The effects of hydrochloric acid on all-ceramic restorative materials: an in-vitro study.

Objectives: The aim of this in-vitro study was to assess the long-term effects of hydrochloric acid on the surface roughness of three all-ceramic restorative materials CEREC VITABLOC Mark II CAD, IPS Empress CAD and IPS e.max CAD.

Materials And Methods: Six cylindrical specimens (10mm diameter, 3mm height) of each material type were prepared, using the CEREC CAD/CAM machine.

Amelogenesis imperfecta: a diagnostic and pathological review with case illustration.

Amelogenesis mperfecta is an inherited disorder of enamel development, which results n morphological defects of both the primary and secondary dentition, usually in the absence of systemic involvement. Mutational defects involving the genes that encode for enamel matrix proteins and proteinases are mplicated in this disorder. The phenotypic expression is variable, spanning a spectrum from barely discernible changes to severe aesthetic and functional enamel defects.