Journal of implantology and applied sciences ISSN:2765-7833(Print) 2765-7841(Online) 대한구강악안면임플란트학회지

The retaining methods of implant prostheses can be divided into screw-retained and cement-retained types. Screw-retained prosthesis have many advantages, such as retrievability, better retention for reduced interocclusal spaces and easyrepair, while their disadvantages include the possibility of screw loosening, relatively high cost, technique sensitivity anddifficulty of achieving passive fit. In comparison, cement-retained prosthesis provides good esthetic, passivity and occlusalbenefit because no screw holes are involved; however, they are difficult to retrieve. To combine the advantages of both typesof prosthesis, screw and cement-retained implant prostheses (SCP) have been introduced. In Part I of this article, the advan-tages, disadvantages, ideal placement position, impression techniques and occlusal considerations of screw-retained andcement-retained prosthesis are discussed and SCP methods are introduced in Part II.