Which tool is used to measure the PHP index?

Which tool is used to measure the PHP index?

• A. Gingival Probe
• B. Intraoral Camera
• C. Dental Mirror
• D. Disclosing Solution

Answer: (D)

To assess how well a patient controls plaque, the PHP index relies on a disclosing agent to visualize plaque on tooth surfaces. After applying and rinsing off the disclosing solution, plaque becomes visible and can be scored across predetermined surfaces, giving a measure of the patient’s oral hygiene. The disclosing solution is essential because it reveals plaque that would otherwise be difficult to see, allowing a reliable assessment of hygiene performance. A gingival probe measures periodontal depths, not plaque accumulation. An intraoral camera records images for documentation but does not reveal plaque in a way that supports the PHP scoring. A dental mirror helps with vision and retraction but doesn’t show plaque itself.

To assess how well a patient controls plaque, the PHP index relies on a disclosing agent to visualize plaque on tooth surfaces. After applying and rinsing off the disclosing solution, plaque becomes visible and can be scored across predetermined surfaces, giving a measure of the patient’s oral hygiene. The disclosing solution is essential because it reveals plaque that would otherwise be difficult to see, allowing a reliable assessment of hygiene performance.

A gingival probe measures periodontal depths, not plaque accumulation. An intraoral camera records images for documentation but does not reveal plaque in a way that supports the PHP scoring. A dental mirror helps with vision and retraction but doesn’t show plaque itself.