Table 1 The number of edge difference between MARoff image and MARon image according to different voxel size and tube voltage.

From: Quantitative analysis of metal artifact reduction using the auto-edge counting method in cone-beam computed tomography

Prosthesis type

Voxel (mm3)

Tube voltage (kVp)

70

100

P-value

Amalgam restoration

0.2

27.18 ± 10.48

22.97 ± 10.55

0.104

0.3

13.05 ± 10.35

14.27 ± 8.04

0.663

P-value

0.000*

0.002*

 

Gold crown

0.2

67.74 ± 33.22

66.93 ± 27.61

0.900

0.3

35.48 ± 17.56

35.03 ± 13.59

0.910

P-value

0.000*

0.000*

 

PFM crown

0.2

34.24 ± 19.71

25.29 ± 22.56

0.056

0.3

11.77 ± 13.53

12.45 ± 12.85

0.841

P-value

0.000*

0.003*

 

Zirconia crown

0.2

22.19 ± 7.92

22.70 ± 17.66

0.843

0.3

14.26 ± 6.57

16.82 ± 9.97

0.192

P-value

0.000*

0.041*

 
  1. MAR; metal artifact reduction, PFM; porcelain-fused-metal.
  2. Data are presented as mean ± standard deviation.
  3. *p-value by independent t-test.
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