Tengrungsun, Tasanee, Pachinee Kosakul, Onrudee Suratanasurang, and Theeralaksna Suddhasthir. “A Study of Dentinal Microcracks in Root Canal Wall After Root Canal Preparation by Hand File and Three Different Engine-Driven File Systems”. Mahidol Dental Journal 40, no. 2 (August 26, 2020): 77–86. Accessed May 5, 2024. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/234557.