IADR Abstract Archives
Provisional cements antibacterial effect in the presence of saliva
Objectives: Provisional crowns have an important role during the process of fixed partial dentures, examining the changes to be made before the final restoration concerning function, and esthetics.
It is recognized that even when provisional cements are used, marginal leakage still occurs between the cement and the dentin. This marginal leakage may jeopardize the success of the final restoration due to plaque and bacterial accumulation, which can cause secondary caries and inflammation of the surrounding tissues.
In this study we examined, in vitro, how the presence of saliva affects the antibacterial activity of the surface of dental provisional cements. In addition, experimental nanoparticles where incorporated into the cements and the modified cements were evaluated.
Methods: Direct contact test was used to evaluate bacterial outgrowth following surface contact with three commercial dental cements in the presence of saliva. Test bacteria were Streptococcus mutans and Actinomyces viscosus
Results: Results showed inhibition of S. mutans outgrowth in all tested cements in the presence of saliva. Only one cement inhibited A. viscosus growth only partially when saliva was presence. A. viscosus and S. mutans outgrowth was inhibited when experimental nanoparticles were incorporated in the tested cements.
Conclusions: Provisional cements antibacterial properties may be compromised in the presence of saliva. Thus, modifying provisional cements properties to be antibacterial may be advantageous.
It is recognized that even when provisional cements are used, marginal leakage still occurs between the cement and the dentin. This marginal leakage may jeopardize the success of the final restoration due to plaque and bacterial accumulation, which can cause secondary caries and inflammation of the surrounding tissues.
In this study we examined, in vitro, how the presence of saliva affects the antibacterial activity of the surface of dental provisional cements. In addition, experimental nanoparticles where incorporated into the cements and the modified cements were evaluated.
Methods: Direct contact test was used to evaluate bacterial outgrowth following surface contact with three commercial dental cements in the presence of saliva. Test bacteria were Streptococcus mutans and Actinomyces viscosus
Results: Results showed inhibition of S. mutans outgrowth in all tested cements in the presence of saliva. Only one cement inhibited A. viscosus growth only partially when saliva was presence. A. viscosus and S. mutans outgrowth was inhibited when experimental nanoparticles were incorporated in the tested cements.
Conclusions: Provisional cements antibacterial properties may be compromised in the presence of saliva. Thus, modifying provisional cements properties to be antibacterial may be advantageous.