Analysis of Color and Hardness of a Medical Silicone with Extrinsic Pigmentation after Accelerated Aging

Santos, Daniela Micheline dos; Paulini, Marcela Borgui; Faria, Tamires Gabrielle Silva; Neto, Clóvis Lamartine de Moraes Melo; Silva, Emily Vivianne Freitas da; Caxias, Fernanda Pereira de; Bertoz, André Pinheiro de Magalhães

doi:10.1055/s-0040-1715782

Cited by 6 publications

(42 citation statements)

References 26 publications

(172 reference statements)

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“…Medical grade silicone and silicone adhesives were used in this case to maintain biological compatibility with the tissues. As concluded from the study of Dos Santos DM et al [19]. Intrinsic staining was used to increase the life-like appearance of the prosthesis decrease the fading of the color of the silicone prosthesis.…”

Section: Figure 8: the Retentive Aids Used Includes Cobalt Samarium M...mentioning

confidence: 99%

Rehabilitation of a Midfacial Defect Using a Two-Piece Maxillofacial Prosthesis: A Case Report

Vadlamudi¹,

Bathala²,

Tammineedi³

et al. 2022

Cureus

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Maxillofacial defects and their rehabilitation are a major concern in this socially productive era. The rehabilitation of these massive defects in the oral and maxillofacial region poses a challenge to the prosthodontist in terms of selection of material, retentive aids, the adaptive capability of the patient, and cost. This case report describes the management of the midfacial defect involving the orbit, zygoma, maxilla, and their soft tissue counterparts with a removable silicone extraoral compartment and an acrylic intraoral compartment, which are retained with strong cobalt samarium magnets, an elastic loop around the occiput, and spectacles. The maxillofacial prosthesis fabricated for this patient restored the patient's facial esthetics, speech, dental articulation, lip support, mastication, and anterior maxillary seal.

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Section: Figure 8: the Retentive Aids Used Includes Cobalt Samarium M...mentioning

confidence: 99%

Rehabilitation of a Midfacial Defect Using a Two-Piece Maxillofacial Prosthesis: A Case Report

Vadlamudi¹,

Bathala²,

Tammineedi³

et al. 2022

Cureus

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“…[2][3][4][5][6][7][8] The black pigment also corresponded to 0.2% of the weight of each silicone. [2][3][4][5][6][7][8] For the pink pigment, the pigments that constituted it corresponded to 0.122% (yellow), 0.006% (black), 0.03% (red), and 0.6% TiO 2 (opacifier) of the weight of each silicone. 2,[5][6][7][8] The industrial method of incorporating pigment into silicone was used.…”

Section: Manufacturing Of Samplesmentioning

confidence: 99%

“…2,5,6,9 The literature reports that the replacement of a silicone prosthesis occurs from 3 to 12 months after its manufacture due to its degradation. 2,3,6 Sorption and solubility of a material are clinically important characteristics. 2 The sorption represents the amount of water adsorbed on the surface of a material and absorbed by its body.…”

Section: Introductionmentioning

confidence: 99%

“…Facial prostheses may be used to rehabilitate patients with orofacial defects because they help to restore the patient’s self-esteem, quality of life, esthetics, and social life. 2 3 4 5 6 7 8 Silicone elastomer is the most used option to manufacture maxillofacial prostheses. 2 3 4 5 6 7 The advantage of this type of material is its ability to imitate human skin tissue both aesthetically and functionally.…”

Section: Introductionmentioning

confidence: 99%

“… 2 3 4 5 6 7 8 Silicone elastomer is the most used option to manufacture maxillofacial prostheses. 2 3 4 5 6 7 The advantage of this type of material is its ability to imitate human skin tissue both aesthetically and functionally. 1 4 The MDX4-4210 and A-2186 silicones are examples of two widely used silicones.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Accelerated Aging on the Sorption and Solubility Percentages of Silicone Facial Prostheses

et al. 2021

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Objective This study aimed to evaluate the effect of accelerated aging on the sorption and solubility percentages of the MDX4-4210 and A-2186 silicones. Materials and Methods Two silicones (A-2186 and MDX4-4210) and three intrinsic pigments (bronze, black, and pink) were used in this study. Thus, six groups were created (n = 10): Group 1 = bronze MDX4-4210; Group 2 = black MDX4-4210; Group 3 = pink MDX4-4210; Group 4 = bronze A-2186; Group 5 = black A-2186; and Group 6 = pink A-2186. The dimensions of all samples were the same (45-mm diameter (ø) × 1-mm thickness). The samples were aged for a total of 1,008 hours. In this period of 1,008 hours of accelerated aging, the sorption and solubility percentages of each sample were calculated at three time points (252, 504, and 1,008 hours). Statistical Analysis Three-way analysis of variance (ANOVA) and the Tukey test were performed (α = 0.05). Result Accelerated aging can significantly increase the sorption and solubility percentages of the MDX4-4210 and A-2186 silicones.

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Effect of Extrinsic Pigmentation on Dimensional Stability, Hardness, Detail Reproduction, and Color of a Silicone

et al. 2022

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Objective The aim of the study is to evaluate the effect of extrinsic pigmentation on the dimensional stability, hardness, detail reproduction, and color of a silicone after thermocycling. Materials and Methods Sixty samples of MDX4–4210 silicone (Dow Corning Corporation Medical Products) with intrinsic pink pigment (H-109-P, Factor II) and intrinsic opacifier (TiO) were fabricated. Two groups were created: Group 1—only intrinsic pigmentation (H-109P, Factor II + TiO) (Control); and Group 2—intrinsic (H-109P, Factor II + TiO) and extrinsic (Tan FE - 215, Factor II) pigmentation. The following tests were performed for each group: dimensional stability, Shore A hardness, detail reproduction, and color. Readings for the tests were taken before and after thermocycling (2,000 cycles). For dimensional stability and hardness, two-way analysis of variance (ANOVA) was used. One-way ANOVA was used for the color test. In case of significant statistical difference, the Tukey test was applied (p <0.05). All samples achieved the same detail reproduction score, therefore, no statistical evaluation was performed. Results For the dimensional stability test, comparing the initial time with the final time, there was a significant contraction in both groups after thermocycling. For the hardness test, comparing the time points, only group 1 showed a significant reduction in hardness after thermocycling. Groups 1 and 2 scored 2 for the detail reproduction test, before and after thermocycling. Comparing group 1 with group 2, there was no significant difference for color change. Conclusion Based on the tests performed, extrinsic pigmentation did not show a negative effect on silicone, and therefore it can be indicated. The results of the dimensional, hardness, detail reproduction and color evaluations of the MDX4–4210 silicone were clinically acceptable in all cases in the groups with and without extrinsic pigmentation.

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Analysis of Color and Hardness of a Medical Silicone with Extrinsic Pigmentation after Accelerated Aging

Cited by 6 publications

References 26 publications

Rehabilitation of a Midfacial Defect Using a Two-Piece Maxillofacial Prosthesis: A Case Report

Rehabilitation of a Midfacial Defect Using a Two-Piece Maxillofacial Prosthesis: A Case Report

Effect of Accelerated Aging on the Sorption and Solubility Percentages of Silicone Facial Prostheses

Effect of Extrinsic Pigmentation on Dimensional Stability, Hardness, Detail Reproduction, and Color of a Silicone

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