HOSA Dental Terminology Practice

What does the term elastometric refer to in dental materials?

1. A material that is easily molded

2. A material having properties similar to rubber

3. A rigid impression material

4. A material that hardens permanently

The correct answer is: A material having properties similar to rubber

The term "elastomeric" in dental materials refers to substances that possess elastic properties, akin to rubber. This characteristic allows elastomeric materials to stretch and then return to their original shape, which is particularly advantageous in dental applications like impression materials. Such materials can accurately capture the details of oral tissue while also allowing for easy removal from the mouth without distortion. This property makes elastomeric materials ideal for creating positive molds of teeth and gums, since they can accommodate undercuts and other irregularities without tearing. In contrast, materials that are rigid or harden permanently, do not share the same flexibility and adaptability, which is why they are not classified as elastomeric. Thus, the defining feature of elastomeric in the context of dental materials is their rubber-like flexibility and ability to retain shape after deformation, making option B the correct choice.