cementoblastos

Cementoblasts are specialized cells of mesenchymal origin responsible for the formation of cementum, a hard, mineralized connective tissue covering the root of a tooth. These cells are typically found along the surface of the root dentin, within the periodontal ligament. Their primary function is to synthesize and secrete the organic matrix of cementum, known as cementoid. This matrix is primarily composed of collagen fibers and ground substance.

Following the deposition of the organic matrix, cementoblasts initiate and regulate the mineralization process, leading to the hardening of cementoid into mature cementum. Cementum plays a crucial role in anchoring the tooth to the alveolar bone via the fibers of the periodontal ligament. It also contributes to tooth root repair and adaptation.

Cementoblasts originate from progenitor cells within the dental follicle, the connective tissue surrounding the developing tooth germ. Under the influence of various growth factors and signaling molecules, these progenitor cells differentiate into active cementoblasts. Once embedded within the cementum they have formed, some cementoblasts may transform into cementocytes, which reside in lacunae and maintain the surrounding cementum. The activity of cementoblasts is influenced by mechanical forces, hormonal signals, and inflammatory processes within the periodontium.