Properties of silicone maxillofacial elastomer processed in stone and metal

Raptis, C.N.; Yu, Robert K.; Knapp, Jill

doi:10.1016/0022-3913(80)90107-9

Cited by 16 publications

(7 citation statements)

References 3 publications

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“…It is well documented that polymerization process continues after deflasking of heat-polymerized silicones 2728. The TBS values of Molloplast B in Control7 group were significantly higher than those of Control1.…”

Section: Discussionmentioning

confidence: 86%

Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Ekren

Özkömür

2016

J Adv Prosthodont

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PURPOSEThe aim of this study was to evaluate the effect of paracetic acid (PAA) and ozone disinfection on the tensile bond strength (TBS) of silicone-based resilient liners to acrylic resins.MATERIALS AND METHODSOne hundred and twenty dumbbell shaped heat-polymerized acrylic resins were prepared. From the mid segment of the specimens, 3 mm of acrylic were grinded off and separated parts were reattached by resilient liners. The specimens were divided into 2 control (control1, control7) and 4 test groups of PAA and ozone disinfection (PAA1, PAA7, ozone1 and ozone7; n=10). While control groups were immersed in distilled water for 10 min (control1) and 7 days (control7), test groups were subjected to PAA (16 g/L) or ozone rich water (4 mg/L) for 1 cycle (10 min for PAA and 60 min for ozone) per day for 7 days prior to tensile tests. Measurements of the TBS were analyzed using 3-way ANOVA and Tukey's HSD test.RESULTSAdhesive strength of Mollosil decreased significantly by application of ozone disinfection. PAA disinfection had no negative effect on the TBS values of Mollosil and Molloplast B to acrylic resin. Single application of ozone disinfection did not have any negative effect on TBS values of Molloplast B, but prolonged exposure to ozone decreased its adhesive strength.CONCLUSIONThe adhesion of resilient liners to acrylic was not adversely affected by PAA disinfection. Immersion in ozonated water significantly decreased TBS of Mollosil. Prolonged exposure to ozone negatively affects adhesion of Molloplast B to denture base materials.

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Section: Discussionmentioning

confidence: 86%

Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Ekren

Özkömür

2016

J Adv Prosthodont

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“…Plaster molds have more micro‐irregularities on their surfaces than fabricated metal molds do. These irregularities may create stress concentrations by getting inside the un‐vulcanized silicone during polymerization . The conventional plaster mold technique could be preferred for reproducing the clinical practice; however, as this study is a material test, it is important that the data provided in the study are accurate and standard.…”

Section: Discussionmentioning

confidence: 99%

Effects of the Addition of Titanium Dioxide and Silaned Silica Nanoparticles on the Mechanical Properties of Maxillofacial Silicones

Çevik

Eraslan

2016

Journal of Prosthodontics

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Results in this in vitro study may clarify future studies about the effect of different additives on the physical and mechanical properties of maxillofacial elastomers. There is a great interest in the effect of a new-generation hydrophobic silica incorporation into A-2000 silicone as well as the effect of fumed hydrophilic silica incorporation into A-2006 silicone. Future research should be supported with more in vitro trials in different percentages of such additives used in this study.

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“…On the other hand, nonpigmented specimens placed in the dark exhibited greater color changes than equivalent pigmented specimens. Pigments may exert a stabilizing effect on the elastomers’ color; 8 however, the silicone specimens were processed in stone molds, and silicones are not completely polymerized in stone molds 27,28 …”

Section: Discussionmentioning

confidence: 99%

Effect of Extraoral Aging Conditions on Color Stability of Maxillofacial Silicone Elastomer

Hatamleh

Watts

2010

Journal of Prosthodontics

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There is inherent color instability of nonpigmented silicone elastomer, which adds to the overall color change of silicone prostheses. Storing silicone elastomer in simulated sebum under light aging induced the greatest color changes. Overall, the color stability of TechSil S25 maxillofacial heat-temperature-vulcanizing (HTV) silicone elastomer was unacceptable (ΔE > 3.0, range from 3.48 to 9.89 for pigmented and 3.89 to 10.78 for nonpigmented) when subjected to six of the seven extraoral aging conditionings used in this study. Inherent color instability of nonpigmented facial silicone elastomers primarily contributes to the color degradation of extraoral facial prostheses. Sebaceous skin secretions along with daylight radiation cause the greatest perceivable color change to the silicone and pigment used in this study.

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Properties of silicone maxillofacial elastomer processed in stone and metal

Cited by 16 publications

References 3 publications

Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Influence of ozone and paracetic acid disinfection on adhesion of resilient liners to acrylic resin

Effects of the Addition of Titanium Dioxide and Silaned Silica Nanoparticles on the Mechanical Properties of Maxillofacial Silicones

Effect of Extraoral Aging Conditions on Color Stability of Maxillofacial Silicone Elastomer

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