mRNA Expression of MMP-28 (Epilysin) in Gingival Tissues of Chronic and Aggressive Periodontitis Patients: A Reverse Transcriptase PCR Study

Table 1

Distribution of patients in three groups (healthy, chronic periodontitis, and aggressive periodontitis) by age groups.

Age groups	Healthy	%	Chronic periodontitis	%	Aggressive periodontitis	%	Total
15–24 yrs	9	45.0	0	0.0	6	30.0	18
25–34 yrs	11	55.0	6	30.0	9	45.0	23
35+ yrs	0	0.0	14	70.0	5	25.0	19
Total	20	100.0	20	100.0	20	100.0	60
Mean age	24.60		37.85		29.25		30.57
SD age	5.32		10.90		6.78		9.63