This necessitates dental clinicians to make a careful assessment of the tissues to be recorded in the impressions, type of impression trays
, impression materials, and techniques to be used.
There was greater understanding of properties of various materials used in complete denture impression like plaster, modeling compound and materials used for impression trays
. Properties of zinc oxide Eugenol impression paste and its reaction with tissues was better understood.
(3.) Christensen G.A new simple double arch impression tray
. Clin Res Assoc News 5:4, 1981.
* Simple measures like avoid over loading of the impression tray
, use of fast setting materials, ensuring sufficient aspiration, treatment in upright position, frequent cessation of treatment etc can be used.
Orienting the impression tray
: A jig was fabricated and attached to the jaw table for the proper positioning of the tray.
The impression tray
is filled automatically, directly from the mixing unit, making it much easier to fill the tray and less likely that air bubbles would become trapped in the material in the tray (Photo 3).
The effects of disposable and custom-made impression trays
on the accuracy of impressions.
TABLE 2: IMPRESSION TRAY
USED FOR TAKING IMPRESSION
Sectional custom impression tray
technique has been documented more than 40 years ago but is mostly reserved for immediate denture cases in which both the impression trays
are custom made.1
Lastly what is most exciting for most of the patients is the comfort of knowing that the dentist will not be taking any impressions using the dreaded large, gooey impression trays
. Not only are the digital scanners much more comfortable but also gives the dentist the most accurate impression of the tooth.
AvaDent transfers patient stone models, impression trays
, and other records into their digital computerss system to create the perfect, personalized AvaDent[R] digital denture every time.
Two impression trays
were fabricated using cold cure acrylic resin (DPI-RR Cold Cure, Dental Products India; Mumbai, India) for the CIT (Figure 1(a)) and TLIT (Figure 1(b)).