During teaching and research work at the University of Oklahoma College of Dentistry, a group led by Fernando Luis Esteban Florez developed an adhesive resin with long-term antimicrobial activity, aimed at reducing the incidence of secondary caries at restoration margins. Secondary caries remains one of the primary reasons for the replacement of restorations (fillings and crowns) and, according to the authors, leads to tens of millions of restorative interventions annually and significant direct costs for patients. <\/p>\n
The work was conducted in collaboration with Oak Ridge National Laboratory, utilizing the resources of the Center for Nanophase Materials Sciences and the High Flux Isotope Reactor. Researchers engineered titanium dioxide (TiO\u2082) nanoparticles to enable their ability to release reactive oxygen species (ROS)\u2014potent antimicrobial agents\u2014within the adhesive matrix, to which bacteria cannot develop resistance. Dispersed in the dental adhesive resin, these particles were uniformly distributed and exhibited potent antibacterial activity without requiring light activation. <\/p>\n
Key technical elements of the methodology include controlling particle size and surface functionalization to achieve stable distribution within the polymer matrix, as well as evaluating ROS release and its antimicrobial effect in in vitro models.<\/p>\n
The authors describe the resulting material as the world’s first long-term antimicrobial adhesive based on modified TiO\u2082 nanoparticles. Under experimental conditions, the adhesive demonstrated sustained antimicrobial activity without the need for light activation, while the particles maintained uniform distribution within the resin. <\/p>\n
The technology’s potential for reducing the incidence of secondary caries and decreasing the need for restoration replacements is highlighted. Possible extended applications are also being considered: materials for whitening, antimicrobial coatings for medical devices, and coatings for public spaces. The development is patented, and commercialization negotiations are underway. <\/p>\n
For clinical dentists, the following practical aspects and verification questions are important before implementation:<\/p>\n
The technology utilizing ROS generation within the adhesive appears promising for reducing bacterial colonization at restoration margins and preventing secondary caries. However, in clinical practice, decisive factors will be data on its impact on adhesion and interface longevity, as well as confirmation of the absence of adverse biological effects from long-term contact with dental and periodontal tissues. During the implementation phase, it is advisable to focus on independent clinical trials, publications on the material’s long-term stability, and compatibility with existing restorative systems. <\/p>\n
In conclusion, the development of the modified TiO\u2082 adhesive represents a significant scientific and technological advancement with the potential to reduce the burden of secondary caries. However, detailed data on long-term efficacy, safety, and its impact on the mechanical properties of the adhesive system are necessary for clinical acceptance.<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction During teaching and research work at the University of Oklahoma College of Dentistry, a group led by Fernando Luis Esteban Florez developed an adhesive resin with long-term antimicrobial activity, aimed at reducing the incidence of secondary caries at restoration margins. Secondary caries remains one of the primary reasons for the replacement of restorations (fillings […]<\/p>\n","protected":false},"author":20,"featured_media":14128,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"quote","meta":{"pmpro_default_level":"","footnotes":""},"categories":[266],"tags":[],"class_list":["post-14132","post","type-post","status-publish","format-quote","has-post-thumbnail","hentry","category-new-in-dentistry","post_format-post-format-quote","pmpro-has-access"],"yoast_head":"\n