Calcium orthophosphates (CaPO₄): occurrence and properties

Area of Science:

• Biomaterials Science
• Inorganic Chemistry
• Mineralogy

Background:

• Calcium orthophosphates (CaPO4) constitute the inorganic matrix of mammalian calcified tissues, including bones, teeth, and antlers.
• CaPO4 plays a critical role in both normal physiological processes (biomineralization) and pathological conditions (e.g., atherosclerosis, dental caries, osteoporosis).
• These compounds are also significant natural resources for phosphorus, essential for fertilizers and chemical industries.

Purpose of the Study:

• To provide a comprehensive overview of the current knowledge on calcium orthophosphates (CaPO4).
• To highlight the multifaceted importance of CaPO4 in biological systems and industrial applications.
• To underscore the significance of understanding CaPO4 crystallization and dissolution processes.

Main Methods:

• Literature review and synthesis of existing research on calcium orthophosphates.
• Analysis of the role of CaPO4 in normal and pathological calcification processes.
• Examination of the industrial relevance and applications of natural CaPO4.

Main Results:

• CaPO4 are fundamental to the structure and integrity of mammalian skeletal and dental tissues.
• Disruptions in CaPO4 homeostasis are linked to significant diseases such as osteoporosis and atherosclerosis.
• Natural CaPO4 deposits are a primary source for industrial phosphorus production.

Conclusions:

• Calcium orthophosphates are indispensable biomaterials with profound implications for human health and disease.
• Understanding the in vivo processes of CaPO4 crystallization and dissolution is key to addressing calcification-related disorders.
• The industrial utility of CaPO4 as a phosphorus source further emphasizes their global importance.