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[daun'ʌndə]
существительное
разговорное выражение
Австралия
Новая Зеландия
в грам. знач. нареч.
в Австралию
в Новую Зеландию
[əuvər'ʌndə]
синоним
A dental impression is a negative imprint of hard and soft tissues in the mouth from which a positive reproduction, such as a cast or model, can be formed. It is made by placing an appropriate material in a dental impression tray which is designed to roughly fit over the dental arches. The impression material is liquid or semi-solid when first mixed and placed in the mouth. It then sets to become an elastic solid, which usually takes a few minutes depending upon the material. This leaves an imprint of a person's dentition and surrounding structures of the oral cavity.