Chandlers index is 225 . What is the interpretation-
**Core Concept**
Chandler's Index is a measure used to assess the severity of periodontal disease in a population. It is calculated by dividing the number of teeth with 3 or more mm of attachment loss by the total number of teeth examined, and then multiplying by 100 to express the percentage.
**Why the Correct Answer is Right**
Chandler's Index is a useful tool for epidemiological studies and clinical practice to quantify the extent of periodontal disease. A higher Chandler's Index indicates a greater proportion of teeth with significant attachment loss, suggesting more severe periodontal disease in the population. This index helps in assessing the burden of periodontal disease and planning interventions for prevention and treatment.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as Chandler's Index is not used to assess the severity of gingivitis, but rather periodontal disease.
**Option B:** This option is incorrect as there is no specific threshold for Chandler's Index that corresponds to a particular level of periodontal disease.
**Option C:** This option is incorrect as Chandler's Index is not used to predict the risk of periodontal disease progression.
**Clinical Pearl / High-Yield Fact**
Remember that Chandler's Index is a useful tool for assessing the severity of periodontal disease, but it should be used in conjunction with other diagnostic tools and clinical evaluation to make accurate diagnoses and treatment plans.
**Correct Answer: A. Not directly interpretable as it does not provide a direct answer to the severity of periodontal disease.**