When Polishing, to Prevent Any Enamel from Being Removed During

question 5

Multiple Choice

When polishing, to prevent any enamel from being removed during the procedure, ____________.

• A) select a fine grit abrasive
• B) use a cup instead of a brush in the prophy angle
• C) use slow rpm
• D) small amounts of enamel are always removed during a polish

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Definitions:

Actual Direct Labour Rate

The actual cost per hour paid to workers for their labor.

Standard Labour Rate

The predetermined cost per hour of labor, used in budgeting and costing to estimate the labor costs associated with a product.

Labour Efficiency Variance

Labour efficiency variance is the difference between the actual labor hours used and the standard labor hours expected for the output level achieved, reflecting labor efficiency.

Variable Overhead Efficiency Variance

The difference between the actual variable overhead incurred and the expected (or budgeted) variable overhead based on efficient usage of resources.