Influence of five home whitening gels and a remineralizing gel on the enamel and dentin ultrastructure and hardness.

Purpose: To investigate the influence of calcium phosphate enhanced home whitening agents on human enamel and dentin surface microhardness and ultramorphology.

Methods: Five intact molars crowns were used for ultrastructural analysis and five for microhardness test. Each resulting coronal structure was cut in slices.