For Medical Professionals
This shop exclusively provides special items and offers for doctors, nurses and healthcare professionals, who apply these products for their medical practices.
Impressions are taken in the dental surgery to manufacture dentures, orthodontic devices, occlusal splints or even diagnostic study models.
Various tools are needed to take an impression of the jaw. An important component is the impression tray. These are available as plastic disposable articles or as reusable trays made from durable metal, perforated for better retention of the impression material, and in special shapes for the upper and lower jaws. Upper-jaw impression trays are recreated from the ridge; the palatal area and the vestibule are anatomically preformed. When taking an impression of the upper jaw, care must be taken not to fill the impression tray with too much material, especially in the throat area at the back. When the generally thin material goes beyond the anterior vibrating line - from the hard palate to the soft bridge to the uvula - many patients suffer from a strong gag reflex. For the lower jaw, impression trays are also recreated from the ridge and the vestibule is preformed, thus sparing the tongue area. In addition, partial trays are required for the left and right halves of the jaw and the front teeth area, for instance to manufacture provisional crowns.
When precision impression materials are used, for instance for preparations, impression syringes are frequently employed. These are filled with thin impression material and, thanks to the fine tip, the impression material can be directly inserted into sulci or around the tooth stump. These handy impression syringes are easy to fill; the flexible tips can be shortened individually, thus changing the size of the discharge opening. A further tool in impressions is retraction threads. These are placed in the sulci around the tooth stump, thus gently displacing the gum. The retraction threads are removed before the impression with correction material; the impression shows the edges of the preparation.A variety of materials are required for impressions. Alginates set quickly, are physiologically safe and patients generally find they have a pleasant taste. They are most suitable for manufacturers of counter-models and diagnostic study models. For precision models, on the other hand, materials with greater sharpness and detailed accuracy, such as silicone, are used. These are available in a range of fluidities and viscosities, from thin to kneadable. We distinguish between unilateral impressions (the material is filled and formed in the impression tray) and double mix impressions (the firmer material is poured into the tray and the thin one is immediately poured on top and both together form the impression).
Find a variety of materials and accessories for impressions at attractive prices on Praxisdienst-DENTAL.