[Adhesion of liners to dentin. In vivo experiments]

Research was performed in vivo on 42 vital teeth. Cavities of I and V Class where made, than restored with glass ionomer liners and composites. The teeth were extracted, stained and sectioned. Optic microscope did not show any stain under the ionomer liner, even in cases where composites were infiltrated. Electron microscope did not show any gap between ionomer liner and dentin.