What is functional matrix theory of growth?
It proposes that “the origin, development and maintenance of all skeletal units are secondary, compensatory and mechanically obligatory responses to temporally and operationally prior demands of related functional matrices.”
What is functional matrix in orthodontics?
The expression “functional matrix” was introduced to the orthodontic community and described by Moss in 1962 2 as a tissue mass enclosed by bones to form a functional unit. This concept was operationalized in an analysis of the developing maxilla in 1967 5.
Who forwarded functional matrix hypothesis?
Melvin L. Moss
Melvin L. Moss developed the functional matrix hypothesis. 5.
What is Moss functional matrix theory?
Moss wrote that “bones should not be considered as the named entities of classic osteology (e.g., a mandible or a maxilla), but rather as a series of segments, related to specific functions and responding, during their growth, to specific functional demands” [1] which became known as the functional matrix theory.
What is a functional matrix structure?
Matrix structure is a type of organizational structure where employees are grouped concurrently by two different operational dimensions. Functional structure divides the organization based on specialized functional areas such as production, marketing, and sales for the purpose of management.
What is a capsular matrix?
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.
What is the capsular matrix?
Who proposed the nasal septum theory of craniofacial growth?
Vander Klaaw
Nasal septum may be important for anteroposterior growth of face because of endochondral growth process occurring at its posterior border. It is not considered to be an active contributor for vertical development of face. The concept that “form follows function” was first proposed by Vander Klaaw (1948–52).
What is the difference between functional and matrix?
What are the types of matrix structure?
There are three types of matrix organizational structures:
- Weak matrix structure. A weak matrix structure is most similar to a traditional hierarchical structured workplace.
- Balanced matrix structure.
- Strong matrix structure.
Why is the territorial matrix Basophilic?
The territorial matrix is basophilic (attracts basic compounds and dyes due to its anionic/acidic nature), because there is a higher concentration of proteoglycans, so it will color darker when it’s colored and viewed under a microscope.
Are fibers visible in hyaline cartilage?
Hyaline cartilage is easily distinguished from elastic and fibrocartilage because of the homogeneous (no fibers are visible) extracellular matrix (ECM) .
What does Meckel’s cartilage gives rise to?
Meckel’s cartilage is comprised of three distinct regions. The anterior and posterior regions undergo endochondral ossification and contribute to mandibular development, and to formation of the malleus and incus (ear bones) respectively. The middle region degenerates and gives rise to the sphenomandibular ligament.
Where is the principal site of vertical growth of the mandible?
– If the cranium is the reference area, the chin moves downward and forward. – On the other hand, if data from vital staining experiments are examined, it becomes apparent that the principal sites of growth of the mandible are the posterior surface of the ramus and the condylar and coronoid processes.
What is a functional matrix?
Matrix Organization The authority of a functional manager moves vertically downwards, and the authority of the project manager moves sideways. Since these authorities flow downward and sideways, this structure is called the matrix organization structure.
What is functional matrix structure?
What is interstitial matrix?
Definition: A type of extracellular matrix found in interstitial connective tissue, characterized by the presence of fibronectins, proteoglycans, and types I, III, V, VI, VII and XII collagens. Parent Terms: is-a collagen-containing extracellular matrix.
How is the matrix of elastic cartilage and fibrocartilage different from the matrix of hyaline cartilage?
Hyaline cartilage contains fibers made primarily of type II collagen only. Fibrocartilage contains type II collagen but also contains abundant type I collagen. Elastic cartilage contains type II collagen and elastic fibers.
What is the matrix of cartilage?
The matrix of cartilage is made up of glycosaminoglycans, proteoglycans, collagen fibers and, sometimes, elastin.
What are 3 types of cartilage?
There are three types of cartilage: hyaline, fibrous, and elastic cartilage. Hyaline cartilage is the most widespread type and resembles glass. In the embryo, bone begins as hyaline cartilage and later ossifies. Fibrous cartilage has many collagen fibers and is found in the intervertebral discs and pubic symphysis.