Hard tissue is a type of tissue that is mineralized and has a firm intercellular matrix. The hard tissues of humans are bone, tooth enamel, dentin, and cementum. These tissues are responsible for providing strength and structure to the body.
- Bone is the primary hard tissue in the body, providing support, protection, and movement. It is made up of a matrix of collagen fibers and calcium phosphate crystals.
- Tooth enamel is the outermost layer of the tooth and is the hardest substance in the human body. It is composed primarily of hydroxyapatite, a mineral that is very resistant to wear and tear.
- Dentin is the layer beneath the enamel and is softer than enamel. It is made up of a matrix of collagen fibers and a mineral called dentin.
- Cementum is a thin layer of tissue that covers the root of the tooth and helps to attach the tooth to the jawbone. It is made up of a matrix of collagen fibers and a mineral called cementum.
These hard tissues play essential roles in maintaining the body's structure and function.
