Table 1.

Varnishes used in this study.

Varnish	Content	Manufacturer	Lot number	Source
MI	30–50% polyvinyl acetate, 10–30% hydrogenated rosin, 20–30% ethanol, 1–8% sodium fluoride, 1–5% CPP-ACP, 1–5% silicon dioxide	GC, Tokyo, Japan	141009A	MSDS
Clinpro White	30–75% pentaerythritol glycerol ester of colophony resin, 10–15% n-hexane, 1–15% ethyl alcohol, 1–5% sodium fluoride, 1–5% flavour enhancer, 1–5% thickener, 1–5% food grade flavour, <5% modified tricalcium phosphate	3M Espe, MN, USA	N545905	MSDS
Duraphat	10–<40% colophonium, 10–<30% ethanol, <5% sodium fluoride, <1% saccharin, <1% isoamyl acetate, other ingredients	Colgate-Palmolive, NSW, Australia	BB2LX	MSDS