Influence of thickness on the color and translucency of Vita veneer porcelain

doi:10.3877/cma.j.issn.1674-1366.2008-01-007

Abstract

Abstract:

Objective

To study the influence of porcelain thickness on the color and translucency.

Methods

Ten plate-shaped specimens of enamel and dental porcelain were made， five for each. The initial thickness was 1.2 mm and then the specimens were gradually grinded to 1.0， 0.8， 0.6， 0.4， 0.2 mm. The transmittance and color parameters were measured by a spectrocolorimeter at each thickness. Color difference and transmittance difference were calculated.

Results

L^* increased while a^* and b^* decreased with the decrease of the thickness. Transmittance increased obviously with the decrease of the thickness. Exponent relationship was found between the transmittance and the thickness.

Conclusion

Thickness of veneer porcelain has a significant effect on the color and translucency.

Key words: Color, Translucency, Thickness, Veneer porcelain

Fang XIONG, Zhimin ZHU, Yong-lie CHAO. Influence of thickness on the color and translucency of Vita veneer porcelain[J]. Chinese Journal of Stomatological Research(Electronic Edition), 2008, 02(01): 32-35.

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Figures/Tables 3

References 9

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	厚度（mm）	L^*	a^*	b^*	ΔE	T（%）	ΔT
体瓷	1.2	79.482	4.609	23.812	-	1.177	-
	1.0	85.294	3.674	23.814	5.892	1.555	0.378
	0.8	90.696	2.649	22.037	5.785	1.802	0.247
	0.6	90.356	1.809	18.952	3.245	3.242	1.440
	0.4	93.637	0.91	15.03	5.549	6.343	3.101
	0.2	94.427	0.007	8.449	6.949	18.827	12.484
釉瓷	1.2	78.207	1.365	8.401	-	2.741	-
	1.0	86.433	0.666	6.209	8.575	3.886	1.145
	0.8	88.177	0.388	5.558	1.966	5.444	1.558
	0.6	89.08	0.261	4.683	1.775	8.888	3.444
	0.4	91.559	0.096	3.931	2.623	14.113	5.225
	0.2	93.175	-0.138	2.527	2.238	30.339	16.226

	厚度（mm）	L^*	a^*	b^*	ΔE	T（%）	ΔT
体瓷	1.2	79.482	4.609	23.812	-	1.177	-
	1.0	85.294	3.674	23.814	5.892	1.555	0.378
	0.8	90.696	2.649	22.037	5.785	1.802	0.247
	0.6	90.356	1.809	18.952	3.245	3.242	1.440
	0.4	93.637	0.91	15.03	5.549	6.343	3.101
	0.2	94.427	0.007	8.449	6.949	18.827	12.484
釉瓷	1.2	78.207	1.365	8.401	-	2.741	-
	1.0	86.433	0.666	6.209	8.575	3.886	1.145
	0.8	88.177	0.388	5.558	1.966	5.444	1.558
	0.6	89.08	0.261	4.683	1.775	8.888	3.444
	0.4	91.559	0.096	3.931	2.623	14.113	5.225
	0.2	93.175	-0.138	2.527	2.238	30.339	16.226

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