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

Table 3

Full-mouth plaque scores.

Variable	Baseline	3 months	6 months	9 months	12 months	P value* (Bs–3 m)	P value* (Bs–6 m)	P value* (Bs–9 m)	P value* (Bs–12 m)
Plaque (%, mean ± SD)
NHA group	13.2±10.6	19.5±11.0	28.4±22.0	24.9±17.2	21.3±14.5	0.040	0.014	0.015	0.035
EMD group	9.6±8.6	20.0±14.0	24.7±17.8	20.5±16.1	19.1±15.1	0.001	0.003	0.007	0.005
P value^†	0.257	0.909	0.577	0.423	0.648

∗Paired t-test; ^†unpaired t-test.