Physical Properties and Color Stainability by Coffee and Red Wine of Opaque and High Translucency Zirconia Dental Ceramics after Hydrothermal Degradation

Table 3

Percentage of crystalline phases of zirconia before and after low-temperature hydrothermal degradation in oral mouthwash sodium fluoride solution without alcohol (LTHD-F), oral mouthwash sodium fluoride solution with alcohol (LTHD-FA), and saline solution (LTHD-SS).

Experimental condition	Crystalline phases (wt. %)	ZrOp	ZrTrans
Sintered (control group)	m-ZrO2 (Monoclinic)	—	—
	t-ZrO2 (Tetragonal)	100	36.0
	c- ZrO2 (cubic)	—	64.0
LTHD-F	m-ZrO2 (Monoclinic)	30,8	—
	t-ZrO2 (Tetragonal)	69,2	35.0
	c- ZrO2 (cubic)		65.0
LTHD-FA	m-ZrO2 (Monoclinic)	21,0	—
	t-ZrO2 (Tetragonal)	79,0	35,2
	c- ZrO2 (cubic)	—	64,8
LTHD-SS	m-ZrO2 (Monoclinic)	27,3
	t-ZrO2 (Tetragonal)	72,7	36,0
	c- ZrO2 (cubic)	—	64,0