Clinical Outcomes after Treatment of Periodontal Intrabony Defects with Nanocrystalline Hydroxyapatite (Ostim) or Enamel Matrix Derivatives (Emdogain): A Randomized Controlled Clinical Trial

Figure 1

Study design. PPD: probing pocket depth; RAL: relative attachment level; RGR: relative gingival recession; PP: patient perception; EHI: early wound-healing index.