{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T01:04:47Z","timestamp":1759799087624,"version":"build-2065373602"},"reference-count":36,"publisher":"Universidade Estadual de Campinas","license":[{"start":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T00:00:00Z","timestamp":1759708800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. J. Oral Sci."],"abstract":"<jats:p>Objective: To evaluate the effects of pigmentation, hygiene protocols, and time on the physical, mechanical, and chemical properties, as well as the thermal behavior of MDX4-4210 and Silpuran 2420 silicones. Methods: Samples without pigmentation (WP;n=45), with intrinsic pigmentation (IP;n=45), and with intrinsic and extrinsic pigmentation (IEP;n=45) were tested. Samples were washed daily with neutral soap and immersed in water (control - C), washed daily with neutral soap and immersed in 2% hydrogen peroxide (HP2%), or washed daily with neutral soap and immersed in 0.15% triclosan (T0.15%) once a week for six months (T1). Subsequently, they were exposed to ultraviolet radiation and humidity, simulating 12 months (T2). Color, Shore A hardness, surface roughness, chemical properties, and thermal behavior were evaluated at T0, T1, and T2. Data were analyzed using a general linear model employing the Wald test and repeated measures for color and hardness changes, and ANOVA with Tukey\u2019s post hoc test for surface roughness (\u03b1=0.05). Results: In MDX4-4210, WP and IEP had the greatest color change at T2 with T0.15% (p=0.020). IEP showed higher roughness at T1 and T2 but lower hardness variation (p&lt;0.001). Hygiene protocols influenced roughness and hardness (p&lt;0.05). In Silpuran, IEP had the highest color variation at T2, with reduced roughness and hardness, regardless of hygiene (p&lt;0.001). Conclusion: IEP impacted color stability over time in both silicones when exposed to HP2% and T0.15%. Hardness changes did not compromise material quality. IEP groups showed lower roughness variation. Chemical and thermal behavior were unaffected by pigmentation or hygiene.<\/jats:p>","DOI":"10.20396\/bjos.v24i00.8676503","type":"journal-article","created":{"date-parts":[[2025,10,6]],"date-time":"2025-10-06T19:54:17Z","timestamp":1759780457000},"page":"e256503","source":"Crossref","is-referenced-by-count":0,"title":["Effect of different pigmentations, hygieneprotocols, and time on maxillofacial silicone properties"],"prefix":"10.20396","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3010-0785","authenticated-orcid":false,"given":"Carla Maria de Almeida Prado","family":"Magdalena","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2334-2989","authenticated-orcid":false,"given":"Arthur Augusto Martins e","family":"Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4037-8548","authenticated-orcid":false,"given":"Priscila Lai","family":"Liu","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1064-3523","authenticated-orcid":false,"given":"Ana Paula","family":"Macedo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7152-1266","authenticated-orcid":false,"given":"Gr\u00e9goire Jean-Francois","family":"Demets","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1629-2207","authenticated-orcid":false,"given":"Cl\u00e1udia Helena","family":"Silva-Lovato","sequence":"additional","affiliation":[]}],"member":"27633","published-online":{"date-parts":[[2025,10,6]]},"reference":[{"key":"1345279","doi-asserted-by":"crossref","unstructured":"1. 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