Li, Xuesheng, Shuai Liu, Yishi Tang, Yunshan Zhao, and Yingbin Su. “Influence of Polyether Ether Ketone Coping Crown on the Adaptation of Implant Abutment”. Journal of the Pakistan Medical Association 74, no. 2 (January 20, 2024): 282–286. Accessed June 12, 2026. https://jpma.org.pk/index.php/public_html/article/view/9043.