A new approach to influence contact angle and surface free energy of resin-based dental restorative materials

Is secondary caries with composites a material-based problem?

“…Some research has also focused on changing other surface characteristics of composites. Rutterman et al tested experimental composites modified with low-surface tension agents and observed decreased bacterial adhesion and cell viability [136,226].…”

Wettability modification of human tooth surface by water and UV and electron-beam radiation

“…In dry samples, the low contact angle values observed can be attributed to an inherent hydrophilicity of dry materials. The inorganic component of tooth structure (i.e., HAP) has a strong affinity to water [21], so during first wetting, the hydrophilicity might be due to hydrogen bonds between HAP and absorbed water [22]. Following Aronov [9,12], human tooth material surfaces and HAP surfaces should present a certain amount of electric charge; this electric charge is produced by polarization of the surface's atoms.…”

Surface energy of bovine dentin and enamel by means of inverse gas chromatography

“…Depending on the prevailing type of component of surface energy (dispersive or polar) the bonded surfaces will connect with dispersive interactions or acid-base interactions. Surface energy, correlated with materials wettability is also responsible for bacterial adherence [13]. This phenomenon is a cause of plaque formation, which initiates the caries formation process [1].…”