Porosity and color of maxillofacial silicone elastomer

Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Muhanad M Hatamleh, David C Watts

Abstract

Prosthesis color production and stability as a result of pore entrapment during mixing has not been investigated for maxillofacial silicone prostheses. The purpose of this study was to investigate pore numbers and percentages of a maxillofacial silicone elastomer mixed by two different techniques, using X-ray microfocus computerized tomography (Micro-CT), and to investigate the effect of porosity on color reproducibility and stability after two different aging conditions. Sixty-four disk-shaped specimens were prepared (8-mm diameter, 3-mm thick) by mixing TechSil S25 silicone elastomer (Technovent, Leeds, UK) following two techniques: manual mixing (n = 32) and mechanical mixing under vacuum (n = 32). Half the specimens in each group were intrinsically pigmented, and the other half remained unpigmented. Pore numbers, volumes, and percentages were calculated using the Micro-CT, and then specimens of each subgroup were stored in simulated sebum for 6 months (n = 8), and exposed to accelerated daylight aging for 360 hours (n = 8). Color change (ΔE) was measured at the start and end of conditioning. Pore numbers and percentages were analyzed using one-way Analysis of Variance (ANOVA) and Dunnett's-T3 post-hoc tests (p < 0.05). Inde...Continue Reading

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Citations

Jul 6, 2014·TheScientificWorldJournal·Raghad Abdulrazzaq AlhashimiSanjukta Deb
Apr 21, 2012·Journal of Endodontics·Ahmad M El-Ma'aitaDavid C Watts
Jul 17, 2013·Journal of Applied Oral Science : Revista FOB·Panagiota N EleniLawrence Gettleman
Feb 6, 2017·The Journal of Prosthetic Dentistry·Thais Bianca BrandãoAlvin G Wee
Nov 30, 2019·Dental Materials Journal·Merve Bankoğlu GüngörNursel Dilsiz
Oct 2, 2020·European Journal of Dentistry·Adhara Smith NobregaMarcelo Coelho Goiato
Dec 26, 2018·The Journal of Advanced Prosthodontics·Seçil Karakoca NemliYeliz Kasko Arıcı
Jan 15, 2020·International Journal of Dentistry·Marcelo Coelho GoiatoClovis Lamartine de Moraes Melo Neto
Dec 3, 2014·The Journal of Prosthetic Dentistry·Emily S Willett, Mark W Beatty
May 4, 2021·Journal of Indian Prosthodontic Society·Priya GuptaRajesh Sethuraman

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