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Plaque Index: Patient Hygiene Performance (PHP), Plaque Control Record (PCR), Plaque Free Score (PFS), Plaque Index (PLI), Oral Hygiene Index (OHI)
Source: Nathe, C. N., & Nathe, C. N. (2011). Dental public health and research: Contemporary practice for the dental hygienist. Upper Saddle River, N.J: Pearson.