PDL Turnover Rate — NDEB AFK MCQ
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Correct answer: C — Periodontal ligament
The periodontal ligament (PDL) has one of the fastest connective tissue turnover rates in the body — collagen turnover is approximately 4 times faster than skin and twice as fast as gingival connective tissue. This rapid turnover is essential for adaptation to functional demands (tooth eruption, orthodontic movement, occlusal forces) and for wound healing after periodontal treatment. Fibroblasts in the PDL simultaneously synthesise and degrade collagen fibres.
Reference: Nanci – Ten Cate's Oral Histology, 9th ed., 2017