CAPSULAR MATRIX

The morphogenetic role of two types of functional matrix-periosteal and capsular-in craniofacial growth is examined. The term growth is defined inclusively to include the changes in size and shape as well as changes in spatial position in time. The periosteal matrices are responsible for transformative growth, the changes in size and shape. The capsular matrices are responsible for translative growth, the changes in position. The role of oronasopharyngeal functioning spaces as competent, primary, morphogenetic agencies is detailed. The volumetric expansion of these capsular functional matrices is capable of accurate quantitative description. © 1969.