K, P. K., D. P. A. . S, T. T. L, and C. M. “Metal-Free Alternative ‘Revolutionary PEKK’: An Emerging Material for Removable and Fixed Prosthesis Usage in Dentistry: A Critical Review”. Journal of Advanced Zoology, vol. 44, no. S5, Oct. 2023, pp. 1377-82, doi:10.17762/jaz.v44iS-5.1272.