1 Do not attempt to dump dry ice in a sink or toilet. 2  The extreme cold will harm sink and toilet parts and pipes. 3  Do not dispose of dry ice in garbage receptacles or garbage chutes. 4  Do not leave dry ice in an unventilated room to evaporate. It will release a build-up of carbon dioxide into the air that can cause rapid suffocation. 2  Do not place dry ice on a tile or laminated countertop. 3  Instead, use a solid surface-a wood cutting board or piece of plywood is best.
amelogenesis imperfecta hypomaturation type 2A1. amelogenesis imperfecta hypomaturation type 2A1. An autosomal recessive defect of enamel formation (OMIM:204700), which affects the primary and secondary dentition. The teeth have a shiny, agar-like appearance, and the enamel is softer than normal. Brown pigment is present in middle layers of enamel. Molecular pathology.
A dilaceration is a bend in the root which may have been caused by trauma to the tooth during formation. Supernumerary roots is the presence of a greater number of roots on a tooth than expected. Abnormality in structure. Amelogenesis imperfecta is a condition in which enamel does not form properly or at all.