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Physiological bases of bone regeneration II The remodeling process Fernandez-Tresguerres-Hernandez-Gil I; Alobera-Gracia MA; del-Canto-Pingarron M; Blanco-Jerez LMed Oral Patol Oral Cir Bucal 2006[Mar]; 11 (2): E151-7Bone remodeling is the restructuring process of existing bone, which is in constant resorption and formation. Under normal conditions, this balanced process allows the renewal of 5-10% of bone volume per year. At the microscopic level, bone remodeling is produced in basic multicellular units, where osteoclasts resorb a certain quantity of bone and osteoblasts form the osteoid matrix and mineralize it to fill the previously created cavity. These units contain osteoclasts, macrophages, preosteoblasts and osteoblasts, and are controlled by a series of factors, both general and local, allowing normal bone function and maintaining the bone mass. When this process becomes unbalanced then bone pathology appears, either in excess (osteopetrosis) or deficit (osteoporosis). The purpose of this study is to undertake a revision of current knowledge on the physiological and biological mechanisms of the bone remodeling process; highlighting the role played by the regulating factors, in particular that of the growth factors.|Biological Factors/physiology[MESH]|Bone Regeneration/*physiology[MESH]|Bone Remodeling/physiology[MESH]|Humans[MESH] |
