Placement of membranes during GTR favors repopulation by which type of cells?

The placement of membranes during Guided Tissue Regeneration (GTR) is specifically designed to favor the repopulation of the periodontal ligament cells. GTR is a surgical procedure aimed at regenerating the lost periodontal tissues—those critical structures that help support the teeth, including bone, cementum, and periodontal ligament.

During GTR, a barrier membrane is placed over the surgical site to prevent the fast-growing epithelial and connective tissues from occupying the space intended for regeneration. By impeding these quicker-repopulating cells, the procedure encourages the slower-replicating periodontal ligament cells to migrate into the area, thereby promoting a regenerative environment conducive to the proper healing and support of the teeth.

It is important to note that the other cell types mentioned have roles that aren't aligned with the goals of GTR. Epithelial cells tend to fill the space more rapidly, which would inhibit the regeneration process. Fibrous tissue, while important for wound healing, does not provide the same support as periodontal ligament cells in the context of maintaining tooth structure and function. Blood cells are involved in the initial inflammatory response and healing but do not participate in the regeneration of the periodontal ligament specifically. Therefore, the focused approach of utilizing membranes in GTR maximizes the potential for effective periodontal regeneration