Lamthong, Wittaya, Kamon Yodyadthai, and Pisol Senawongse. “Output intensity of LED light curing units over a 4-year period of clinical use”. Mahidol Dental Journal 39, no. 2 (August 2, 2019): 153–163. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/204837.