Influence of root dentin treatment on the push-out bond strength of fibre-reinforced posts.

This study evaluates the influence of root dentin treatment with NaOCl alone and combined with EDTA, with and without ultrasound activation, on the push-out bond strength (BS) of fiber-reinforced posts in weakened roots, cemented with RelyX or Panavia. The root canals of 42 maxillary canines were instrumented with Reciproc and 2.5% NaOCl.

Hardness and microshear bond strength to enamel and dentin of permanent teeth with hypocalcified amelogenesis imperfecta.

Background: Adhesive procedures are often required to restore teeth affected by hypocalcified amelogenesis imperfecta (HAI).

Aim: To evaluate the hardness of enamel/dentin of teeth affected by HAI and the bond strength to these substrates, as well the influence of 5% NaOCl on bond strength.

Design: Permanent molars presenting HAI and sound third molars were used.