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What is the function of an electronic pulp tester?

  1. A tool that supplies heat for vitality testing

  2. A battery operated tool that creates an electrical stimulus to the tooth

  3. An instrument used to scrape and widen the walls of the canal

  4. An attachment for high-speed handpieces

The correct answer is: A battery operated tool that creates an electrical stimulus to the tooth

The electronic pulp tester serves to assess the vitality of a tooth by creating an electrical stimulus. When applied to a tooth, it generates a small electric current that can provoke a response from the pulp tissue. This response helps determine whether the nerve inside the tooth is alive (vital) or dead (non-vital). The goal is to identify any issues with the tooth's health, particularly in situations where a patient may have sensitivity or pain. This method is non-invasive and quick, making it an useful diagnostic tool in dental practice. The other choices describe tools that serve different purposes in dentistry. While the first choice discusses a tool that employs heat for vitality testing, it's notable that heat testing is a separate diagnostic technique and not the main function of the electronic pulp tester. The third choice refers to an instrument for canal preparation, which is a completely different process used during root canal treatments. The last choice mentions an attachment that enhances high-speed handpieces, which relates to restorative procedures rather than vitality testing.