พิงคำขา พ, ศรีสุวรรณ ธ. Electronic apex locator: Principles, Evolution, Comparative analysis, and clinical applications in Endodontics. Thai Endod J [internet]. 2025 Jun. 25 [cited 2026 Sep. 10];4(1):1-20. available from: https://he03.tci-thaijo.org/index.php/thaiendod/article/view/4095