Reverse torque failure of screw-shaped implants in baboons: baseline data for abutment torque application.
Identifieur interne : 009241 ( Ncbi/Curation ); précédent : 009240; suivant : 009242Reverse torque failure of screw-shaped implants in baboons: baseline data for abutment torque application.
Auteurs : A B Carr [États-Unis] ; P E Larsen ; E. Papazoglou ; E. McglumphySource :
- The International journal of oral & maxillofacial implants [ 0882-2786 ]
Descripteurs français
- KwdFr :
- Alliage dentaire (), Animaux, Conception de prothèse dentaire, Contrainte mécanique, Durapatite (), Défaillance de prothèse, Femelle, Implants dentaires, Mandibule (), Maxillaire (), Mâchoire édentée (), Papio, Piliers dentaires, Pose d'implant dentaire endo-osseux, Propriétés de surface, Rotation, Sécurité du matériel, Test de matériaux, Titane ().
- MESH :
- Alliage dentaire, Animaux, Conception de prothèse dentaire, Contrainte mécanique, Durapatite, Défaillance de prothèse, Femelle, Implants dentaires, Mandibule, Maxillaire, Mâchoire édentée, Papio, Piliers dentaires, Pose d'implant dentaire endo-osseux, Propriétés de surface, Rotation, Sécurité du matériel, Test de matériaux, Titane.
English descriptors
- KwdEn :
- Animals, Dental Abutments, Dental Alloys (chemistry), Dental Implantation, Endosseous, Dental Implants, Dental Prosthesis Design, Durapatite (chemistry), Equipment Safety, Female, Jaw, Edentulous (surgery), Mandible (surgery), Materials Testing, Maxilla (surgery), Papio, Prosthesis Failure, Rotation, Stress, Mechanical, Surface Properties, Titanium (chemistry).
- MESH :
- chemical , chemistry : Dental Alloys, Durapatite, Titanium.
- surgery : Jaw, Edentulous, Mandible, Maxilla.
- Animals, Dental Abutments, Dental Implantation, Endosseous, Dental Implants, Dental Prosthesis Design, Equipment Safety, Female, Materials Testing, Papio, Prosthesis Failure, Rotation, Stress, Mechanical, Surface Properties.
Abstract
Torque failure for endosseous implants has been used as a biomechanical measure of anchorage, though the significance of such data is not known. A practical understanding of the resistance to torque failure of implant-tissue interfaces at stage 2 surgery would help in assigning torque levels for implant abutment-screw fastening. The purpose of this study was to measure torque failure levels of commercially pure (CP) titanium, Ti-6Al-4V, hydroxyapatite-coated (HA-coated) screw-shaped implants placed into the maxillae and mandibles of baboons. Implants identical in size were placed into the edentulous posterior maxillae and mandibles of six female baboons (n = 37 each group) using a standardized surgical protocol. Reverse-torque data were collected at postinsertion time intervals ranging from 3 to 4 months using a counterclockwise torque driver and the data were analyzed (repeated measures ANOVA) for torque differences related to time, biomaterial, and jaw. The HA-coated implants exhibited significantly greater torque-removal values compared to both metallic implants (HA: 186.0 Ncm [50.1]; Ti-6Al-4V: 78.6 Ncm [18.1]; CP Ti 74.0 Ncm [24.4]). Analysis of torque interactions with jaw showed no significant difference; however, the mandible was found to be greater than the maxilla in torque resistance for all groups tested. Understanding the risks in inferring animal data to human application, the clinical implications of these data suggest that the recommended torque level of 35 Ncm for abutment fastening may provide a margin of safety for most implants of similar design and material as used in this study.(ABSTRACT TRUNCATED AT 250 WORDS)
PubMed: 7744435
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Papazoglou</name></author><author><name sortKey="Mcglumphy, E" sort="Mcglumphy, E" uniqKey="Mcglumphy E" first="E" last="Mcglumphy">E. Mcglumphy</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="????"><PubDate><MedlineDate>1995 Mar-Apr</MedlineDate></PubDate></date><idno type="RBID">pubmed:7744435</idno><idno type="pmid">7744435</idno><idno type="wicri:Area/PubMed/Corpus">004288</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">004288</idno><idno type="wicri:Area/PubMed/Curation">004288</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">004288</idno><idno type="wicri:Area/PubMed/Checkpoint">004288</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">004288</idno><idno type="wicri:Area/Ncbi/Merge">009241</idno><idno type="wicri:Area/Ncbi/Curation">009241</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Reverse torque failure of screw-shaped implants in baboons: baseline data for abutment torque application.</title><author><name sortKey="Carr, A B" sort="Carr, A B" uniqKey="Carr A" first="A B" last="Carr">A B Carr</name><affiliation wicri:level="1"><nlm:affiliation>Section of Restorative and Prosthetic Dentistry, Ohio State University College of Dentistry, Columbus 43210-1241, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Section of Restorative and Prosthetic Dentistry, Ohio State University College of Dentistry, Columbus 43210-1241</wicri:regionArea><wicri:noRegion>Columbus 43210-1241</wicri:noRegion></affiliation></author><author><name sortKey="Larsen, P E" sort="Larsen, P E" uniqKey="Larsen P" first="P E" last="Larsen">P E Larsen</name></author><author><name sortKey="Papazoglou, E" sort="Papazoglou, E" uniqKey="Papazoglou E" first="E" last="Papazoglou">E. Papazoglou</name></author><author><name sortKey="Mcglumphy, E" sort="Mcglumphy, E" uniqKey="Mcglumphy E" first="E" last="Mcglumphy">E. Mcglumphy</name></author></analytic><series><title level="j">The International journal of oral & maxillofacial implants</title><idno type="ISSN">0882-2786</idno></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Dental Abutments</term><term>Dental Alloys (chemistry)</term><term>Dental Implantation, Endosseous</term><term>Dental Implants</term><term>Dental Prosthesis Design</term><term>Durapatite (chemistry)</term><term>Equipment Safety</term><term>Female</term><term>Jaw, Edentulous (surgery)</term><term>Mandible (surgery)</term><term>Materials Testing</term><term>Maxilla (surgery)</term><term>Papio</term><term>Prosthesis Failure</term><term>Rotation</term><term>Stress, Mechanical</term><term>Surface Properties</term><term>Titanium (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Alliage dentaire ()</term><term>Animaux</term><term>Conception de prothèse dentaire</term><term>Contrainte mécanique</term><term>Durapatite ()</term><term>Défaillance de prothèse</term><term>Femelle</term><term>Implants dentaires</term><term>Mandibule ()</term><term>Maxillaire ()</term><term>Mâchoire édentée ()</term><term>Papio</term><term>Piliers dentaires</term><term>Pose d'implant dentaire endo-osseux</term><term>Propriétés de surface</term><term>Rotation</term><term>Sécurité du matériel</term><term>Test de matériaux</term><term>Titane ()</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Dental Alloys</term><term>Durapatite</term><term>Titanium</term></keywords><keywords scheme="MESH" qualifier="surgery" xml:lang="en"><term>Jaw, Edentulous</term><term>Mandible</term><term>Maxilla</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Dental Abutments</term><term>Dental Implantation, Endosseous</term><term>Dental Implants</term><term>Dental Prosthesis Design</term><term>Equipment Safety</term><term>Female</term><term>Materials Testing</term><term>Papio</term><term>Prosthesis Failure</term><term>Rotation</term><term>Stress, Mechanical</term><term>Surface Properties</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Alliage dentaire</term><term>Animaux</term><term>Conception de prothèse dentaire</term><term>Contrainte mécanique</term><term>Durapatite</term><term>Défaillance de prothèse</term><term>Femelle</term><term>Implants dentaires</term><term>Mandibule</term><term>Maxillaire</term><term>Mâchoire édentée</term><term>Papio</term><term>Piliers dentaires</term><term>Pose d'implant dentaire endo-osseux</term><term>Propriétés de surface</term><term>Rotation</term><term>Sécurité du matériel</term><term>Test de matériaux</term><term>Titane</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Torque failure for endosseous implants has been used as a biomechanical measure of anchorage, though the significance of such data is not known. A practical understanding of the resistance to torque failure of implant-tissue interfaces at stage 2 surgery would help in assigning torque levels for implant abutment-screw fastening. The purpose of this study was to measure torque failure levels of commercially pure (CP) titanium, Ti-6Al-4V, hydroxyapatite-coated (HA-coated) screw-shaped implants placed into the maxillae and mandibles of baboons. Implants identical in size were placed into the edentulous posterior maxillae and mandibles of six female baboons (n = 37 each group) using a standardized surgical protocol. Reverse-torque data were collected at postinsertion time intervals ranging from 3 to 4 months using a counterclockwise torque driver and the data were analyzed (repeated measures ANOVA) for torque differences related to time, biomaterial, and jaw. The HA-coated implants exhibited significantly greater torque-removal values compared to both metallic implants (HA: 186.0 Ncm [50.1]; Ti-6Al-4V: 78.6 Ncm [18.1]; CP Ti 74.0 Ncm [24.4]). Analysis of torque interactions with jaw showed no significant difference; however, the mandible was found to be greater than the maxilla in torque resistance for all groups tested. Understanding the risks in inferring animal data to human application, the clinical implications of these data suggest that the recommended torque level of 35 Ncm for abutment fastening may provide a margin of safety for most implants of similar design and material as used in this study.(ABSTRACT TRUNCATED AT 250 WORDS)</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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