bone. The pattern of the anchorage of collagen filaments to titanium appeared to be similar to that of Sharpey's fibres to bone. No wear products were seen in the bone or soft tissues in spite of implant loading times up to 90 months. The soft tissues were also closely adhered to the titanium implant, thereby forming a biological seal, preventing microorganism infiltration along the implant. The implants in many cases had been allowed to permanently penetrate the gingiva and skin. This caused no adverse tissue effects. An intact bone-implant interface was analyzed by TEM, revealing a direct bone-to-implant interface contact also at the electron microscopic level, thereby suggesting the possibility of a direct chemical bonding between bone and titanium. It is concluded that the technique of osseointegration is a reliable type of cement-free bone anchorage for permanent prosthetic tissue substitutes. At present, this technique is being tried in clinical joint reconstruction. In order to achieve and to maintain such a direct contact between living bone and implant, threaded, unalloyed titanium screws of defined finish and geometry were inserted using a delicate surgical technique and were allowed to heal in situ, without loading, for a period of at least 3--4 months.

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Section: Irnpfant Loading Conditionsmentioning

confidence: 99%

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Albrektsson

Brånemark

Hansson

et al. 1981

Acta Orthopaedica Scandinavica

2,435

1,398

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“…Direcl bone-implant contact has been achieved by Branemark et al (1969) and Armitage et al (1971) using titanium implants, and by Wffirhaug & Zander (1956) using acrylic implants. In the present investigation more or less direct bone-implant contact was found in all firm implants.…”

Section: Discussionmentioning

confidence: 99%

Methylmethacrylate screw implants—radiographic, histological and fluorescence microscopic investigations in dogs

Wie

Solheim

Rhse

1975

J of Oral Rehabilitation

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Twenty-one methylmethacrylate screw implants were inserted in the jaws of three Labrador dogs. Clinical, radiographic, microscopic and fluorescence microscopic examinations were performed. Direct bone-implant contact was found in all firm implants, and the density of the alveolar bone increased towards the screw surface. In these areas no fibrous tissue was found between bone and implant. Horizontal fibres at the junction between the head and the neck of the implant seem to have impeded downgrowth of subepithelial granulation tissue.

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“…11 Perhaps immediate loading is the most important reason for the formation of connective tissue sheath seen around implants. [12][13][14] In much recent data, as compared with the scientific studies of the 1970s and 1980s, Perren 15 explained the same concept through strain theory, which states that "when the ends of a fractured bone are tightly compressed, then almost no movement should be allowed between the fragments, otherwise a stretch or a strain is produced which could destroy the new cells and vessels forming in the gap. In such cases, there is increased osteoclastic activity which enters through the resorption of bone increases over the critical threshold of strain of the regenerated tissue."…”

Section: Micromotion In Immediate Loadingmentioning

confidence: 99%

Deciphering All-on-4^® and Its Perspectives

Chug¹,

Mahesh²,

Shukla³

et al. 2017

International Journal of Oral Implantology &Amp; Clinical Research

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All-on-4 ® treatment concept has been widely accepted by implantologist and has become a common procedure in many dental practices. But is it a favorable technique and how long will the implants last when the entire frame work of 12 teeth is embedded in maxillary soft bone and immediately loaded? It is difficult and baseless to argue and conclude the benefits of All-on-4 ® as the literature lacks required data; nonetheless, this article has tried to provide readers an unbiased opinion, as the final choice of the treatment lies in the clinician's discretion keeping patient needs in consideration.

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An evaluation of early bone changes after the insertion of metal endosseous implants into the jaws of rhesus monkeys

Cited by 33 publications

References 14 publications

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Methylmethacrylate screw implants—radiographic, histological and fluorescence microscopic investigations in dogs

Deciphering All-on-4^® and Its Perspectives

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An evaluation of early bone changes after the insertion of metal endosseous implants into the jaws of rhesus monkeys

Cited by 33 publications

References 14 publications

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Osseointegrated Titanium Implants:Requirements for Ensuring a Long-Lasting, Direct Bone-to-Implant Anchorage in Man

Methylmethacrylate screw implants—radiographic, histological and fluorescence microscopic investigations in dogs

Deciphering All-on-4® and Its Perspectives

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Product

Resources

About

Deciphering All-on-4^® and Its Perspectives