On November 26th, Mina Aker Sagen will defend her thesis entitled “Resin-based cements and substrate surfaces – an evaluation of critical factors for bond strength”

The aim of this study was to evaluate the dentine bond strength of a novel fast‐setting calcium silicate cement (Protooth) versus a calcium hydroxide‐based cement (Dycal), a calcium silicate cement (ProRoot MTA), and a glass ionomer cement (Ketac‐Molar). Mid‐root dentine slices of 1 mm thickness were obtained from human maxillary incisors. After enlarging the lumen […]

Amalgam restorations of adequate standard and condition can very well be repaired with composite, but there should be provided for extra retention into the amalgam filling as the bond strength alone is not adequate. Glass-Ionomer may also be used for repair at amalgam restoration margins in not stress bearing areas, but as they do not adhere to amalgam, they need enamel and dentine for retention and possible undercuts towards amalgam interface.

The effects of dentin pre-treatment with ethylene diamine tetraacetic acid (EDTA) or iodine-potassium iodide (IKI) on the adhesion of a conventional root filling material (gutta-percha and epoxy resin based sealer) and an acrylic-resin-based system with adhesive technology were studied.