Porous alumina for free-standing implants. Part I: Implant design and in vivo animal studies

Yamagami, Akiyoshi; Kotera, Shuhei; Ehara, Yuji; Nishio, Youichi

doi:10.1016/0022-3913(88)90384-8

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…1) [1,2] It has been shown that an alumina porous implant could support a dental prosthesis independently. [3,4,5] These implants showed very good clinical results. However, a 2-stage-type implant could not be produced for clinical use because of the low machinability of the sapphire.…”

Section: Introductionmentioning

confidence: 85%

The Effect of Surface Roughness Difference on Bone Integration of Anodic Oxidized Ti Alloy Implants

Yamagami¹,

Ehara²,

Kanda³

et al. 2006

Advances in Science and Technology

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At present, immediate loading of dental implants is of great interest. The key of this issue is how quickly implant can acquire firm fixation in the jaw bone, and how quickly the superstructure can be fabricated. In order to achieve these, it is necessary a large surface area of the implant and to promote early contact of the surrounding bone which can bear the load. In addition to this, anodic oxidization was carried out to prevent ion elution from titanium and titanium alloy in the body. The experiment was conducted with cylindrical Ti alloy test pieces of 4 different surface roughnesses (Ra=1.1μm, 1.2μm, 2.7μm, 4,7μm). These test pieces were treated by sandblasting and anodization, and implanted into the diaphysis of the femur of New Zealand white rabbits. Six weeks later, shear loading tests and histological examination were carried out. Strong interfacial bonding strength and active new bone formation were confirmed in the peripheral area of the test pieces having a surface roughness of Ra=2.7μm and 4,7μm. Judging from the stable fixation against the shear loading in the bone tissue seen in group C(Ra=2.7μm), it was

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Section: Introductionmentioning

confidence: 85%

The Effect of Surface Roughness Difference on Bone Integration of Anodic Oxidized Ti Alloy Implants

Yamagami¹,

Ehara²,

Kanda³

et al. 2006

Advances in Science and Technology

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Contemporary Periodontal Regenerative Treatment

de Santana,

Uzel,

de Santana

2023

Practical Periodontal Diagnosis and Treatment Planning

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Tissue reaction to alumina implants inserted into the tibiae of rats

Takeshita¹,

Morimoto²,

Suetsugu³

1993

J. Biomed. Mater. Res.

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We examined the tissue reaction to three alumina implants--single-crystal alumina (SA), dense polycrystal alumina (DPA), and porous polycrystal alumina (PPA)--inserted transcortically, extending into the medullary canal of rat tibiae, and assessed the quantitative differences in bone reaction using an image processing system. There was no difference in the degree of maturation of newly formed bone around the three kinds of alumina. SA and DPA were encapsulated with a continuous bone layer, but some bone tissue was attached focally around PPA. Bone trabeculae in the control site diminished in size and number chronologically. Multinucleated giant cells were observed on the surface of DPA and PPA, but not on SA. Tabulation of the quantitative evaluation indicated that SA showed the highest, DPA a lower, and PPA the lowest in bone contact rate, bone contact thickness, and bone contact area. These data suggest that SA is superior to the other two as an implant material.

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Porous alumina for free-standing implants. Part I: Implant design and in vivo animal studies

Cited by 7 publications

References 13 publications

The Effect of Surface Roughness Difference on Bone Integration of Anodic Oxidized Ti Alloy Implants

The Effect of Surface Roughness Difference on Bone Integration of Anodic Oxidized Ti Alloy Implants

Contemporary Periodontal Regenerative Treatment

Tissue reaction to alumina implants inserted into the tibiae of rats

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