Okay, let's tackle this question. First, I need to understand what the Papillary-Marginal-Attachment Index (PMAI) is. I remember it's a clinical tool used to assess the severity of gingivitis in different parts of the gingiva. The question describes a patient with specific signs: papillary gingiva with excessive increase in size and spontaneous bleeding, marginal gingiva with a swollen collar and bleeding with infiltration into attached gingiva, and attached gingiva showing engorgement, loss of stippling, and color changes. The question asks for the score for one tooth.

So, the PMAI assigns scores based on the severity of changes in each of the three areas: papillary, marginal, and attached. Each area is scored separately, and then summed up. The total score for a tooth would be the sum of each component's score.

Let me recall the scoring criteria. For the papillary component, a score of 3 would indicate marked increase in size with spontaneous bleeding. The marginal gingiva score of 3 would be swollen collar with spontaneous bleeding and infiltration into attached gingiva. The attached gingiva score of 2 would be slight engorgement, loss of stippling, and color changes. So adding them up: 3 (papillary) + 3 (marginal) + 2 (attached) = 8. Therefore, the total score for the tooth would be 8.

Now, the options aren't provided, but the correct answer is likely to be 8. The distractors might include other scores like 6, 7, or 9. Let's check why those are wrong. If someone miscalculates each component, they might add incorrectly. For instance, if they score the attached gingiva as 3 instead of 2, the total would be 9. Or if they miss one of the components, the total would be lower, like 6 or 7. But according to the description given, the scores for each part are 3, 3, and 2, totaling 8. The clinical pearl here is to remember that PMAI scores each area separately and then sums them, with higher scores indicating more severe inflammation. So, the key takeaway is to accurately assess each component's score before adding.

**Core Concept**
The Papillary-Marginal-Attachment Index (PMAI) quantifies gingival inflammation severity by evaluating **papillary**, **marginal**, and **attached gingiva** separately. Each component is scored 0–3, with scores summed for a total per tooth. This index is critical for staging periodontal disease and monitoring treatment response.

**Why the Correct Answer is Right**
The described findings align with **Papillary Score 3** (marked hypertrophy + spontaneous bleeding), **Marginal Score 3** (swollen collar + bleeding + infiltration into attached gingiva), and **Attached Score 2** (engorgement + loss of stippling + color change). Summing these: **3 + 3 + 2 = 8**. This score indicates severe marginal and papillary inflammation with moderate attachment changes.

**Why Each Wrong Option is Incorrect**
**Option A:** A score of 6 would imply all components scored ≤2 (e.g., 2+2+2), but the case describes severe papillary/marginal

✓ Correct Answer: C. 7