Optimum surface properties of oxidized implants for reinforcement of osseointegration: surface chemistry, oxide thickness, porosity, roughness, and crystal structure

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Sul, Young-Taeg,1960Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för biomaterialvetenskap,Institute of Surgical Sciences, Department of Biomaterials (författare)

Optimum surface properties of oxidized implants for reinforcement of osseointegration: surface chemistry, oxide thickness, porosity, roughness, and crystal structure

Artikel/kapitelEngelska2005

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Chicago, Ill.Quintessence Pub. Co.2005

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LIBRIS-ID:oai:gup.ub.gu.se/48375
https://gup.ub.gu.se/publication/48375URI
https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-4363URI

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Språk:engelska

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Ämneskategori:art swepub-publicationtype

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PURPOSE: To investigate detailed surface characterization of oxidized implants in a newly invented electrolyte system and to determine optimal surface oxide properties to enhance the bone response in rabbits. MATERIALS AND METHODS: A total of 100 screw-type titanium implants were prepared and divided into 1 control group (machine-turned implants) and 4 test groups (magnesium ion-incorporated oxidized implants). Forty implants were used for surface analyses. A total of 60 implants, 12 implants from each group, were placed in the tibiae of 10 New Zealand white rabbits and measured with a removal torque test after a healing period of 6 weeks. RESULTS: For the test groups, the oxide thicknesses ranged from about 1,000 to 5,800 nm; for the control group, mean oxide thickness was about 17 nm. The surface morphology showed porous structures for test groups and nonporous barrier film for the control group. Pore diameter ranged from < or = 0.5 microm to < or = 3.0 microm. In regard to surface roughness, arithmetic average height deviation (Sa) values varied from 0.68 to 0.98 microm for test implants and 0.55 microm for control implants; developed surface ratio (Sdr) values ranged from 10.6% to 46% for the test groups and were about 10.6% for the control group. A mixture of anatase and rutile-type crystals were observed in the test groups; amorphous-type crystals were observed in the control group. After a healing period of 6 weeks, removal torque measurements in all 4 test groups demonstrated significantly greater implant integration as compared to machine-turned control implants (P < or = .033). DISCUSSION: Determinant oxide properties of oxidized implants are discussed in association with bone responses. Of all surface properties, RTVs were linearly increased as relative atomic concentrations of magnesium ion increase. CONCLUSIONS: Surface properties of the oxidized implants in the present study, especially surface chemistry, influenced bone responses. The surface chemistry of the optimal oxidized implant should be composed of approximately 9% magnesium at relative atomic concentration in titanium oxide matrix and have an oxide thickness of approximately 1,000 to 5,000 nm, a porosity of about 24%, and a surface roughness of about 0.8 microm in Sa and 27% to 46% in Sdr; its oxide crystal structure should be a mixture of anatase- and rutile-phase crystals.

Ämnesord och genrebeteckningar

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Odontologi hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Dentistry hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Bearbetnings-, yt- och fogningsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Manufacturing, Surface and Joining Technology hsv//eng
Animals
Biocompatible Materials/chemistry
Crystallography
*Dental Implants
Dental Materials/*chemistry
*Dental Prosthesis Design
Electron Probe Microanalysis
Magnesium/chemistry
Microscopy
Electron
Scanning
Osseointegration/*physiology
Oxides/chemistry
Porosity
Rabbits
Stress
Mechanical
Surface Properties
Tibia/physiopathology/surgery
Titanium/*chemistry
Torque
Wound Healing/physiology
MEDICINE
Medicine

Biuppslag (personer, institutioner, konferenser, titlar ...)

Johansson, Carina B.,1955Örebro universitet,Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för biomaterialvetenskap,Institute of Surgical Sciences, Department of Biomaterials,Institutionen för klinisk medicin(Swepub:oru)cnjn (författare)
Wennerberg, Ann,1955Gothenburg University,Göteborgs universitet,Odontologiska institutionen, Avdelningen för oral protetik/odontologisk materialvetenskap,Institutionen för de kirurgiska disciplinerna, Avdelningen för biomaterialvetenskap,Institute of Odontology, Department of Prosthetic Dentistry/Dental Technology,Institute of Surgical Sciences, Department of Biomaterials(Swepub:gu)xwenan (författare)
Cho, Lee Ra (författare)
Chang, B. S. (författare)
Albrektsson, Tomas,1945Gothenburg University,Göteborgs universitet,Institutionen för de kirurgiska disciplinerna, Avdelningen för biomaterialvetenskap,Institute of Surgical Sciences, Department of Biomaterials(Swepub:gu)xalbto (författare)
Göteborgs universitetInstitutionen för de kirurgiska disciplinerna, Avdelningen för biomaterialvetenskap (creator_code:org_t)

Sammanhörande titlar

Ingår i:International Journal of Oral & Maxillofacial ImplantsChicago, Ill. : Quintessence Pub. Co.20:3, s. 349-590882-27861942-4434

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Av författaren/redakt...: Sul, Young-Taeg, ...; Johansson, Carin ...; Wennerberg, Ann, ...; Cho, Lee Ra; Chang, B. S.; Albrektsson, Tom ...

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MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Odontologi

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Bearbetnings yt ...

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Av lärosätet: Göteborgs universitet; Örebro universitet

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