**Core Concept**
Trituration in dentistry refers to the process of mixing mercury with alloy powder in a specific ratio to form a workable dental amalgam. This process involves the mechanical breakdown of the alloy particles to create a uniform mixture with the mercury, allowing for proper condensation and setting of the amalgam.

**Why the Correct Answer is Right**
The correct answer is B because the primary objective of trituration is not to maximize the amount of gamma-1 or gamma-2 matrix crystals. Instead, the goal is to ensure an optimal ratio of mercury to alloy powder, which is crucial for achieving the desired mechanical properties of the amalgam. The matrix crystals are formed during the condensation and setting process, and their proportion is influenced by factors such as the type of alloy used, the mixing ratio, and the condensation technique. The correct ratio of mercury to alloy powder is essential to prevent excessive mercury from being incorporated into the amalgam, which can lead to weak and brittle restorations.

**Why Each Wrong Option is Incorrect**
**Option A:** Removing oxides from powder particle surfaces is indeed a part of the trituration process, as oxides can interfere with the amalgamation reaction and affect the properties of the final product. This option is incorrect because it is not the primary objective of trituration.
**Option C:** While pulverizing pellets into smaller particles is an initial step in the trituration process, it is not the primary objective. The goal is to create a uniform mixture with mercury, not simply to break down the pellets.
**Option D:** Achieving a workable mass of amalgam in minimum time is a desirable outcome of the trituration process, but it is not the primary objective. The correct answer is B, which highlights the importance of achieving the optimal mixing ratio.

**Clinical Pearl / High-Yield Fact**
A key aspect of trituration is to ensure an optimal mixing ratio of mercury to alloy powder, typically around 50-60% mercury and 40-50% alloy powder. This ratio is critical to prevent the formation of weak and brittle restorations.

**✓ Correct Answer: B. Keep the amount of gamma-1 or gamma-2 matrix crystals to maximum**