Table 1.

A summary of the characteristics of the participants and their level of gingival inflammation

	DPSI 0	DPSI 1	DPSI 2	DPSI 3-
Anterior teeth	0 (0 %)	2 (4 %)	44 (92 %)	2 (4 %)
Total mouth	0 (0 %)	2 (4 %)	21 (44 %)	25 (52 %)

DPSI (Dutch Periodontal Screening Index) score 0 stands for a mouth with no pockets deeper than 3 mm, no bleeding on probing and no calculus and/or overhanging restorations present. DPSI score 1 has the same characteristics as score 0, but with bleeding on probing. DPSI score 2 has the same characteristics as score 1, but with calculus and/or overhanging restorations present. DPSI score 3- has pockets of a maximum of 5 mm, bleeding on probing, supra- and subgingival calculus and/or overhanging restorations, but without recessions