National Dental Examining Board of Canada (NDEB) Practice Exam

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The best way to protect the abutment of a Class I RPD from negative effects of additional load applied to them is by:

  1. Applying dental adhesives

  2. Regular cleanings

  3. Using a harder material for construction

  4. Regular relining of the distal extension

The correct answer is: Regular relining of the distal extension

Regular relining of the distal extension is the best way to protect the abutment of a Class I RPD because it helps distribute the load evenly and prevent any excess stress on the abutment, which can lead to damage or failure. A Applying dental adhesives is not the best solution because it does not help distribute the load and can potentially weaken the abutment if not used properly. B: While regular cleanings are important for maintaining overall oral health, they do not specifically protect the abutment from additional load. C: Using a harder material for construction may provide more strength, but it does not address the underlying issue of excess load on the abutment. Additionally, using a harder material may also be detrimental to the natural teeth and oral tissues. Therefore, regular relining of the distal extension is the most appropriate option for protecting

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