Dental In gingival bleeding index given by Ainamo and Bay, positive score is taken at what time after appearance of bleeding on probing? A 10 Sec. B 20 Sec. C 30 Sec. D 40 Sec 💡 Explanation In gingival bleeding index given by Ainamo and Bay, positive score is taken at what time after appearance of bleeding on probing? ✓ Correct Answer: A. 10 Sec.