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．

目的 研究牙周牙髓联合治疗对重度牙周炎的手术效果,以及手术预后评价。方法 研究对象选取我院2016年12月—2018年3月间收治的重度牙周炎患者60例(患齿共60颗),将其随机分为观察组(30例)和对照组(30例),分别接受牙周牙髓联合治疗和单纯牙周治疗。比较两组患者的治疗总有效率以及复发率和患者的美观满意度,同时比较治疗前后的各项临床指标水平。结果 观察组患者的治疗总有效率(93.33%)以及复发率(3.33%)均与对照组[(80.00%)、(10.00%)]无差异[(P=0.13,χ²=2.31)、(P=0.30,χ²=1.07)],美观满意度(96.67%)高于对照组(73.33%)(P=0.01,χ²=6.41);治疗一个月后,观察组患者的PD、AL、松动度水平与对照组无差异(P>0.05),龈沟出血指数(SBI)低于对照组(P<0.05);治疗三个月后,观察组的AL、SBI、松动度均低于对照组(P<0.05),PD水平与对照组无差异(P>0.05)。结论 牙周牙髓联合治疗可有效治疗重度牙周炎患者,改善患者临床症状,提高患者美观满意度,值得临床借鉴。

Objective To study the surgical effect of periodontal pulp combined therapy on severe periodontitis and the prognosis of surgery. Methods The study subjects selected 60 patients with severe periodontitis admitted to our hospital from December 2016 to March 2018 (60 teeth), and were randomly divided into observation group (30 cases) and control group (30 cases). The observation group received periodontal treatment with periodontal pulp and the control group received periodontal treatment alone. The total effective rate of treatment and the recurrence rate and the aesthetic satisfaction of the patients were compared between the two groups, and the clinical indicators before and after treatment were compared. Results The total effective rate (93.33%) and recurrence rate (3.33%) of the observation group were not different from the control group [(80.00%), (10.00%)] [(P=0.13, χ²=2.31), (P =0.30, χ²=1.07)], aesthetic satisfaction (96.67%) was higher than the control group (73.33) (P=0.01,χ2=6.41); after one month of treatment, in the PD, AL, looseness of the observation group, there was no difference between the level and the control group (P>0.05), and the sulcus bleeding index (SBI) was lower than that of the control group (P<0.05). After three months of treatment, the AL, SBI and looseness of the observation group were lower than those of the control group (P<0.05). P<0.05), the PD level was not different from the control groups (P>0.05). Conclusion The combined of periodontal and endodontic treatment may be effective to patients with severe periodontitis, improve the clinical symptoms of patients, and increase the aesthetic satisfaction of patients, which is worthy of clinical promotion.