Table 4 Mean and SD values of translucency of materials in three sections at different sintering temperatures

UG

Cervical

26.91 ± 0.66

26.65 ± 0.36

26.82 ± 0.75^B

27.07 ± 0.85

26.60 ± 0.32

0.947

0.446

Body

27.80 ± 0.48

27.95 ± 0.26

27.76 ± 0.68^A

28.39 ± 0.90

27.93 ± 0.52

1.678

0.172

Incisal

27.93 ± 0.63^b

28.42 ± 0.52^b

28.42 ± 0.64^A,b

29.62 ± 0.63^a

28.55 ± 0.61^b

10.584

< 0.001

UM

Cervical

31.44 ± 0.49^a

31.44 ± 0.52^a

31.39 ± 0.74^A,a

30.45 ± 0.76^b

25.09 ± 1.01^c

142.966

< 0.001

Body

31.94 ± 0.52^a

31.60 ± 0.62^a

31.33 ± 0.56^A,a

30.38 ± 0.80^b

24.97 ± 0.87^c

177.074

< 0.001

Incisal

31.81 ± 0.71^a

31.22 ± 0.77^a,b

30.51 ± 0.76^B,b,c

29.75 ± 0.79^c

23.13 ± 0.78^d

213.791

< 0.001

CX

Cervical

29.48 ± 0.95^a

28.63 ± 0.85^a,b

28.46 ± 0.95^A,a,b

29.00 ± 1.09^a,b

28.15 ± 0.80^b

3.020

0.027

Body

29.43 ± 0.90^a

28.28 ± 0.86^b

28.04 ± 0.77^A,b

28.34 ± 0.68^b

27.82 ± 0.80^b

5.953

0.001

Incisal

28.10 ± 0.72^a

26.51 ± 0.94^c

26.82 ± 0.59^B,b

26.81 ± 0.98^b

25.67 ± 1.08^c

9.888

< 0.001

LE

Cervical

22.02 ± 1.06^c

24.68 ± 0.93^b

26.53 ± 0.43^A,a

26.87 ± 0.62^a

26.46 ± 0.60^a

70.769

< 0.001

Body

21.30 ± 0.97^c

23.65 ± 0.71^b

25.85 ± 0.47^A,a

26.48 ± 0.67^a

26.17 ± 0.51^a

102.171

< 0.001

Incisal

20.34 ± 0.94^d

22.92 ± 0.76^c

24.40 ± 0.99^B,b

25.44 ± 0.45^a

24.84 ± 0.67^a,b

67.390

< 0.001