Dentin organic component is predominantly which?

Dentin organic component is predominantly which?

• A. 85% collagen
• B. Noncollagenous proteins
• C. Proteins associated with mineralized tissues
• D. Water

Answer: (A)

The organic matrix of dentin is dominated by collagen, specifically type I collagen, which forms the fibrous scaffold that the mineral crystals deposit onto. This collagen network makes up the vast majority of the organic component—about 85%—providing a flexible framework that gives dentin its toughness and acts as a template for mineralization. The remaining organic material consists of noncollagenous proteins (such as dentin phosphoproteins and proteoglycans) in smaller amounts, which play roles in mineralization and matrix organization. Water is a separate component and is not part of the organic matrix. So, the key idea is that collagen is the predominant organic component of dentin.

The organic matrix of dentin is dominated by collagen, specifically type I collagen, which forms the fibrous scaffold that the mineral crystals deposit onto. This collagen network makes up the vast majority of the organic component—about 85%—providing a flexible framework that gives dentin its toughness and acts as a template for mineralization. The remaining organic material consists of noncollagenous proteins (such as dentin phosphoproteins and proteoglycans) in smaller amounts, which play roles in mineralization and matrix organization. Water is a separate component and is not part of the organic matrix. So, the key idea is that collagen is the predominant organic component of dentin.