Modern Electronic Apex Locators are consistently more accurate than radiographs, reaching 90–98% accuracy within ±1 mm of the apical foramen.
- Real-Time Feedback: Unlike X-rays, they provide immediate visual and audible cues as the file progresses, reducing the risk of over-instrumentation.
- Safety: They reduce patient exposure to ionising radiation by minimising the number of working length radiographs needed.
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