Final answer:
A granular alginate impression mix may be caused by inadequate mixing, excessive setting time, or an inaccurate water-to-powder ratio.
Step-by-step explanation:
A granular alginate impression mix may be caused by a few factors:
- Inadequate mixing of the alginate powder and water, resulting in clumps and granules in the mixture.
- Excessive setting time, which can cause the alginate to partially set before it is poured into the dental impression tray, leading to a granular texture.
- Inaccurate water-to-powder ratio, with too much water or too little powder, can result in a granular mix.
To avoid a granular alginate impression mix, it is important to follow the manufacturer's instructions, use proper mixing techniques, and ensure the correct water-to-powder ratio.