Effect of Thixotropic Agent on the Color Stability of Platinum-Based Silicone Maxillofacial Elastomers after Artificial Aging
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Discussion
5. Conclusions
- The amount of thixotropic agent plays a crucial role in determining the color stability of different silicone elastomers pigmented with various intrinsic pigments. The thixotropic agent amount has a more significant impact on the color stability than the type of pigment used in the silicone elastomers.
- In the mixed-pigmentation group, the addition of 4 drops of thixotropic agent resulted in color changes exceeding 3ΔE* only in the A-2186 silicone at the 300 and 450 kj/m2 energy levels. However, the color stability of mixed-pigmented A-2000 and A-2006 remained within the acceptable threshold at all irradiance levels in this study.
- At the 150 kj/m2 energy level, the addition of 0–5 drops of thixotropic agent did not significantly affect the color change in most of the silicone and pigment groups. All silicone and pigment groups, except for the yellow-pigmented A-2000, exhibited acceptable color changes at the 150 kj/m2 level.
- Yellow-pigmented A-2000 silicone with 4 drops of thixotropic agent showed color changes above the acceptability threshold at all three irradiance levels in this study.
- Among all the silicones, A-2006 exhibited the highest color stability with an increasing amount of thixotropic agent at each energy level. Conversely, A-2186 was more susceptible to the effects of an increased amount of thixotropic agent in each pigmentation group.
- The addition of thixotropic agents had a more adverse impact on A-2186 silicone elastomers compared to the other elastomers tested in this study at 300 and 450 kj/m2 energy levels.
- Clinicians should take caution when selecting the combination of silicone, thixotropic agent amount, and specific pigments during the fabrication of maxillofacial silicone prostheses. These factors can significantly influence the color stability of the prosthesis and should be carefully considered to achieve optimal results.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Silicone | Pigments | Control Thixo | 1-Drop Thixo | 2-Drop Thixo | 3-Drop Thixo | 4-Drop Thixo | 5-Drop Thixo |
---|---|---|---|---|---|---|---|
A-2000 | Control | 0.98 (0.25) | 1.15 (0.41) | 0.98 (0.16) | 1.47 (0.64) | 1.01 (0.61) | 0.83 (0.24) |
A-2000 | Red | 0.98 (0.19) | 0.83 (0.37) | 1.05 (0.17) | 1.05 (0.18) | 2.07 (0.32) | 1.41 (0.10) |
A-2000 | Yellow | 1.08 (0.32) | 0.90 (0.19) | 1.19 (0.16) | 1.78 (0.31) | 3.37 (0.31) | 1.88 (0.37) |
A-2000 | Blue | 0.74 (0.55) | 0.78 (0.27) | 1.16 (0.23) | 1.78 (0.50) | 1.84 (0.68) | 0.97 (0.11) |
A-2000 | Mixed | 1.14 (0.30) | 0.73 (0.30) | 1.43 (0.70) | 1.96 (0.64) | 2.24 (0.28) | 1.15 (0.15) |
A-2006 | Control | 0.83 (0.21) | 0.93 (0.14) | 1.18 (0.21) | 0.84 (0.28) | 0.96 (0.29) | 0.81 (0.44) |
A-2006 | Red | 0.91 (0.11) | 1.32 (0.33) | 1.42 (0.42) | 1.34 (0.35) | 2.05 (0.60) | 2.18 (0.16) |
A-2006 | Yellow | 0.99 (0.40) | 1.75 (0.18) | 1.35 (0.44) | 1.17 (0.52) | 1.43 (0.44) | 1.24 (0.28) |
A-2006 | Blue | 1.35 (0.46) | 0.89 (0.37) | 1.34 (0.24) | 0.89 (0.52) | 0.61 (0.19) | 1.38 (0.33) |
A-2006 | Mixed | 0.92 (0.56) | 0.96 (0.24) | 1.22 (0.19) | 0.66 (0.06) | 1.13 (0.37) | 0.91 (0.15) |
A-2186 | Control | 0.83 (0.08) | 0.68 (0.27) | 0.76 (0.12) | 0.64 (0.13) | 0.97 (0.02) | 0.94 (0.06) |
A-2186 | Red | 0.76 (0.21) | 0.90 (0.09) | 1.25 (0.58) | 0.94 (0.07) | 0.99 (0.07) | 1.45 (0.17) |
A-2186 | Yellow | 0.97 (0.04) | 0.72 (0.13) | 0.72 (0.12) | 0.86 (0.08) | 0.91 (0.16) | 1.09 (0.16) |
A-2186 | Blue | 0.57 (0.22) | 0.74 (0.15) | 0.73 (0.09) | 0.93 (0.13) | 0.91 (0.06) | 1.79 (0.56) |
A-2186 | Mixed | 0.44 (0.18) | 0.55 (0.24) | 0.79 (0.13) | 0.95 (0.04) | 1.14 (0.25) | 2.36 (0.47) |
Silicone | Pigments | Control Thixo | 1-Drop Thixo | 2-Drop Thixo | 3-Drop Thixo | 4-Drop Thixo | 5-Drop Thixo |
---|---|---|---|---|---|---|---|
A-2000 | Control | 1.11 (0.21) | 1.05 (0.31) | 1.51 (0.29) | 1.90 (0.37) | 1.58 (1.00) | 1.89 (0.62) |
A-2000 | Red | 0.76 (0.09) | 0.95 (0.24) | 1.47 (0.25) | 2.39 (0.38) | 3.30 (0.65) | 2.80 (0.48) |
A-2000 | Yellow | 1.38 (0.26) | 1.19 (0.31) | 1.55 (0.28) | 2.23 (0.31) | 4.12 (0.34) | 3.04 (0.41) |
A-2000 | Blue | 1.05 (0.30) | 1.32 (0.23) | 1.46 (0.36) | 2.31 (0.29) | 3.09 (0.67) | 1.49 (0.16) |
A-2000 | Mixed | 1.39 (0.31) | 0.69 (0.44) | 1.48 (0.23) | 2.38 (0.44) | 2.78 (0.35) | 1.84 (0.67) |
A-2006 | Control | 1.06 (0.14) | 1.14 (0.31) | 1.62 (0.24) | 1.15 (0.40) | 1.25 (0.14) | 1.45 (0.56) |
A-2006 | Red | 1.32 (0.50) | 1.65 (0.23) | 2.46 (0.23) | 2.08 (0.24) | 4.22 (0.16) | 2.49 (0.40) |
A-2006 | Yellow | 1.14 (0.28) | 2.33 (0.28) | 1.53 (0.32) | 1.52 (0.50) | 1.45 (0.16) | 2.11 (0.34) |
A-2006 | Blue | 1.42 (0.26) | 1.95 (0.31) | 1.82 (0.20) | 1.42 (0.23) | 0.73 (0.12) | 2.08 (0.23) |
A-2006 | Mixed | 1.21 (0.67) | 1.16 (0.26) | 1.45 (0.26) | 1.02 (0.11) | 1.70 (0.32) | 1.01 (0.13) |
A-2186 | Control | 1.36 (0.12) | 1.13 (0.21) | 1.62 (0.23) | 0.88 (0.15) | 1.66 (0.10) | 2.24 (0.11) |
A-2186 | Red | 1.58 (0.36) | 1.51 (0.12) | 1.57 (0.18) | 1.51 (0.21) | 1.97 (0.17) | 2.56 (0.16) |
A-2186 | Yellow | 1.28 (0.10) | 1.10 (0.10) | 1.23 (0.17) | 1.40 (0.15) | 2.10 (0.26) | 1.99 (0.17) |
A-2186 | Blue | 1.32 (0.21) | 1.642 (0.25) | 1.33 (0.15) | 1.49 (0.19) | 2.24 (0.29) | 2.35 (0.87) |
A-2186 | Mixed | 1.00 (0.07) | 1.57 (0.02) | 1.54 (0.19) | 1.70 (0.20) | 1.95 (0.11) | 3.53 (0.40) |
Silicone | Pigments | Control Thixo | 1-Drop Thixo | 2-Drop Thixo | 3-Drop Thixo | 4-Drop Thixo | 5-Drop Thixo |
---|---|---|---|---|---|---|---|
A-2000 | Control | 1.03 (0.13) | 1.22 (0.35) | 1.75 (0.57) | 1.46 (0.62) | 1.17 (0.90) | 1.91 (0.50) |
A-2000 | Red | 1.49 (0.11) | 1.18 (0.35) | 1.27 (0.23) | 1.29 (0.27) | 2.680 (0.59) | 1.55 (0.20) |
A-2000 | Yellow | 1.35 (0.16) | 1.67 (0.14) | 2.56 (0.50) | 2.66 (0.39) | 3.66 (0.09) | 3.41 (0.62) |
A-2000 | Blue | 1.73 (0.46) | 1.01 (0.44) | 1.46 (0.36) | 2.25 (0.37) | 1.89 (0.40) | 1.33 (0.21) |
A-2000 | Mixed | 1.65 (0.11) | 0.85 (0.27) | 1.92 (0.21) | 1.78 (0.48) | 2.89 (1.07) | 1.33 (0.07) |
A-2006 | Control | 0.98 (0.17) | 1.44 (0.24) | 1.64 (0.07) | 1.78 (0.67) | 1.61 (0.03) | 1.48 (0.49) |
A-2006 | Red | 1.60 (0.25) | 2.25 (0.07) | 2.42 (0.31) | 2.63 (0.82) | 4.42 (0.18) | 2.47 (0.35) |
A-2006 | Yellow | 1.58 (0.19) | 2.15 (0.21) | 1.63 (0.24) | 1.99 (0.46) | 1.92 (0.25) | 2.59 (0.34) |
A-2006 | Blue | 1.94 (0.48) | 2.37 (0.24) | 1.79 (0.25) | 0.87 (0.25) | 1.14 (0.28) | 2.44 (0.33) |
A-2006 | Mixed | 1.68 (0.66) | 1.50 (0.24) | 1.48 (0.20) | 1.10 (0.09) | 1.92 (0.26) | 1.59 (0.38) |
A-2186 | Control | 1.39 (0.21) | 1.68 (0.16) | 1.83 (0.19) | 1.42 (0.30) | 2.84 (0.25) | 3.13 (0.06) |
A-2186 | Red | 2.04 (0.13) | 1.89 (0.10) | 2.18 (0.21) | 2.43 (0.22) | 3.75 (0.27) | 4.76 (0.26) |
A-2186 | Yellow | 1.65 (0.21) | 1.38 (0.09) | 1.95 (0.08) | 2.00 (0.22) | 3.30 (0.23) | 3.58 (0.26) |
A-2186 | Blue | 1.66 (0.14) | 1.93 (0.23) | 1.66 (0.12) | 2.01 (0.29) | 2.93 (0.23) | 5.98 (0.79) |
A-2186 | Mixed | 1.31 (0.35) | 1.66 (0.16) | 1.90 (0.16) | 2.23 (0.20) | 2.84 (0.25) | 3.54 (0.33) |
Sum Sq | Df | F Value | Pr (>F) | |
---|---|---|---|---|
Silicone | 3.754 | 2 | 16.2243 | 1.142 × 10−7 |
Pigment | 50.915 | 4 | 110.0260 | <2.2 × 10−16 |
Aging | 180.545 | 2 | 780.3033 | <2.2 × 10−16 |
Drops | 167.066 | 5 | 288.8196 | <2.2 × 10−16 |
Silicone:pigment | 49.194 | 8 | 53.1532 | <2.2 × 10−16 |
Silicone:aging | 48.259 | 4 | 104.2860 | <2.2 × 10−16 |
Pigment:aging | 6.254 | 8 | 6.7571 | 1.131 × 10−8 |
Silicone:drops | 93.160 | 10 | 80.5258 | <2.2 × 10−16 |
Pigment:drops | 38.776 | 20 | 16.7586 | <2.2 × 10−16 |
Aging:drops | 19.605 | 10 | 16.9461 | <2.2 × 10−16 |
Silicone:pigment:aging | 9.601 | 16 | 5.1869 | 1.369 × 10−10 |
Silicone:pigment:drops | 81.861 | 40 | 17.6898 | <2.2 × 10−16 |
Silicone:aging:drops | 32.102 | 20 | 13.8741 | <2.2 × 10−16 |
Pigment:aging:drops | 20.504 | 40 | 4.4308 | <2.2 × 10−16 |
Silicone:pigment:aging:drops | 31.827 | 80 | 3.4389 | <2.2 × 10−16 |
Residuals | 124.944 | 1080 | ||
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Kiat-amnuay, S.; Cevik, P.; Kurtoglu, C. Effect of Thixotropic Agent on the Color Stability of Platinum-Based Silicone Maxillofacial Elastomers after Artificial Aging. Materials 2023, 16, 5867. https://doi.org/10.3390/ma16175867
Kiat-amnuay S, Cevik P, Kurtoglu C. Effect of Thixotropic Agent on the Color Stability of Platinum-Based Silicone Maxillofacial Elastomers after Artificial Aging. Materials. 2023; 16(17):5867. https://doi.org/10.3390/ma16175867
Chicago/Turabian StyleKiat-amnuay, Sudarat, Pinar Cevik, and Cem Kurtoglu. 2023. "Effect of Thixotropic Agent on the Color Stability of Platinum-Based Silicone Maxillofacial Elastomers after Artificial Aging" Materials 16, no. 17: 5867. https://doi.org/10.3390/ma16175867