Adhesiverestorationsarebasedontheuseofmaterials,whichhavethecapacitytobondtooth effectively. This is possible due to a polymerizing hybrid layer interface createdby the use of the Etch&Rinse (ERAs) and self-etching adhesives (SEAs). Bonding usingERAs include the acid-etching removal of the mineral phase from the substrates ofenamelanddentine.Ahybridlayerresultsbyfillingthevoidsleftbymineralsbymeansof adhesive monomers. However, etching dentine may result in too much deminerali-zation and wetness with discrepancies in reinforcement at the bottom of hybrid layer.SEAs avoid the separate etching phase of ERAs using acidic functional monomers. Inthe two-step SEAs, hybridization is created by the application of a primer of differentpH acidity, followed by an adhesive resin. In the ‘One-Step SEAs’, acidic and adhesivemonomersaremixedinthesamebottletherebycausinghybridizationatthesametime.10-MDP mild SEAs represent the better bonding technology in dentistry due to theability to form a strong chemical bond in tooth tissue. However, adhesive restorationshave high vulnerability in the oral environment, which have been attributed to theesterase activity of Streptococcus mutans and hydrolysis by matrix metalloproteinase.
Adhesive Restorations and the Oral Environmental Behaviour
ERAMO, Stefano
2016
Abstract
Adhesiverestorationsarebasedontheuseofmaterials,whichhavethecapacitytobondtooth effectively. This is possible due to a polymerizing hybrid layer interface createdby the use of the Etch&Rinse (ERAs) and self-etching adhesives (SEAs). Bonding usingERAs include the acid-etching removal of the mineral phase from the substrates ofenamelanddentine.Ahybridlayerresultsbyfillingthevoidsleftbymineralsbymeansof adhesive monomers. However, etching dentine may result in too much deminerali-zation and wetness with discrepancies in reinforcement at the bottom of hybrid layer.SEAs avoid the separate etching phase of ERAs using acidic functional monomers. Inthe two-step SEAs, hybridization is created by the application of a primer of differentpH acidity, followed by an adhesive resin. In the ‘One-Step SEAs’, acidic and adhesivemonomersaremixedinthesamebottletherebycausinghybridizationatthesametime.10-MDP mild SEAs represent the better bonding technology in dentistry due to theability to form a strong chemical bond in tooth tissue. However, adhesive restorationshave high vulnerability in the oral environment, which have been attributed to theesterase activity of Streptococcus mutans and hydrolysis by matrix metalloproteinase.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
