Validity assessment of quantitative light-induced fluorescence-digital (QLF-D) for the dental plaque scoring system: a cross-sectional study

Table 3 Correlation coefficients of among the QLF-D scores, PHP score, GI scores, BOP score, and PD scores (N = 33)

	QLF-D score	Δ R 30	Δ R 70	Δ R 120	PHP index	GI	BOP	PD
QLF-D score	1
Δ R 30	0.966^**	1
Δ R 70	0.816^**	0.810^**	1
Δ R 120	0.628^**	0.621^**	0.924^**	1
PHP index	0.730^**	0.760^**	0.598^**	0.466^**	1
GI	0.749^**	0.785^**	0.553^**	0.403^*	0.805^**	1
BOP	0.730^**	0.761^**	0.536^**	0.368^*	0.801^**	0.955^**	1
PD	0.683^**	0.708^**	0.613^**	0.496^**	0.598^**	0.782^**	0.738^**	1

QLF-D Quantitative Light-Induced Fluorescence-Digital, QLF-D ⊿R score redness differences of 30, 70, and 120% between the teeth and the red plaque observed on the QLF-D photograph, PHP index Patient hygiene performance index, GI Gingival index, BOP Bleeding on probing, PPD Probing pocket depth
^*P < 0.05
^**P < 0.01

ISSN: 1472-6831