Effect of a new liner/base on human dentin permeability

摘要: Abstract Objectives Resin-modified glass ionomers (RMGI) have demonstrated clinical success in their ability to minimize post-operative sensitivity of restorations. RMGIs been recently introduced as paste-liquid systems for convenience usage. The objective this study was measure the a new RMGI liner/base reduce fluid flow through human dentin. Methods Dentin permeability measured on crown sections etched dentin, using dentin model exposed tubules typical root sensitivity, and permitting measurement maximum permeability. In one group, coated with RMGI, pre- post-treatment second smear layer created sandpaper, then samples were RMGI; smeared Samples from each group sectioned examined via scanning electron microscopy (SEM). Results significantly reduced exhibited excellent seal either or open tubules. SEM images show evidence that infiltrated resin during placement, penetrated tubules, formed tags acid-etched Conclusions Based these results, combined previous research adhesion microleakage, it is concluded should