A randomized controlled study on color stability of tetracycline teeth restored with ceramic veneer

doi:10.7518/hxkq.2021.03.014

Abstract

Abstract: Objective

This study aimed to evaluate the color stability of tetracycline teeth restored with ceramic veneers of different thicknesses combined with different resin cement systems after aging.

Methods

Twenty patients with tetracycline teeth, including two maxillary central incisors, were selected clinically. The patients were randomly divided into four groups and restored with 0.5 and 0.75 mm ceramic veneers by using a veneer adhesive system, either with light-cured or dual-cured reaction. The color difference (ΔE) values after cementation and 1, 6, 12, and 24 months of use were obtained by quantification of L*, a*, and b* values with a colorimeter. The results were analyzed statistically with two-way ANOVA and Student's t test.

Results

The ΔE values of ceramic veneers detected after aging were less than 2.25. The 0.5 mm groups exhibited greater color change than the 0.75 mm-thick veneers (P<0.05). No significant difference was found on the color change of dual- or light-cured resin cements.

Conclusion

Resin cements and veneer thickness influence the color of ceramic veneers after aging. Cementation of veneers with either dual- or light-cured resin cements does not affect the long-term color stability of tetracycline teeth differently.

Key words: ceramic veneer, tetracycline teeth, color

CLC Number:

R783.2

Shi Shuya, Gu Xiaoyu. A randomized controlled study on color stability of tetracycline teeth restored with ceramic veneer[J]. West China Journal of Stomatology, 2021, 39(3): 336-340.

Figures/Tables 3

Tab 1

Tab 2

Tab 3

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组别	L*	a*	b*
A	62.79±2.39	3.88±0.84	16.02±3.49
B	64.25±1.93	3.82±0.72	14.55±3.57
C	65.79±4.44	3.76±0.87	15.43±2.88
D	64.05±3.82	3.83±0.86	14.90±2.33

组别	时间点/月	L*	a*	b*	ΔL*	Δa*	Δb*
A	0	72.24±1.42	1.65±0.34	11.79±1.62
	1	72.07±1.38	1.72±0.27	11.88±1.47	-0.17±0.08	0.07±0.08	0.10±0.23
	6	71.71±1.29	1.84±0.32	12.06±1.42	-0.53±0.16	0.19±0.05	0.28±0.27
	12	71.35±1.28	1.95±0.30	12.14±1.31	-0.89±0.17	0.30±0.07	0.35±0.35
	24	71.09±1.21	1.96±0.39	12.29±1.29	-1.15±0.26	0.31±0.10	0.51±0.38
B	0	72.15±1.55	1.97±0.38	11.44±1.68
	1	71.90±1.48	2.05±0.34	11.55±1.59	-0.25±0.10	0.08±0.09	0.11±0.18
	6	71.45±1.23	2.12±0.28	11.77±1.54	-0.70±0.51	0.15±0.13	0.33±0.21
	12	71.10±1.25	2.20±0.28	11.93±1.48	-1.06±0.52	0.24±0.10	0.50±0.25
	24	70.77±1.24	2.30±0.28	12.15±1.47	-1.39±0.65	0.33±0.12	0.71±0.27
C	0	72.68±1.06	1.23±0.23	14.89±1.03
	1	72.56±1.03	1.30±0.21	14.99±1.0	-0.12±0.06	0.07±0.03	0.09±0.04
	6	72.37±0.97	1.42±0.23	15.14±0.94	-0.31±0.13	0.20±0.03	0.25±0.10
	12	72.06±0.90	1.49±0.22	15.35±0.87	-0.62±0.20	0.26±0.04	0.46±0.18
	24	71.84±0.92	1.56±0.22	15.44±0.86	-0.84±0.19	0.33±0.06	0.54±0.19
D	0	72.43±1.17	1.32±0.31	13.55±1.52
	1	72.30±1.16	1.41±0.27	13.63±1.49	-0.13±0.04	0.09±0.06	0.09±0.03
	6	72.08±1.12	1.46±0.27	13.73±1.46	-0.35±0.09	0.14±0.08	0.18±0.09
	12	71.82±1.04	1.54±0.26	13.86±1.42	-0.61±0.18	0.22±0.10	0.37±0.11
	24	71.68±1.03	1.59±0.25	14.0±1.45	-0.75±0.20	0.27±0.10	0.45±0.10

组别	1月		6月		12月		24月
组别	ΔE	P值	ΔE	P值	ΔE	P值	ΔE	P值
A	0.31±0.10	0.36	0.69±0.12	0.36	1.06±0.17	0.30	1.36±0.22	0.15
B	0.35±0.09		0.85±0.48		1.24±0.47		1.66±0.54
C	0.18±0.05	0.79	0.46±0.10	0.54	0.84±0.16	0.33	1.08±0.16	0.07
D	0.19±0.06		0.43±0.11		0.76±0.18		0.92±0.18

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