Australian Dental Council (ADC) Practice Test

The option that suggests making several small mixes, sequentially triturated, is considered the best choice for achieving better homogeneity in an amalgam restoration. This approach allows each mix to be finely processed, ensuring that the amalgam particles are evenly distributed throughout the mercury.

When smaller batches are triturated, it becomes easier to control the mixing process, leading to a more uniform mixture. Each small batch can be monitored for consistency, and if any adjustments are needed, it can be done without affecting a larger volume. Furthermore, smaller mixes minimize the risk of overmixing or undermixing, both of which can compromise the quality and performance of the final restoration.

In contrast, preparing a large mix may result in difficulties ensuring uniformity, as it can be challenging to maintain consistent mixing throughout without incorporating air bubbles or creating dry spots. A basic mix with additional mercury may lead to an unbalanced ratio, negatively impacting the physical properties of the amalgam and potentially compromising the restoration's strength and durability. Mixing amalgam with varying powder ratios can also complicate the homogeneity, as it introduces inconsistencies that could weaken the restoration. Therefore, sequentially triturating several small mixes is the optimal technique for achieving better homogeneity in the restoration material.