Final answer:
A mandibular alginate impression usually requires 3 scoops of powder and 3 measures of water. The exact ratio can vary, so it's essential to consult the manufacturer's instructions.
Step-by-step explanation:
A mandibular alginate impression typically requires 3 scoops of powder and 3 measures of water. The exact ratio can vary depending on the manufacturer's instructions, but a common ratio for a full mandibular impression is to use 3 scoops of alginate powder to 3 measures of water, ensuring that the consistency is right for capturing a detailed and accurate impression. It's important to closely follow the specific instructions provided with the alginate product being used.