Abstract

Contemporary implantology emphasizes the importance of achieving an optimal three-dimensional implant position, as prosthetically driven placement is a critical determinant of long-term therapeutic success. Computer-assisted implant surgery facilitates precise implant positioning through preoperative virtual planning using advanced interactive software and the fabrication of static surgical guides. Various drilling protocols are employed during guided osteotomy preparation, including conventional sequential drilling, pilot-guided techniques, and the recently introduced trephination-based approach. Trephination-based guided implant placement represents an innovative, partially guided protocol for osteotomy preparation. This two-step technique involves the initial use of a trephine drill through a sleeveless surgical guide, followed by the application of the final drill from the conventional drilling kit corresponding to the selected implant system. The guided trephination protocol is designed to streamline the osteotomy process, reduce operative duration, and potentially mitigate postoperative morbidity. Therefore, trephination-based guided implant placement could be a valid alternative to conventional guided surgery. Keywords: Guided surgery, Guided trephination, Surgical guide, Trephine drill, Computer-guided implant surgery