National Board Dental Hygiene Examination (NBDHE) Dental Hygienist Practice Test

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Which of the following is a characteristic of an overdenture?

  1. No natural teeth remain

  2. Natural teeth remain

  3. Used with an overbite

  4. Covers the denture

The correct answer is: Natural teeth remain

An overdenture is specifically designed to fit over one or more remaining natural teeth or dental implants. This characteristic allows the overdenture to benefit from the support and proprioception provided by the natural teeth or implants. By incorporating natural teeth, the overdenture offers improved stability and prevents the shrinkage of the surrounding bone that can occur with complete dentures. Choosing an option that states no natural teeth remain does not apply to overdentures, as their primary function is to utilize the existing teeth for support. Similarly, while an overdenture can potentially be used in cases with an overbite, this feature is not a defining characteristic. Finally, the statement about covering the denture does not accurately depict what an overdenture is; rather, it is a type of denture that integrates with the remaining natural anatomy. Thus, the presence of natural teeth is a fundamental aspect of what distinguishes an overdenture from other types of dentures.

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