'Microcephalic osteodysplastic primordial dwarfism type II (MOPDII) is a form of microcephalic primordial dwarfism (MPD; see this term) characterized by severe pre- and postnatal growth retardation, with marked microcephaly in proportion to body size, skeletal dysplasia, abnormal dentition, insulin resistance, and increased risk for cerebrovascular disease.'

Decreased size of the teeth, which can be defined as a mesiodistal tooth diameter (width) more than 2 SD below mean. Alternatively, an apparently decreased maximum width of tooth.