Study of the interocclusal distortion in impressions taken with different typesof closed-mouth trays and two types of impression materials

ABSTRACT

The aim of this study was to compare different types of impression trays for the closed-mouth impression technique,using two different types of impression material. For this study, five different types of impression trayswere used with two different types of impression materials, one of addition silicone and the other of polyether. Wedesigned a model used for taking the impressions and for measuring interocclusal distortion. The results obtainedshow that the impression trays COE (GC (R) GC America INC. Alsip) and Premier (Premier (R), Premier DentalProducts Co. Canada) show a lesser degree of interocclusal distortion when taking closed-mouth impressions. Interms of impression materials, the polyether was the one that produced the best results. From a clinical point ofview, our study shows that the use of these types of trays is absolutely recommendable when used according tothe clinical indications for which they have been designed; that said, we must not fail to consider that selecting theproper type of tray is also important (AU)

RESUMEN

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