Efficacy of whitening oral rinses and dentifrices on color stability of bleached teeth

Figures & data

Table 1. The compositions of whitening mouth rinses, toothpastes and artificial saliva.

Product name (code)	Manufacturer	Compositon
Scope White mouthwash (SW)	Procter & Gamble, Cincinati, OH	Water, glycerin, alcohol (5%), 1.5% HP, hexametaphosphate, poloxamer 407, sodiumcitrate, flavor, sodium saccharin, citric acid
Crest 3D White toothpaste (CWT)	Procter & Gamble, Cincinati, OH	Sodium fluoride, water, sorbitol, hydrated silica, disodium pyrophospate, sodium lauryl sulfate, cellulose gum, sodium hydroxide, sodium saccharin, carbomer, polyethylene, mica, titanium dioxide, blue 1 lake
Crest 3D White multi-care whitening rinse (CWR)	Procter & Gamble, Cincinati, OH	Water, 1.5% HP, propylene glycol, sodium hexametaphosphate, poloxamer 407, sodium citrate, flavor, sodium saccharin, citric acid
Listerine Whitening mouthrinse (LWR)	Johnson & Johnson Healthcare Products, Skilman NJ	Water, alcohol (8%), HP, tetrapotassium pyrophosphate, pentasodium triphosphate, citric acid, poloxamer 407, flavors, sodium saccharin, sucralose
Listerine Whitening toothpaste (LWT)	Johnson & Johnson Healthcare Products, Skilman NJ	Sodium monofluorophosphate, sorbitol solution, water, hydrated silica, glycerin, PEG-32, sodium lauryl sulfate, cellulose gum, sodium saccharin, eucalyptol, methyl salicylate, thymol, phosphoric acid, menthol, zinc citraete, sodium phosphate, xanthan gum, benzoic acid, flavors, blue 1
Artificial saliva	RTEU Laboratories of Biochemistry	Calcium chloride 0.166 g, sodium benzoate 1 g, cellulose 10 g, magnesium chloride 0.05 g, potassium chloride 0.62 g, sodium chloride 0.025 g, sorbitol 42 g, distilled water 944.52 mL, potassium phosphate 1.1 g

Table 2. Means ± standard deviations of parameters after staining of bleached teeth.

Groups	ΔE	ΔL	Δa	Δb
DW	5.10 ± 3.31^a	−3.64 ± 2.54^a	0.84 ± 0.71^ab	2.98 ± 2.74^b
SW	3.99 ± 1.75^a	−3.23 ± 1.39^a	0.42 ± 0.50^ab	2.02 ± 1.50^ab
LWT	5.31 ± 2.10^a	−3.94 ± 2.85^a	0.91 ± 1.17^b	2.19 ± 1.47^ab
CWT	4.77 ± 1.47^a	−4.48 ± 1.57^a	−0.36 ± 0.66^a	0.57 ± 1.31^ab
CWR	5.24 ± 2.06^a	−4.43 ± 2.36^a	−0.35 ± 0.36^ab	1.74 ± 1.93^ab
LWR	4.01 ± 0.84^a	−2.89 ± 1.33^a	0.17 ± 0.59^ab	1.71 ± 1.97^ab
CWR +   CWT	5.06 ± 1.21^a	−4.76 ± 1.06^a	0.29 ± 0.98^ab	0.24 ± 1.52^a
LWR +   LWT	4.64 ± 2.02^a	−3.60 ± 2.42^a	0.13 ± 1.46^ab	2.00 ± 1.10^ab

Different superscript letters determine significant differences among groups.

Table 3. Means ± standard deviations of ΔE, ΔL, Δa and Δb values at the time point evaluated after whitening.

	ΔE		ΔL		Δa		Δb
Groups	6 weeks	12 weeks	6 weeks	12 weeks	6 weeks	12 weeks	6 weeks	12 weeks
DW	3.00 ± 2.20^a	2.48 ± 1.43^a	2.17 ± 2.29^a+	−0.39 ± 2.43^a+	−0.40 ± 0.52^ab+	0.27 ± 0.50^bcd+	−0.64 ± 1.85^a	0.22 ± 1.54^ab
SW	2.46 ± 1.69^a	3.26 ± 2.15^a	1.41 ± 2.31^a	1.17 ± 2.52^ab	−0.02 ± 0.40^bc	−0.08 ± 0.44^bc	−0.18 ± 1.34^a	−0.23 ± 2.88^ab
LWT	3.56 ± 1.88^ab	3.45 ± 2.92^a	1.75 ± 2.85^a	2.00 ± 2.05^b	−0.63 ± 0.80^a	−0.51 ± 0.66^a	−0.42 ± 2.19^a+	0.65 ± 4.12^b+
CWT	3.07 ± 1.64^a	3.08 ± 1.61^a	2.45 ± 2.15^a	2.55 ± 1.44^b	0.31 ± 0.59^c	0.39 ± 0.63^cd	0.16 ± 1.14^a	−0.18 ± 1.81^ab
CWR	5.17 ± 2.39^b	5.91 ± 2.81^b	4.89 ± 2.27^b	5.42 ± 2.88^c	0.39 ± 0.32^c	0.50 ± 0.38^cd	−0.91 ± 1.60^a	−1.66 ± 1.51^a
LWR	2.81 ± 1.06^a	3.14 ± 1.07^a	2.19 ± 1.36^a	2.19 ± 1.51^b	0.29 ± 0.35^c	0.61 ± 0.35^d	−0.65 ± 1.40^a	−0.99 ± 1.70^a
CWR + CWT	3.08 ± 1.53^a	3.61 ± 1.32^a	2.50 ± 1.39^a	2.90 ± 1.29^b	0.10 ± 0.32^bc	−0.21 ± 0.76^ab	−1.16 ± 1.55^a	−1.56 ± 1.38^a
LWR + LWT	2.89 ± 1.95^a	2.85 ± 1.83^a	2.35 ± 2.23^a	2.29 ± 2.63^b	−0.29 ± 0.89^ab	0.18 ± 0.79^ab	−0.63 ± 0.77^a	0.58 ± 1.41^ab

For a given time, different superscript lower letters indicate significant difference among groups.

⁺Statistical significant difference between 6 and 12weeks for each color parameter (p < 0.05).