Dental The distance between the bottom of calculus and alveolar crest in human periodontal pocket is constant having an approximate length of A 0.97 mm B 1.97 mm C 2.97 mm D 3.97 mm 💡 Explanation The distance between the bottom of calculus and alveolar crest in human periodontal pocket is constant having an approximate length of ✓ Correct Answer: B. 1.97 mm