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Table 2 The shade variation from resin substrates to veneer-resin composites

From: Final shade and whiteness: impact of various ultra-thin CAD/CAM veneers and tooth-colored resin substrates

Resin substrates

Initial shade

Final shade

BL2

BL3

BL4

B1

A1

A2

A3

A2

2R2.5a

2M1a

2L1.5 a

2R1.5a

2L1.5a

2R1.5a

2L1.5a

2R1.5a

2L1.5a

2R1.5a

2R1.5a

2R1.5b

2R2.5b

A3

3L2.5b

2L1.5a

2R1.5a

2L1.5a

2R1.5a

2R1.5b

2R2.5b

2R2.5b

2R2.5b

2R2.5b

A3.5

3M3b

2R2.5b

3M2b

3M2a

3L2.5a

3L2.5a

3L2.5a

3L2.5a

3L2.5a

3L2.5a

3M3a

A4

4L2.5b

3L1.5a

3M2a

3L1.5a

3M2a

3L1.5b

3L1.5b

4L1.5b

4M2b

4M2b

  1. The shades of veneer-resin composites (final shade) and the resin substrates (initial shade) were matched when the ΔE00(C-G) or ΔE00(R-G) below AT, otherwise the minimal value was used for shade matching
  2. "a"indicating the value of ΔE00(C-G) or ΔE00(R-G) below AT
  3. "b"indicating the value of ΔE00(C-G) or ΔE00(R-G) exceeding AT