Longitudinal Relationship between Plasma Reactive Oxygen Metabolites and Periodontal Condition in the Maintenance Phase of Periodontal Treatment

Table 1

Characteristics of the study population at baseline and 5-year follow-up.

Variables	Baseline (N = 45)	Follow-up (N = 45)	P value*
	N (%) or; Mean ± SD	N (%) or; Mean ± SD
Gender			—
Male	4 (8.9)
Female	41 (91.1)
Age (years)	58.8 ± 10.1	64.6 ± 10.2	—
Teeth present (n)	25.0 ± 4.4	24.1 ± 4.9	<0.001
Periodontal parameters
PPD (mm)	1.8 ± 0.3	1.9 ± 0.3	0.107
CAL (mm)	2.6 ± 1.1	2.8 ± 1.1	0.001
Teeth with CAL ≥7 mm (n)	1.2 ± 2.9	1.7 ± 3.6	<0.001
Sites with BOP (%)	4.5 ± 4.1	7.7 ± 7.6	0.012
PCR (%)	16.0 ± 13.4	21.3 ± 17.8	0.044
Plasma parameters
ROM (CARR U)	390.6 ± 61.0	389.4 ± 63.8	0.913
BAP (μmol/L)	2380.6 ± 244.8	1784.1 ± 501.5	<0.001

∗Paired 𝑡-test.
N: number; SD: standard deviation; PPD: probing pocket depth; CAL: clinical attachment level; BOP: bleeding on probing; PCR: plaque control record; ROM: reactive oxygen metabolites; CARR U: Carratelli units; and BAP: biologic antioxidant potential.