California Registered Dental Assistant (RDA) Written Practice Exam

What technique does the dentist use to modify the borders of an impression?

1. Border Molding

2. Edge Fitting

3. Trimming

4. Border Framing

The correct answer is: Border Molding

The technique used by a dentist to modify the borders of an impression is called "border molding". This technique involves using dental materials, such as compound or wax, to shape and extend the borders of an impression in order to capture the full extent of the oral tissues. It is important for creating a precise and accurate impression that will be used for creating dental prosthetics, such as dentures or crowns. Option B, "edge fitting", is not the correct answer because it refers to the technique of ensuring that the edges of the impression are properly sealed and smooth. Option C, "trimming", is not the correct answer because it refers to the process of removing excess material from the impression after it has been taken, in order to create a clean and accurate mold. Option D, "border framing", is not the correct answer because it is not a commonly used term in dentistry and does not