Functional Matrix Hypothesis: A Review of Literature

Abstract

Craniofacial growth is a complex process. Most of the treatment approaches have been based on the fundamental biological mechanisms involved in the growth and development of craniofacial bones and teeth. The exact mechanism which controls cranio facial growth has been a matter of debate and research for years together. The concept that “forms follow function” was first proposed by Vander Klaaw. Functional matrix hypothesis (F.M.H.) is actually an extension of this concept given by Moss. F.M.H. includes a functional matrix and skeletal units. Capsule is an envelope that contains functional cranial components sandwiched between the covering layers. It acts indirectly and passively and not by resorption or deposition. Functional matrix cranial analysis can be done in the maxilla and mandible. There are some limitations in F.M.H., so F.M.H. revisited is explained later which include 4 theories in it.Genomic and epi-genetic processes are examples of totally different types of causation- Genomic- formal cause and Epigenetic- efficient cause. Individually both are necessary causes, but neither are sufficient causes alone. They provide both the necessary and sufficient causes for the control of morphogenesis.