For centuries, impression materials has been used to record the oral situation in a precise manner. First using gypsum followed by reversible/irreversible hydrocolloids and today with silicone and polyether materials.

The use of the irreversible hydrocolloid alginate impression material is very wide spread and used for many different indications. Due to the hydrophilic character, the ease of use and economical aspects, this type of impression material is the first choice impression material. However, the main drawback was the stability and possible deviations as a result of absorption or evaporation of water. Another threat for the alginate impression materials is the fast growing digitalisation. Traditional methods are adapted or completely disappear. Intra oral scanners are introduced to obtain digital models from the oral situation connected to ingenious scanning & milling devices.

Is there still a need for alginate impression materials? Definitely yes!!!

Today, Cavex Cream Alginate contains new filler types obtaining a detail reproduction of five micron (5 µm) which is comparable or even better compared to the silicone impression materials. This is a very strong argument for the more critical patients and dentist with a growing environmental awareness. The new alginate impression materials are still based on natural ingredients (seaweed) making them very biocompatible and environmental friendly, compared to polyether and silicone. The dental specialist can use the alginate in the traditional way of impression making, ensuring that the oral situation is reproduced very precisely. Besides, the Cavex Cream Alginate is adapted in such a way that is scanable with most standard scanning devices.

The use of titanium dioxide

Researchers made use of titanium dioxide which is known for it’s very high reflection index. This was already proven in several other industries (i.e. paints). The impression can be scanned immediately or within 48 hours when the impression is kept in 100% humidity. The results are astonishingly accurate and are already implemented in many dental offices. Especially, the orthodontic specialist embraces the scanable features as they have the obligation to keep track and archive more the progress of the orthodontic treatment. The enormous amount of gypsum models are now replaced by a few gigabytes on the computer.

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Cavex Holland BV
Manager Technical Services
Richard Woortman

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