Materials Guide to correct material selection

Bad impressions cause depressions The process of creating a good quality dental restoration that fits and works well, starts with ensuring that you take the most accurate impression possible. If your impression doesn't capture the precise details of the treatment area, the laboratory will not be able to produce the prosthesis correctly and you will probably find it very difficult, if not impossible to fit. The result is extra work for you, often for which you cannot charge, disagreement perhaps with your laboratory and almost certainly inconvenience for your patient who may also become upset...

impression materials 'two materials, two steps' technique The Also known as a putty wash or a correction impression, this method uses two different types of material in a two steps procedure. The dentist first makes a pre-impression by inserting the tray with a heavy-bodied putty material into the mouth. After the material sets the dentist removes all undercuts and then cuts escape channels for the excess wash material. This light-bodied correction material is applied in the second step. Some dentists use a plastic foil to create extra space so preventing the need for cutting. The GC solution...

'two materials, one step' technique The Also known as the double impression technique, this procedure is faster than the 'two materials, two steps technique', but it is more difficult to achieve a precise impression. To obtain the best results it is crucial that the viscosity’s of the two materials are as close as possible to each other. Problems If a too light bodied wash material is used in combination with a too viscous tray material, such as a putty, it will be pushed away, resulting in a lack of detail reproduction in the cervical area of the impression and possibly distortions over the...

'one material, one step' technique impression materials Also referred to as the monophase technique this method involves applying into the impression tray an impression material that gives sufficient pressure build-up during the impression taking, whilst at the same time the dentist applies the same material by means of a syringe to the treatment area of the patient's mouth. The base material in the impression tray is then set in the mouth while pressure is applied to ensure that an accurate impression is achieved. This technique requires a material that can provide both a high degree of reproduction...

GC Exafast NDS and GC Exafast Putty A-Silicone Impression Materials in Cartridges Fast setting A-Silicone Impression Materials Examix NDS represents a family of thixotropic and hydrophilic impression materials, supplied in cartridges, which may be used for all popular impression techniques. Being thixotropic, Examix NDS is highly fluid under pressure and remains stable once in position. Excellent hydrophilic properties provide extra wettability and detailed reproduction. Snap-set properties, together with extended working time, make Examix NDS very easy to use. But this is not all; the hydrogen...

impression materials A-Silicone Impression Material A-Silicone Impression Material in Foil Pouches Exaflex represents a family of handmixable A-silicone impression materials with exceptional hydrophilic properties ideal for use with all the popular impression techniques. Advantages Exaflex is easy to mix and extremely stable. It also has excellent affinity with modelling stone materials making it an ideal partner for dental impressions. The high level of elasticity and optimal thixotropic flow properties of Exaflex ensure that dental impressions are made to the highest level of precision. Exajet...

Impressions Materials Working time Setting time Normal Fast Injection Regular Putty All working and setting times measured at 23°C All other physical properties according to ISO 4823:1993 Packages GC Examix NDS and GC Exafast NDS Refill: 2 cartridges, 48 ml each 6 mixing tips II, size S, L or LL depending on the viscosity GC Exajet Normal & Fast Intro pack.: foil pouches base 300 ml and catalyst 62 ml Cartridge 10 Dynamic mixing tips GC Exaflex and GC Exafast Putty 1-1 Pack.: base and catalyst , 500 g each 5-5 Pack. 5 x base and catalyst , 500 g each Refill: 2 foil pouches each of base 300 ml...