Periodontics · single question
What type of collagen is predominantly found in the periodontal ligament (PDL)?
Show answer and explanation
Correct answer: A. Type I
A) Type I collagen — CORRECT.
The periodontal ligament is composed predominantly (~70-80%) of Type I collagen fibers, which provide tensile strength. This is the same collagen found in bone, tendon, and skin.
B) Type II: Found in cartilage — not in the PDL.
C) Type III: Found in early wound healing and reticular fibers; present in small amounts in the PDL but not predominant.
D) Type IV: Found in basement membranes — not a structural component of the PDL.
The periodontal ligament is composed predominantly (~70-80%) of Type I collagen fibers, which provide tensile strength. This is the same collagen found in bone, tendon, and skin.
B) Type II: Found in cartilage — not in the PDL.
C) Type III: Found in early wound healing and reticular fibers; present in small amounts in the PDL but not predominant.
D) Type IV: Found in basement membranes — not a structural component of the PDL.