Abstract：
For patients with existing implants in need of additional implant placement, the use of the existing implants for guide fixation seems to be a logical alternative. Current options for the fabrication of surgical guides involve creating surgical guides that are mucosa-borne and/or retained by fixation pins. Since these existing techniques involve inherent inaccuracies, the fabrication of surgical guides that are screw-retained at the implant- or abutment-level would eliminate the introduction of those same fundamental inaccuracies. The purpose of the present technical report is to illustrate a step-by-step digitally planned guided implant placement protocol for terminal dentition patients with salvageable existing implants requiring full-arch implant rehabilitation. The advantages of this protocol include enhancing the accuracy of guided implant placement with screw-retention versus the traditional mucosa- or fixation pin support. Thus, this simplifies the transition from failing teeth to implants by ensuring that fixed provisionalization serves both functional and esthetic requirements. This protocol can also predictably reduce chairside time and adjustments at the surgical implant placement appointment.
摘要：
对于现有植入物需要额外植入的患者，使用现有的植入物进行引导固定似乎是一个合乎逻辑的选择。用于制造手术引导件的当前选择涉及创建粘膜承载和/或由固定销保持的手术引导件。由于这些现有技术涉及固有的不准确性，制造螺钉固定在植入或基台水平的手术导向器将消除这些基本错误的引入。本技术报告的目的是说明针对具有可挽救的现有植入物的需要全弓植入物康复的末端牙列患者的逐步数字计划的引导植入物放置协议。与传统的粘膜或固定销支撑相比，该方案的优点包括提高螺钉固位的引导植入物放置的准确性。因此，通过确保固定的预备满足功能和美学要求，这简化了从失败的牙齿到植入物的过渡。该方案还可以预见地减少在手术植入物放置预约时的椅子旁时间和调整。
