Effect of Nano-Titanium Dioxide on the Color Stability and Mechanical Properties of Factor II A-103 Compare with Multisil-Epithetics Maxillofacial Silicone Elastomer

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Thanaporn Phayuha
Pitpern Chanatapaporn
Tularat Sookto
Subin Puasiri


The objectives of this study were to evaluate the effects of nano-titanium dioxide on the color stability of pigmented silicone Factor II A-103 maxillofacial prosthetic elastomers compare with Multisil- Epithetics before and after artificial aging and to evaluate physical properties. Fifty disc-shaped maxillofacial silicone elastomer specimens in each group were fabricated for color stability evaluation. The first group was fabricated from Factor II A-103 with 2% wt nano-titanium dioxide, the second group was fabricated from Factor II A-103 without 2% wt nano-titanium dioxide and the last group was fabricated from Multisil-Epithetics. The first and the second group were colored with intrinsic silicone pigment for the same color like Multisil-Epithetics. Total of 150 specimens were aged in an artificial aging chamber (Q-Sun xenon test chamber LX 5050, USA) for 600 hrs. Color changes (ΔE*) were calculated based on the recorded CIElab values using spectrophotometer (HunterLab, ColorQuest ® XE, USA) at base line (0 hour) and then every 100 hours up to 600 hours of aging. For the physical properties test 16 dumbbell-shaped and 16 trouser-shaped of each group were fabricated and tested for tensile strength, percentage elongation and tear strength in a universal testing machine. Kruskal-Wallis was performed for analyze the differences among group at 95% confidence level and Friedman’s two way ANOVA was used to compare mean ΔE* value of each group in each time period (100-600 hrs.). For color stability test, Multisil-Epithetics exhibited smallest color changes (ΔE*=3.67) followed by Factor II A-103 with 2% wt nano-titanium dioxide (ΔE*=10.8) and Factor II A-103 without 2% wt nano-titanium dioxide (ΔE*=11.03) respectively. Multisil-Epithetics had statistically significant differences in comparison to the other groups (p<0.001). Delta-E values of all groups after 600 hours aging was higher than acceptable threshold (ΔE*=3.3).  For mechanical properties test, Factor II A-103 with 2% wt nano-titanium dioxide demonstrated significantly higher tensile strength, percentage elongation and tear strength than Multisil-Epithetics (P<0.001).  There was no significant difference of tensile strength, percentage elongation and tear strength between Factor II A-103 with and without 2% wt nano-titanium dioxide. In conclusions, incorporation of nano-titanium dioxide improved the color stability of Factor II A-103 silicone elastomer in 300 hrs. from artificial aging, but did not improve the color stability in the long term and did not improve the physical properties of the material.


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Phayuha T, Chanatapaporn P, Sookto T, Puasiri S. Effect of Nano-Titanium Dioxide on the Color Stability and Mechanical Properties of Factor II A-103 Compare with Multisil-Epithetics Maxillofacial Silicone Elastomer. Khon Kaen Dent J [Internet]. 2021 Mar. 28 [cited 2023 Jan. 29];24(1):28-40. Available from: https://he01.tci-thaijo.org/index.php/KDJ/article/view/243198
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Kiat-amnuay S, Beerbower M, Powers JM, Paravina RD. Influence of pigments and opacifiers on color stability of silicone maxillofacial elastomer.J Dent 2009;37(1): 45-50.

Hatamleh MM, Watts DC. Mechanical properties and bonding of maxillofacial silicone elastomers. Dent Mater 2010;26(2):185-91.

The Academy of Prosthodontics Foudation . The Glossary of Prosthodontic Terms. J prosthet Dent (Internet). 2017[cited 2020 March 1]; 117(5):56. Available from:https://www.Academy of prosthodontics. org/_Library/ ap_articles_download/ GPT9.pdf

Mahajan H, Gupta K. Maxillofacial Prosthetic Materials: A Literature Review. J Orofac Res 2012;2(2):87-90.

Barhate A, Gangadhar S, Bhandari A, Joshi A. Materials usedin maxillofacial prosthesis : A review. Pravara Med Rev 2015;7(1):5-8.

Mohammad SA, Wee AG, Rumsey DJ, Schricker SR. Maxillofacial Materials Reinforced with Various Concentrations of Polyhedral Silsesquioxanes. J Dent Biomech 2010;1-6.

Mitra A, Choudhary S, Garg H, Jagadeesh HG. Maxillofacial prosthetic materials- an inclination towards silicones. J Clin and Diagn Res 2014;8(12):08-13.

Lai JH, Wang LL, Ko CC, DeLong RL, Hodges JS. New organosilicon maxillofacial prosthetic materials. Dent Mater 2002;18(3):281-6.

Beatty MW, Mahanna GK, Dick K, Jia W. Color changes in dry-pigmented maxillofacial elastomer resulting from ultraviolet light exposure. J Prosthet Dent 1995;74(5): 493-8.

Lemon JC, Chambers MS, Jacobsen ML, Powers JM. Color stability of facial prostheses. J Prosthet Dent 1995; 74(6):613-8.

Polyzois GL. Color stability of facial silicone prosthetic polymers after outdoor weathering. J Prosthet Dent 1999;82(4):447-50.

Han Y, Zhao Y, Xie C, Powers JM, Kiat-amnuay S.Color stability of pigmented maxillofacial silicone elastomer: Effects of nano-oxides as opacifiers. J Dent 2010;38(2): 100-5.

Han Y, Kiat-amnuay S, Powers JM, Zhao Y. Effect of nano-oxide concentration on the mechanical properties of a maxillofacial silicone elastomer. J Prosthet Dent 2008; 100(6):465-73.

Akash RN, Guttal SS. Effect of Incorporation of nano-oxides on color stability of maxillofacial silicone elastomer subjected to outdoor weathering. J Prosthodont 2015; 24(7): 569-75.

Shakir DA, Abdul - Ameer FM. Effect of nano titanium oxide addition on color stability on two types of maxillofacial silicone materials. Int J Sci Res 2017; 6(12): 1796-1801.

Eltayyar NH, Alshimy AM, Abushelib MN. Evaluation of intrinsic color stability of facial silicone elastomer reinforced with different nanoparticles. Alex Dent J 2016; 41(1):50-4.

Li R, Yabe S, Yamashita M, Momose S, Yoshida S, Yin S, et al. UV-shielding properties of zinc oxide-doped ceria fine powders derived via soft solution chemical routes. Mater Chem Phys 2002;75(1):39-44.

Sujaridworakun P. Titanium dioxide photocatalyst and daily life. J MTEC 2005;(40):76-9.

Allen NS, Edge M, Ortega A, Sandoval G, Liauw CM, Verran J, et al. Degradation and stabilisation of polymers and coatings: nano versus pigmentary titania particles. Polym Degrad Stabil 2004;85(3):927-46.

Farah A, Sherriff M, Coward T. Color stability of nonpigmented and pigmented maxillofacial silicone elastomer exposed to 3 different environments. J Prosthet Dent 2018;120(3):476-82.

Beumer J, Reisberg DJ, Marunick MT, Powers JM, Kiat-amnuay S, Oort RV. Rehabilitation of Facial Defects. In : Beumer J, Marunick MT, Esposito S, editors. Maxillofacial Rehabilitation: Prosthodontic and Surgical Considerations. 3rd ed. Chicago : Quintessence Publishing; 2011. 255-313.

Wang L, Liu Q, Jing D, Zhou S, Shao L. Biomechanical properties of nano-TiO2 addition to a medical silicone elastomer: The effect of artificial ageing. J Dent 2014; 42(4):475-83.

Radey NS, AI Shimy AM, Ahmed DM. Effect of extraoral aging conditions on mechanical properties of facial silicone elastomer reinforced titanium-oxide nanoparticles (In vitro study). Alex Dent J 2019;20(10):1-26.

Zhu A-J, Sternstein SS. Nonlinear viscoelasticity of nanofilled polymers: interfaces, chain statistics and properties recovery kinetics. Compos Sci Technol 2003; 63(8):1113-26.

Bellamy K, Limbert G, Waters MG, Middleton J.An elastomeric material for facial prostheses:synthesis, experimental and numerical testing aspects.Biomaterials 2003;24(27):5061-6.