Microdamage and titanium particulate release from the grinding of dental implants
Abstract
This study investigated the effects of the grinding process in dental implant procedures with regard to microdamage in neighboring bone and the distribution of titanium particulate debris. Specifically, two implant types that required differing amounts of grinding were examined—the Zimmer One-Piece Implant (ZOP) and a generic implant test part (ITP). Unlike the ITP implant, the prosthetic section of the ZOP implant is specially contoured so that it requires significantly less grinding during the implantation procedure. For the study, the dental implants were inserted into bovine tibial bone samples as a surrogate jaw bone model. To assess the amount of microdamage, samples were stained before and after the grinding process and analyzed using UV fluorescent microscopy. To determine the size distribution of particulate debris, exposed screw grooves from fractured bone samples were analyzed using scanning electron microscopy (SEM). Energy dispersive x-ray spectroscopy (EDX) was used to confirm the presence of titanium, and the SEM images were analyzed to quantify the particle size distribution. In addition, images of the scattered debris were analyzed to assess the amount of particle migration into the bone. The results indicated that the amount of grinding during the implantation procedure had negligible effects on both the amount of microdamage and the distribution of particulate debris. The results also suggested that a substantial amount of debris was generated during implant insertion rather than grinding and that negligible particle migration occurred.
Degree
M.S.B.M.E.
Advisors
Akkus, Purdue University.
Subject Area
Dentistry|Biomechanics
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