Rubber Base Impression Material Slideshare

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Rubber base impression material slideshare.

Impression a dental impression is a negative record of the tissues of the mouth. New auto devices and. Earlier materials base and catalyst tubes present materials cartridges. Read before the academy of denture prosthetics columbus ohio may 3 1957.

It is used to register or reproduce the form and relationship of teeth and surrounding tissues. Elastic impression materials 1. Classification of elastomeric impression materials. The introduction of rubber based polysulfide impression materials was followed by silicone based materials both of which are still in use.

Direct inhibition direct contact with latex gloves impression are made with rubber dam in place mechanism of inhibition element sulphur react with chloroplatinic acid catalyst present in pvs impression material. See my price quick order type item number or scan barcode item number required please enter a patterson item number in the correct format. 735 north water st. A device that is used to carry confine and control impression material while.

The elastic properties of these elastomeric impression materials improve with an increase in curing time in the mouth. These are basically synthetic rubber based materials which were initially called as rubber impression materials but currently they are known as non aqueous elastomeric impression materials. An impression with a sufficiently high elastic limit should not sustain permanent deformation. Impression materials elastic chemical reactions irreversible alginate elastomers polysulphides polyethers condensation silicon addition silicon temperature change reversible agar hydrocolloid chemical reactions irreversible plaster of paris zno eugenol temperature change reversible impression compound.

Distortion due to poor dimensional stability. Inaccurate portions can be remade without having to remakethe entire impression. An impression material sustains some deformation as it is removed from the mouth but it must rebound to its pre removal dimensions. Accuracy can be improved by flaming surface material disadvantages.

Following these elastic polyether impression materials were introduced followed in recent times by polyvinylsiloxane impression materials. Dean marquette university school of dentistry. Omniflex rubber base impression material bulk package fast set gc america inc. Till now the elastomeric impression materials are divided into 3 types based on the material used.

Material can be reused several times. Impression materials a brief introduction dr saransh malot 2. Compress soft tissue while making impression. Difficult to remove if there are undercuts.

123 1234 123 1234 1231234 071231234 07 123 1234. Addition silicone was introduced as a dental impression material 1988. Polyether impression material developed in germany 1970s.