Evaluation of detail reproduction for three die materials by using scanning electron microscopy and two-dimensional profilometry

Derrien, G; Menn, G. Le; Jendresen, Malcolm D.; Malone, William F.P.; Taylor, Thomas D.

doi:10.1016/s0022-3913(05)80221-5

Cited by 40 publications

(38 citation statements)

References 15 publications

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“…There is no scientific evidence to indicate that polyvinyl siloxanes advertised as 'hydrophilic' can be syringed into a wet sulcus for an accurate impression. 2,9,12,23 This has been confirmed by Takahashi and Finger, 24 who demonstrated that under a simulated clinically dry field, both the hydrophilic and original f o rm u l ations of polyvinyl siloxane wet tooth stru c t u r e with equal results. It has also been shown that the newer hydrophilic materials perform no better than the original formulations of polyvinyl siloxane in wettability for pouring dies, if a compatible, extri n s i c, spray-on surfactant is applied before pouring.…”

Section: H the Hydrophilic Questionmentioning

confidence: 77%

“…Very low viscosity materials can reproduce lines 1-2 µm wide. 5,12,13 It should be noted that the literature does not tend to support the use of putty and wash impression techniques for greatest accuracy in impressions. Wassell and Ibbetson 14 reported that heavy body and wash impressions were more accurate than putty a n d wash impressions.…”

Section: A Viscositymentioning

confidence: 99%

“…This makes polyvinyl siloxanes compatible with gypsum, epoxy resin, and polyurethane resin materials. 9,12,38 Gypsum stones cannot reproduce detail much smaller than 20 µm because their crystal size ranges from 15 to 25 µm. Epoxy and polyurethane resins can reproduce detail down to 1 to 2 µm making them highly compatible with the detail capture possible with polyvinyl siloxane impressions.…”

Section: Compatibility With Die Materialsmentioning

confidence: 99%

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Polyvinyl siloxane impression materials: An update on clinical use

Mandikos

1998

Australian Dental Journal

160

115

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Polyvinyl siloxane impression materials have applications in a variety of indirect procedures in p r o s t h o d o n t i c s and restorative dentistry. Favourable handling properties, good patient acceptance and excellent physical properties have resulted in their popularity in today's practice. In this review, the chemistry and important physical properties of polyvinyl siloxanes are summarized, and recent clinical questions of improved hydrophilics, tray adhesives, disinfection, and glove-induced polymerization inhibition are addressed.

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Section: H the Hydrophilic Questionmentioning

confidence: 77%

Section: A Viscositymentioning

confidence: 99%

Section: Compatibility With Die Materialsmentioning

confidence: 99%

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Polyvinyl siloxane impression materials: An update on clinical use

Mandikos

1998

Australian Dental Journal

160

115

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“…PVS possess excellent dimensional stability, and thus it can be poured within 1-2 weeks after removal from the mouth 11,20) . The immediate linear accuracy was reported to be influenced by the sulcular width 21) .…”

Section: Introductionmentioning

confidence: 99%

Dimensional stability of polyvinyl siloxane impression material reproducing the sulcular area

et al. 2013

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The dimensional stability of a thin intra sulcular impression material reproducing the preparation finish line was evaluated. Impressions were taken of a stainless-steel master model of a simulated abutment with a 'gingival sulcus' using Express regular, Express fast and Aquasil. The putty-wash two-step technique was applied with spacer thicknesses of 0.5, 1 and 1.5 mm. Mid mesiodistal and bucco-lingual measurements were taken directly from the sulcular impression material after 0.5, 2, 24, 48 and 72 h via a Toolmaker's microscope. The discrepancies between the measurements of the impression material and the master model were calculated. The discrepancies changed significantly over time (p<0.001). The use of a 0.5 mm spacer resulted in a negative deviation from the model (2-46 µm), minimally after 2 h. The use of 1 and 1.5 mm spacers showed a positive deviation from the model (21-52 µm) and both are equally recommended. Investment can be postponed until 72 h.

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“…Autores 50,5,28,25,54,122,124,2,8,4,125,14,106,127,11,9,10,107,78,27,33,13,49,80,62,128,29,36,77,57,70,110 recomendam as resinas epóxicas como material adequado para obtenção de …”

Section: Obtenção Das Réplicas Positivasunclassified

Avaliação da técnica de réplica para análise in vitro e in vivo das alterações da superfície da dentina hiperestésica e tratada com oxalato de potássio.

Martineli¹

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Evaluation of detail reproduction for three die materials by using scanning electron microscopy and two-dimensional profilometry

Cited by 40 publications

References 15 publications

Polyvinyl siloxane impression materials: An update on clinical use

Polyvinyl siloxane impression materials: An update on clinical use

Dimensional stability of polyvinyl siloxane impression material reproducing the sulcular area

Avaliação da técnica de réplica para análise in vitro e in vivo das alterações da superfície da dentina hiperestésica e tratada com oxalato de potássio.

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