Prepare for the HOSA Dental Terminology Exam. Study with flashcards and multiple-choice questions, each supplemented with hints and explanations. Get equipped for your test with confidence!

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Which endodontic instruments are designed to clean and enlarge a root canal?

  1. Files

  2. Drills

  3. Reamers

  4. Scalers

The correct answer is: Reamers

Reamers are specifically designed for cleaning and enlarging root canals in endodontic procedures. They have a tapered, spiral design that allows for effective removal of dentin and debris from the walls of the canal while maintaining the integrity of the canal shape. The unique cutting edges of reamers enable the dentist to efficiently enlarge the canal space to facilitate proper cleaning and disinfection, preparing it for eventual filling. Files are also used in endodontics for cleaning and shaping canals, but they are typically meant for more delicate work or finishing touches after the reaming process. Drills are generally meant for creating initial access to the tooth and typically do not perform the same function as reamers in enlarging and cleaning root canals. Scalers, on the other hand, are primarily used for removing plaque and calculus from the tooth surfaces and are not suited for endodontic canal treatment.