พิงคำขา พ., & ศรีสุวรรณ ธ. (2025). Electronic apex locator: Principles, Evolution, Comparative analysis, and clinical applications in Endodontics. Thai Endodontic Journal, 4(1), 1–20. retrieved from https://he03.tci-thaijo.org/index.php/thaiendod/article/view/4095