Histomorphometric and removal torque analysis for TiO2-blasted titanium implants. An experimental study on dogs

K Gotfredsen; L Nimb; E Hjörting-Hansen; J S Jensen; A Holmén

Histomorphometric and removal torque analysis for TiO2-blasted titanium implants. An experimental study on dogs

K Gotfredsen, L Nimb, E Hjörting-Hansen, J S Jensen, A Holmén

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

192 Citationer (Scopus)

Abstract

Udgivelsesdato: 1992-Jun

Originalsprog	Engelsk
Tidsskrift	Clinical Oral Implants Research
Vol/bind	3
Udgave nummer	2
Sider (fra-til)	77-84
Antal sider	7
ISSN	0905-7161
Status	Udgivet - 1992

Bibliografisk note

Keywords: Animals; Bicuspid; Coated Materials, Biocompatible; Dental Implantation, Endosseous; Dental Implants; Dental Materials; Dental Prosthesis Design; Dogs; Mandible; Microscopy, Electron, Scanning; Osseointegration; Random Allocation; Stress, Mechanical; Surface Properties; Titanium; Tooth Socket; Torque; Wound Healing

Citationsformater

@article{0d5ff020ec0f11dfb6d2000ea68e967b,

title = "Histomorphometric and removal torque analysis for TiO2-blasted titanium implants. An experimental study on dogs",

abstract = "The aim of the present study was to compare the anchorage of TiO2-blasted screw and cylindrical implants with conventionally used machine-produced screw and cylindrical implants inserted immediately in extraction sockets on dogs. 6 adult mongrel dogs had 3rd and 4th mandibular premolars extracted bilaterally and 24 commercial pure titanium implants were placed immediately in extraction sockets and covered with mucoperiosteum. Each dog had inserted 4 implants: 1 screw implant and 1 cylindrical implant blasted with titanium-dioxide-particles; 1 screw implant and 1 cylindrical implant with machine-produced (m.p.) surface (controls). After a healing period of 12 weeks, 16 implants from 4 animals were used for removal torque test, which demonstrated that significantly higher removal torque force was needed to unscrew the implants blasted with titanium-dioxide-particles, than the normal m.p. implants. The medians for the TiO2-blasted screw and cylindrical implants were > 150 Ncm and 105 Ncm, respectively, while the values for the m.p. implants were 60 Ncm and 35 Ncm, respectively. The SEM investigation demonstrated a high irregularity of the TiO2-blasted surface compared to the machined surface. The Ra and Rz values for surface roughness were higher for the TiO2-blasted implants than for the normal m.p. implants. Histomorphometrically, the arithmetic mean of the direct bone-implant contact fraction was 69%. There was no significant difference in direct bone-implant contact length fraction between TiO2-blasted implants and the control implants. The implants blasted with titanium-dioxide-particles in this study showed a better anchorage than implants with a machine-produced surface. The screw implants showed a better anchorage than the cylindrical implants.",

author = "K Gotfredsen and L Nimb and E Hj{\"o}rting-Hansen and Jensen, {J S} and A Holm{\'e}n",

note = "Keywords: Animals; Bicuspid; Coated Materials, Biocompatible; Dental Implantation, Endosseous; Dental Implants; Dental Materials; Dental Prosthesis Design; Dogs; Mandible; Microscopy, Electron, Scanning; Osseointegration; Random Allocation; Stress, Mechanical; Surface Properties; Titanium; Tooth Socket; Torque; Wound Healing",

year = "1992",

language = "English",

volume = "3",

pages = "77--84",

journal = "Clinical Oral Implants Research",

issn = "0905-7161",

publisher = "Wiley-Blackwell",

number = "2",

}

TY - JOUR

T1 - Histomorphometric and removal torque analysis for TiO2-blasted titanium implants. An experimental study on dogs

AU - Gotfredsen, K

AU - Nimb, L

AU - Hjörting-Hansen, E

AU - Jensen, J S

AU - Holmén, A

N1 - Keywords: Animals; Bicuspid; Coated Materials, Biocompatible; Dental Implantation, Endosseous; Dental Implants; Dental Materials; Dental Prosthesis Design; Dogs; Mandible; Microscopy, Electron, Scanning; Osseointegration; Random Allocation; Stress, Mechanical; Surface Properties; Titanium; Tooth Socket; Torque; Wound Healing

PY - 1992

Y1 - 1992

N2 - The aim of the present study was to compare the anchorage of TiO2-blasted screw and cylindrical implants with conventionally used machine-produced screw and cylindrical implants inserted immediately in extraction sockets on dogs. 6 adult mongrel dogs had 3rd and 4th mandibular premolars extracted bilaterally and 24 commercial pure titanium implants were placed immediately in extraction sockets and covered with mucoperiosteum. Each dog had inserted 4 implants: 1 screw implant and 1 cylindrical implant blasted with titanium-dioxide-particles; 1 screw implant and 1 cylindrical implant with machine-produced (m.p.) surface (controls). After a healing period of 12 weeks, 16 implants from 4 animals were used for removal torque test, which demonstrated that significantly higher removal torque force was needed to unscrew the implants blasted with titanium-dioxide-particles, than the normal m.p. implants. The medians for the TiO2-blasted screw and cylindrical implants were > 150 Ncm and 105 Ncm, respectively, while the values for the m.p. implants were 60 Ncm and 35 Ncm, respectively. The SEM investigation demonstrated a high irregularity of the TiO2-blasted surface compared to the machined surface. The Ra and Rz values for surface roughness were higher for the TiO2-blasted implants than for the normal m.p. implants. Histomorphometrically, the arithmetic mean of the direct bone-implant contact fraction was 69%. There was no significant difference in direct bone-implant contact length fraction between TiO2-blasted implants and the control implants. The implants blasted with titanium-dioxide-particles in this study showed a better anchorage than implants with a machine-produced surface. The screw implants showed a better anchorage than the cylindrical implants.

AB - The aim of the present study was to compare the anchorage of TiO2-blasted screw and cylindrical implants with conventionally used machine-produced screw and cylindrical implants inserted immediately in extraction sockets on dogs. 6 adult mongrel dogs had 3rd and 4th mandibular premolars extracted bilaterally and 24 commercial pure titanium implants were placed immediately in extraction sockets and covered with mucoperiosteum. Each dog had inserted 4 implants: 1 screw implant and 1 cylindrical implant blasted with titanium-dioxide-particles; 1 screw implant and 1 cylindrical implant with machine-produced (m.p.) surface (controls). After a healing period of 12 weeks, 16 implants from 4 animals were used for removal torque test, which demonstrated that significantly higher removal torque force was needed to unscrew the implants blasted with titanium-dioxide-particles, than the normal m.p. implants. The medians for the TiO2-blasted screw and cylindrical implants were > 150 Ncm and 105 Ncm, respectively, while the values for the m.p. implants were 60 Ncm and 35 Ncm, respectively. The SEM investigation demonstrated a high irregularity of the TiO2-blasted surface compared to the machined surface. The Ra and Rz values for surface roughness were higher for the TiO2-blasted implants than for the normal m.p. implants. Histomorphometrically, the arithmetic mean of the direct bone-implant contact fraction was 69%. There was no significant difference in direct bone-implant contact length fraction between TiO2-blasted implants and the control implants. The implants blasted with titanium-dioxide-particles in this study showed a better anchorage than implants with a machine-produced surface. The screw implants showed a better anchorage than the cylindrical implants.

M3 - Journal article

C2 - 15900672

SN - 0905-7161

VL - 3

SP - 77

EP - 84

JO - Clinical Oral Implants Research

JF - Clinical Oral Implants Research

IS - 2

ER -