Chowdhary, R., N. K. Sonnahalli, and J. N. Gala. “Implant Abutment Screw Fracture and Techniques of Retrieval: A Literature Review Based on a Novel Abutment Screw Fracture Classification”. Journal of Osseointegration, vol. 15, no. 1, Jan. 2023, pp. 32-39, doi:10.23805/JO.2023.15.01.06.