[Nanoleakage at the resin-dental interface of four self-etching adhesives].

Objective: To evaluate the nanoleakage and ultramorphology of four self-etching adhesives.

Methods: Sixteen freshly extracted, caries-free human third molars were selected. A flat dentin surface was exposed by removing occlusal enamel.

[Experimental study on pulp revitalization of Beagle dog's immature permanent teeth after pulpectomy].

Objective: To observe the process of pulp revitalization of immature permanent teeth after pulpectomy.

Methods: Thirty-two single-rooted teeth with open apices from 4 Beagle dogs aged 4 months were included in the study. The pulpal tissues of 8 front teeth with single root of each dog were removed, and a blood clot was produced to the level of the cementoenamel junction followed by a double seal of mineral trioxide aggregate and composite resin.