关键词: 粘接固位, 残留粘接剂, 种植体周围疾病, 种植修复, 牙科粘接剂

Abstract: Cement-retained restorations are widely used in prosthodontics due to their excellent aesthetic effects，ease in obtaining passive seating，multi-angle adaptability to implants，and low fabrication costs. However，a major drawback is the residual excess cement（REC），which can lead to bacterial accumulation，formation of biofilm，stimulation of soft and hard tissues and the release of cytotoxic substances，thus aggravating inflammation and causing peri-implant bone resorption，which ultimately compromises implant stability and longevity. This paper is a review of the strategies to reduce REC：abutment replica，especially improved digital replica that precisely control dimensions and ensure marginal fit and bond strength. Optimizing the design of restorations and abutments，as well as improving cementation techniques，can also lower the risk of REC. Traditional cement removal methods have limitations，and the combination of lasers and ultrasound with polyetheretherketone tips has shown good effectiveness in cement removal. At present，most experiments on REC reduction are based on in-vitro models and are insufficient in clinical translation，and there is also a lack of standardized protocols for cement removal. Future research should focus on long-term clinical follow-up to evaluate the effectiveness of different strategies in real-world conditions. Developing low-adhesion cements and wear-resistant instruments，integrating AI-optimized design，and establishing standardized guidelines are also essential. The ultimate goal is to achieve＂precision control of residual cement＂to reduce the risk of peri-implantitis and improve patient outcomes.

Key words: cement-retained, residual excess cement, peri-implant disease, implant restorations, dental cements