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.
Osteogenesis imperfecta (OI) is a group of genetic disorders that mainly affect the bones. The term osteogenesis imperfecta means imperfect bone formation.People with this condition have bones that break easily, often from mild trauma or with no apparent cause.ost infants with more severe forms of osteogenesis imperfecta (such as type II and type III) have no history of the condition in their family. In these infants, the condition is caused by new (sporadic) mutations in the COL1A1 or COL1A2 gene.