Luay Thanoon, S., Mohamad, M.S.F. and Younis, L.T. 2023. Lost in Space - Caldwell Luc Antrostomy for Retrieving Displaced Root into Maxillary Sinus: A Case Report. Compendium of Oral Science. 10, 2 (Sep. 2023), 102–107. DOI:https://doi.org/10.24191/cos.v10i2.23648.