Cell response about remodeling of PDL in orthodontic treatment:
OR
What is responsible in the remodeling of the periodontal ligament in orthodontic treatment:
- A. fibroblast. ***
- B. osteoblast
- C. osteocyte.
- D. osteoclast.
Osteoclasts responsible for bone resorption are mainly derived from the macrophages.
Osteoblasts are produced by proliferations of the cells of the periodontal ligament.
The correct answer is B. osteoblast.
formation of new bone tissue:
Osteoblasts are responsible for the formation of new bone tissue. During orthodontic treatment, osteoblasts are activated in the areas of tension within the periodontal ligament (PDL), which is the soft tissue that surrounds the tooth roots. These osteoblasts produce new bone matrix, which is then mineralized to form new bone. This process of bone formation is essential for tooth movement, as it allows the alveolar bone (the bony socket in which the tooth sits) to remodel and adapt to the new position of the tooth.
production of collagen:
Fibroblasts are responsible for the production of collagen, the main structural component of the PDL. While fibroblasts are important for maintaining the PDL's structure and function, they are not directly involved in the remodeling of the PDL during orthodontic treatment.
Osteocytes:
Osteocytes are mature bone cells that are embedded within the bone matrix. They are responsible for maintaining the bone matrix and for communicating with other osteocytes and osteoblasts. While osteocytes are important for bone homeostasis, they are not directly involved in the remodeling of the PDL during orthodontic treatment.
resorption of bone tissue:
Osteoclasts are responsible for the resorption of bone tissue. During orthodontic treatment, osteoclasts are activated in the areas of compression within the PDL. These osteoclasts break down the bone matrix, which allows the alveolar bone to resorb and adapt to the new position of the tooth. While osteoclasts are important for tooth movement, they are not the primary cell type responsible for the remodeling of the PDL.
Therefore, the correct answer is B. osteoblast.
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