Adhesion Of A Glass-Ionomer Root Canal Sealer To Human Dentine

ABSTRACT This in vitro study evaluated the effect of smear layer removal on adhesion to human dentine of Ketac‐Endo, Grossman, and Sealer 26 root canal sealers. A total of 60 extracted human maxillary and mandibular molars with their crowns ground flat were used. The teeth were divided into two groups: Group I, the dentine surface received no treatment; Group 2, EDTA‐C was applied to the dentine surface for 5 min. Ten samples were tested for each sealer and each group. Adhesion was measured with a Universal Testing Machine. Sealer 26 showed greater adhesion both with and without smear layer (p < 0.01). Ketac‐Endo and Grossman sealers were statistically equal, having the lowest values of adhesion. Application of EDTA‐C did not alter the adhesion of Ketac‐Endo and Grossman sealers. However, the use of EDTA‐C increased the adhesion of Sealer 26. The epoxy resin‐based root canal sealer (Sealer 26) adhered better to dentine prepared with and without EDTA‐C than glass‐ionomer‐based sealers and the zinc oxide eugenol‐based (Ketac‐Endo and Grossman) sealers.