Identification of Gingival Crevicular Fluid Sampling, Analytical Methods, and Oral Biomarkers for the Diagnosis and Monitoring of Periodontal Diseases: A Systematic Review

Table 5

Summary of studies to compare MMP-8 concentrations (pg/ml).

References	Samples	Study design	Healthy	Gingivitis	CP	GAgP
			Mean ± SD
[67]	21H, 30CP	Intervention
[88]	10H, 10CP	Cross-sectional
[98]	20H, 20CP	Cross-sectional
[11]	43H, 56CP	Cross-sectional