Contribution à l’étude de l’endommagement des connexions implantaires en odontologie prothétique

Abstract : This research based on the study of two levels of damage focused on the implant connection: firstly, the wear associated with the opening/closing cycle dedicated to the manufacturing process; secondly, the damage over the time, that is a fretting-corrosion study of dental implants in human saliva. During the tightening/loosening cycles, damage to all the components is present. The screws that include the majority of the complications have to be changed after 20 tightening cycles. The use of laboratory screws limits the damage and optimizes the preload value. When the prosthesis and the implant are assemblies, the damage appears thanks to fretting/corrosion (tribocorrosion) behavior. This phenomenon does involve synergistic wear and a modification of the microstructure on the fretting surfaces
Document type :
Theses
File URL :
http://docnum.univ-lorraine.fr/ulprive/DDOC_T_2018_0221_CORNE.pdf
Complete list of metadatas

https://hal.univ-lorraine.fr/tel-02125250
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Submitted on : Friday, May 10, 2019 - 11:49:47 AM
Last modification on : Friday, May 17, 2019 - 8:55:45 AM

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  • HAL Id : tel-02125250, version 1

Citation

Pascale Corne. Contribution à l’étude de l’endommagement des connexions implantaires en odontologie prothétique. Biomécanique [physics.med-ph]. Université de Lorraine, 2018. Français. ⟨NNT : 2018LORR0221⟩. ⟨tel-02125250⟩

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