目的 研究数字化口内扫描印模技术（DIOS）对重度牙周炎（SP）患者口腔种植修复效果及龈沟液炎症因子水平的影响并进行分析。方法 选取医院2022年1月—2025年1月收治的100例SP患者进行研究。以密封信封抽签法分为数字化组（n=50）及常规组（n=50）。两组均开展口腔种植修复，常规组采用常规硅橡胶印模技术，数字化组则采用DIOS。对比两组印模制取时间、印模过程中疼痛程度及种植成功率、修复体满意度、龈沟液炎症因子水平、并发症发生情况。结果 数字化组印模制取时间短于常规组，VAS评分低于常规组，而种植成功率高于常规组（均P＜0.05）。数字化组边缘密合度、咬合关系、邻接关系满意度均高于常规组（均P＜0.05）。修复3个月后两组龈沟液各项炎症因子水平均低于修复前，且数字化组低于常规组（均P＜0.05）。数字化组并发症总发生率低于常规组（P＜0.05）。结论 DIOS可显著提高SP患者口腔种植修复效果，降低龈沟液炎症因子水平，减少并发症的发生。

      Objective To investigate the effects of digital intraoral scanner（DIOS）on the oral implant restoration effect and the levels of inflammatory factors in gingival crevicular fluid in patients with severe periodontitis（SP）．Methods A total of 100 SP patients admitted to the hospital from January 2022 to January 2025 were selected for the study．They were divided into the digital group（n=50）and the conventional group（n=50）by the sealed envelope lottery method．Both groups underwent oral implant restoration．The conventional group used the conventional silicone rubber impression technology，while the digital group underwent DIOS．The time of impression preparation，the degree of pain during the impression process，the success rate of implantation，the satisfaction of restorations，the levels of inflammatory factors in gingival crevicular fluid，and the occurrence of complications were compared between the two groups．Results The impression acquisition time of the digital group was shorter than that of the conventional group，the VAS score was lower than that of the conventional group，while the implantation success rate was higher than that of the conventional group（all P＜0.05）．The marginal fit，occlusal relationship and adjacent relationship in the digital group were all higher than those of the conventional group（all P＜0.05）．Three months after repair，the levels of various inflammatory factors in gingival crevicular fluid in both groups were lower than those at admission，and the digital group was lower than the conventional group（all P＜0.05）．The total incidence of complications in the digital group was lower than that in the conventional group（P＜0.05）．Conclusions DIOS can significantly improve the oral implant restoration effect of SP patients，reduce the levels of inflammatory factors in gingival crevicular fluid，and reduce the occurrence of complications．