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CDCA Dental Hygiene (ADEX) - Blogs Sample Questions

What should be done if too much solvent is added to prophy paste?

Correct Answer:
use 2x2 gauze to remove excess liquid.

when using prophy paste during dental cleaning procedures, it's important to maintain the correct consistency of the paste to ensure effective cleaning and patient comfort. prophy paste is used to polish teeth and remove plaque and stains. however, if too much solvent, such as water, is inadvertently added to the prophy paste, it can become too diluted. this dilution can prevent the paste from adhering properly to the teeth, which is essential for effective polishing. additionally, a runnier paste is more likely to splatter, which can be uncomfortable for the patient and create a mess during the procedure.

the correct way to address an issue where too much solvent has been added to prophy paste is to use a 2x2 inch gauze to remove the excess liquid. gauze is effective because it is highly absorbent and can easily soak up unwanted solvent, restoring the paste to a thicker consistency that is more suitable for dental procedures. to do this, simply place the gauze into the container of prophy paste and gently press to absorb the excess liquid. remove the gauze once it has absorbed sufficient solvent, and check the consistency of the paste. repeat if necessary until the desired consistency is achieved.

other methods, such as shaking off the excess liquid or adding more abrasive materials to the paste, are less effective and can further compromise the quality and effectiveness of the prophy paste. shaking off the liquid may not sufficiently reduce the amount of solvent, and adding more abrasive can alter the intended formulation of the paste, potentially making it too harsh for use on enamel.

thus, using a 2x2 inch gauze to remove excess solvent is the recommended and most efficient method to correct the consistency of prophy paste. this approach ensures that the paste remains effective for cleaning and polishing teeth, while also minimizing discomfort and mess during dental cleaning procedures.

Which of the following class of abrasives are the finest?

Correct Answer:

in the context of abrasive agents used for dental procedures, the classification of abrasives based on their coarseness and intended use is crucial. abrasives are used in various dental applications such as cutting, cleaning, polishing, and finishing, each requiring a different level of abrasiveness.

among these classes, the abrasives used for cleaning are considered the finest. this fine quality is essential because cleaning abrasives are designed to be gentle enough for intraoral use, specifically for prolonged contact with tooth surfaces. their primary purpose is to remove plaque and superficial stains without causing harm to the enamel or dentin.

the reason cleaning abrasives need to be finer and less coarse compared to those used for cutting or polishing is rooted in their functional requirement to preserve tooth structure. when cleaning teeth, the goal is to minimize any abrasive interaction that could potentially erode or scratch the enamel. enamel, being the outermost layer of the tooth, is critical for protecting against decay and sensitivity. therefore, maintaining its integrity is paramount.

in contrast, abrasives used for cutting are significantly coarser, as their purpose is to remove larger portions of tooth material or restorative materials during procedures like cavity preparation or adjustments in crown fittings. similarly, polishing abrasives are somewhat finer than cutting abrasives but still more abrasive than cleaning agents because they need to smooth out surfaces after coarse adjustments have been made.

thus, when comparing these classes of abrasives, those used for cleaning are undoubtedly the finest. they strike a balance between efficacy in stain removal and safety in preserving tooth enamel, making them the least abrasive among the options listed and ideal for regular dental maintenance.