**Core Concept**
Electric pulp tests are a diagnostic tool used in dentistry to assess the vitality of dental pulp. They involve applying an electric current to the tooth to determine if the pulp is alive or dead. This test is essential for identifying potential problems and guiding treatment decisions.

**Why the Correct Answer is Right**
The correct answer is related to the contraindications of electric pulp testing. Patients with pacemakers or other implantable cardioverter-defibrillators (ICDs) should not undergo electric pulp testing, as the electrical current could interfere with the device's functioning and potentially cause life-threatening arrhythmias. The test should also be avoided in patients with a history of seizures, as the electrical stimulation may trigger a seizure.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not a contraindication for electric pulp testing. In fact, patients with a history of dental work, such as fillings or crowns, may be suitable candidates for the test.
**Option B:** This option is not a contraindication for electric pulp testing. Patients with a history of dental trauma may require electric pulp testing to assess the vitality of the pulp.
**Option C:** This option is not a contraindication for electric pulp testing. Patients with a history of dental caries may require electric pulp testing to assess the vitality of the pulp.

**Clinical Pearl / High-Yield Fact**
When performing electric pulp testing, it's essential to use a low-intensity current and to monitor the patient's response closely. If the patient experiences any discomfort or pain during the test, the procedure should be stopped immediately.

**Correct Answer:** D. Patients with pacemakers or other implantable cardioverter-defibrillators (ICDs).