Microbiological Effect of Essential Oils in Combination with Subgingival Ultrasonic Instrumentation and Mouth Rinsing in Chronic Periodontitis Patients

Table 2

Clinical characteristics of sampling sites.

Variable	Shallow pockets (PPD = 4-5 mm)			Deep pockets (PPD ≥ 6 mm)
	Control group	Saline group	EO group	Control group	Saline group	EO group
Number of sites (𝑛)	8	12	12	22	18	18
Type of the teeth
Anterior/premolar/molar	3/4/1	5/4/3	6/4/2	12/6/4	10/5/3	8/8/2
Furcation involvement (𝑛)	0	0	0	2	1	1
PPD (mm)	5.0±0.0	4.9±0.3	5.0±0.4	7.0±1.2	6.7±1.7	7.2±1.6
CAL (mm)	5.4±0.7	5.5±0.7	5.3±0.7	7.8±1.5	7.6±1.8	7.9±1.7
BOP (% positive)	75.0	83.3	75.0	100	100	100

EO: essential oil-containing antiseptic; furcation involvement (𝑛), number of teeth with furcation involvement; PPD: probing pocket depth; CAL: clinical attachment level; BOP: bleeding on probing. Values are expressed as mean ± SD. No statistically significant difference was observed for any variables between the 3 groups (Kruskal-Wallis test). Statistically significant difference was observed for all variables between shallow pockets and deep pockets (P < 0.05, Mann-Whitney 𝑈 test).