Ultramorphological evaluation of the dentin acid-base resistant zone of two-step self-etching systems after long-term storage in water.

Purpose: To evaluate the morphological changes in the acid-base resistant zone (ABRZ) at the resin/dentin interface after long-term storage in water.

Materials And Methods: Two-step self-etching adhesive systems, Clearfil SE Bond (SE) and Clearfil Protect Bond (PB) (Kuraray Medical) were used. Human dentin disk sandwiches with resin composite were prepared, sectioned, and embedded in epoxy resin.

Microtensile bond strengths of a dual-cure resin cement to dentin resin-coated with an all-in-one adhesive system using two curing modes.

This study evaluated the effect of resin coating using an all-in-one adhesive system on the dentin bond strength of a dual-cure resin cement after different curing modes. Human molars were ground to obtain flat dentin surfaces and divided into three groups: untreated as a control and resin-coated with either a single- or double-application of an all-in-one adhesive (Tokuyama Bond Force). The specimens were bonded to indirect composite disks using a dual-cure resin cement (Bistite II) activated by dual-cure or self-cure modes.