Stress distribution in Co-Cr implant frameworks after laser or TIG welding.
Identifieur interne : 004760 ( Ncbi/Checkpoint ); précédent : 004759; suivant : 004761Stress distribution in Co-Cr implant frameworks after laser or TIG welding.
Auteurs : Gabriela Cassaro De Castro [Brésil] ; Cleudmar Amaral De Araújo ; Marcelo Ferraz Mesquita ; Rafael Leonardo Xediek Consani ; Mauro Antônio De Arruda N BiloSource :
- Brazilian dental journal [ 1806-4760 ] ; 2013.
Descripteurs français
- KwdFr :
- Alliages de chrome (), Conception d'implant dentaire et de pilier, Contrainte mécanique, Gaz plasmas, Humains, Implants dentaires, Lasers, Mandibule (anatomopathologie), Modèles dentaires, Mâchoire édentée (rééducation et réadaptation), Propriétés de surface, Prothèse dentaire implanto-portée, Résines époxy (), Soudage (), Soudage (instrumentation), Soudage dentaire (), Soudage dentaire (instrumentation), Technique de coulée dentaire, Test de matériaux.
- MESH :
- anatomopathologie : Mandibule.
- rééducation et réadaptation : Mâchoire édentée.
- Alliages de chrome, Conception d'implant dentaire et de pilier, Contrainte mécanique, Gaz plasmas, Humains, Implants dentaires, Lasers, Modèles dentaires, Propriétés de surface, Prothèse dentaire implanto-portée, Résines époxy, Soudage, Soudage dentaire, Technique de coulée dentaire, Test de matériaux.
English descriptors
- KwdEn :
- Chromium Alloys (chemistry), Dental Casting Technique, Dental Implant-Abutment Design, Dental Implants, Dental Models, Dental Prosthesis, Implant-Supported, Dental Soldering (instrumentation), Dental Soldering (methods), Epoxy Resins (chemistry), Humans, Jaw, Edentulous (rehabilitation), Lasers, Mandible (pathology), Materials Testing, Plasma Gases, Stress, Mechanical, Surface Properties, Welding (instrumentation), Welding (methods).
- MESH :
- chemical , chemistry : Chromium Alloys, Epoxy Resins.
- instrumentation : Dental Soldering, Welding.
- methods : Dental Soldering, Welding.
- pathology : Mandible.
- rehabilitation : Jaw, Edentulous.
- Dental Casting Technique, Dental Implant-Abutment Design, Dental Implants, Dental Models, Dental Prosthesis, Implant-Supported, Humans, Lasers, Materials Testing, Plasma Gases, Stress, Mechanical, Surface Properties.
Abstract
Lack of passivity has been associated with biomechanical problems in implant-supported prosthesis. The aim of this study was to evaluate the passivity of three techniques to fabricate an implant framework from a Co-Cr alloy by photoelasticity. The model was obtained from a steel die simulating an edentulous mandible with 4 external hexagon analog implants with a standard platform. On this model, five frameworks were fabricated for each group: a monoblock framework (control), laser and TIG welding frameworks. The photoelastic model was made from a flexible epoxy resin. On the photoelastic analysis, the frameworks were bolted onto the model for the verification of maximum shear stress at 34 selected points around the implants and 5 points in the middle of the model. The stresses were compared all over the photoelastic model, between the right, left, and center regions and between the cervical and apical regions. The values were subjected to two-way ANOVA, and Tukey's test (α=0.05). There was no significant difference among the groups and studied areas (p>0.05). It was concluded that the stresses generated around the implants were similar for all techniques.
DOI: 10.1590/0103-6440201302112
PubMed: 23780359
Affiliations:
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pubmed:23780359Le document en format XML
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The aim of this study was to evaluate the passivity of three techniques to fabricate an implant framework from a Co-Cr alloy by photoelasticity. The model was obtained from a steel die simulating an edentulous mandible with 4 external hexagon analog implants with a standard platform. On this model, five frameworks were fabricated for each group: a monoblock framework (control), laser and TIG welding frameworks. The photoelastic model was made from a flexible epoxy resin. On the photoelastic analysis, the frameworks were bolted onto the model for the verification of maximum shear stress at 34 selected points around the implants and 5 points in the middle of the model. The stresses were compared all over the photoelastic model, between the right, left, and center regions and between the cervical and apical regions. The values were subjected to two-way ANOVA, and Tukey's test (α=0.05). There was no significant difference among the groups and studied areas (p>0.05). It was concluded that the stresses generated around the implants were similar for all techniques.</div></front></TEI><affiliations><list><country><li>Brésil</li></country><region><li>État de São Paulo</li></region></list><tree><noCountry><name sortKey="Consani, Rafael Leonardo Xediek" sort="Consani, Rafael Leonardo Xediek" uniqKey="Consani R" first="Rafael Leonardo Xediek" last="Consani">Rafael Leonardo Xediek Consani</name><name sortKey="De Araujo, Cleudmar Amaral" sort="De Araujo, Cleudmar Amaral" uniqKey="De Araujo C" first="Cleudmar Amaral" last="De Araújo">Cleudmar Amaral De Araújo</name><name sortKey="Mesquita, Marcelo Ferraz" sort="Mesquita, Marcelo Ferraz" uniqKey="Mesquita M" first="Marcelo Ferraz" last="Mesquita">Marcelo Ferraz Mesquita</name><name sortKey="N Bilo, Mauro Antonio De Arruda" sort="N Bilo, Mauro Antonio De Arruda" uniqKey="N Bilo M" first="Mauro Antônio De Arruda" last="N Bilo">Mauro Antônio De Arruda N Bilo</name></noCountry><country name="Brésil"><region name="État de São Paulo"><name sortKey="De Castro, Gabriela Cassaro" sort="De Castro, Gabriela Cassaro" uniqKey="De Castro G" first="Gabriela Cassaro" last="De Castro">Gabriela Cassaro De Castro</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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