Table 1 Characteristics of included studies
Author | Study type | Selection method | Sample size | ΔΕ (mean ± SD) µm | Conclusions |
|---|---|---|---|---|---|
Hampé-Kautz [8] | In vivo | 1. Visual method (Vita 3D-MASTER shade guide) 2. Instrumental method (Spectrophotometer) 3. Instrumental method (TRIOS III IOS) 4. Instrumental method (CEREC Omnicam IOS) | 40 | 2.35 ± 0.25 1.85 ± 0.26 2.75 ± 0.27 2.75 ± 0.23 | Shade determination with a spectrophotometer showed the best accuracy while IOSs presented the worst results |
Jorquera [9] | In vivo | 1. Visual method (Vita Classical shade guide) 2. Instrumental method (digital camera with a cross-polarized filter) 3. Instrumental method (Smartphone with light-correction filter) | 15 | 5.32 ± 0.64 2.75 ± 0.40 2.34 ± 0.42 | Shade selection with a digital camera and smartphone was significantly more accurate than the visual method |
Alshiddi [10] | In vivo | 1. Visual method (Vita 3D-Master shade guide) 2. Instrumental method (spectrophotometer) | 8 | 4.22 ± 1.56 3.75 ± 1.71 | Shade matching with the instrumental method is significantly more accurate than the visual method |
Czigola [11] | In vivo | 1. Visual method (Vita 3D-Master shade guide) 2. Visual method (Vita Classical shade guide) 3. Instrumental method (spectrophotometer) 4. Instrumental method (TRIOS III IOS) | 10 | NR | Vita 3D-Master shade guide produced the best shade matching followed by the spectrophotometer, IOS, and Vita Classical shade guide |
Mahn [12] | In vivo | 1. Visual method (Vita Classical shade guide) 2. Instrumental method (digital camera with a cross-polarized filter) | 60 | 7 ± 5.14 6.05 ± 2.17 | The instrumental shade selection with a digital camera had better shade selection acceptability compared with the visual method |
Alsaleh [13] | In vivo | 1. Visual method (Vita Classical shade guide) 2. Instrumental method (spectrophotometer) | 15 | 5.85 ± 2.90 5 ± 2.50 | The instrumental shade assessment had better acceptability than the visual assessment |
Brandt [14] | In vivo | 1. Visual method (Vita 3D-Master shade guide) 2. Instrumental method (TRIOS III IOS) | 107 | 5.52 ± 2.47 4.99 ± 2.73 | The shade determination with IOS is a good alternative to visual shade selection or can be used in conjugation with it |