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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From which surface are wedges typically placed in a dental procedure?

Facial/buccal surface
Lingual surface
Occlusal surface
Mesial surface

The correct answer is: Lingual surface

Wedges are primarily used in dental procedures to help achieve proper adaptation of restorative materials, especially composite resins, to the cavity preparation. They are typically placed from the lingual surface of the tooth. This is because positioning the wedge from the lingual side allows for better stabilization and creates the necessary separation of the teeth, which is essential for creating a tight seal between the tooth and the restorative material. Additionally, placing the wedge from this surface helps to minimize the risk of damaging the adjacent teeth and ensures that the restoration is formed correctly without excess material on the facial/buccal side. Using a wedge from the lingual surface is particularly advantageous in posterior teeth, where access can be more confined, and proper adaptation of the restoration is crucial for both aesthetics and function. Such placement also facilitates easier removal of excess material, leading to a smoother finish and better patient outcomes.