Table 1.

Demographic characteristics and full-mouth clinical parameters of the patients in experimental groups

Variables	Experimental groups			P-value*
	Periodontally healthy	Generalised aggressive periodontitis	Generalised chronic periodontitis
Number of patients	53	74	308
Age (years)	35.1 ± 9.5A	27.1 ± 3.1B	45.1 ± 5.9C	<0.001
Gender (male:female)	23:30	32:42	122:186	NS
Probing depth (mm)	1.9 ± 0.5A	4.2 ± 1.1B	4.1 ± 1.3B	<0.001
Clinical attachment level (mm)	0.7 ± 0.4A	3.8 ± 1.2B	3.8 ± 1.1B	<0.001
% Sites with:
Plaque	28.1 ± 7.7A	49.5 ± 14.2B	84.6 ± 12.2C	<0.001
Gingival bleeding	2.0 ± 1.0A	33.2 ± 12.9B	34.1 ± 22.1B	<0.001
Bleeding on probing	2.1 ± 0.8A	46.1 ± 14.2B	45.2 ± 27.2B	<0.001
Suppuration	0 ± 0A	4.4 ± 3.7B	3.29 ± 4.1B	<0.001

Values are given as number of patients, ratio (male : female) or mean ± standard deviation.

The significance of differences among groups was assessed using the Kruskall–Wallis test (*). The significance of differences between pairs of comparisons was determined using Dunn’s multiple comparison test and the significances are represented by different capital letters.NS, not significant.