National Dental Assisting Examining Board (NDAEB) Practice Exam

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Prepare for the National Dental Assisting Exam with comprehensive quiz questions, including multiple choice and detailed explanations. Equip yourself for success!

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Where are Class II restorations commonly found?

Anteriors
Maxillary teeth
Posterior teeth
Cuspids

The correct answer is: Posterior teeth

Class II restorations are specifically designed for cavities that occur on the proximal surfaces of posterior teeth, which include molars and premolars. These teeth are typically subjected to greater forces and are more prone to caries due to their anatomy, which includes pits and grooves that can trap food and bacteria. The restoration aims to restore the structural integrity and function of the tooth while also preventing further decay. Since Class II cavities are located between teeth and often require a more extensive restoration due to their location in the back of the mouth, posterior teeth are indeed the most common site for these types of restorations. This understanding underscores why the other choices do not align with the characteristics of Class II restorations. Anteriors are mostly associated with Class I and Class III restorations, maxillary teeth as a category does not specify the class of restoration applicable, and cuspids (canines) primarily involve Class I because their function and morphology do not typically lead to Class II cavities like the molars and premolars do.