刃状螺纹种植体在单颗前磨牙区即刻负重的临床研究  

Immediate loading of blade-threaded implants in premolar sites

作　　者：梁亮 鄢雷 高湛 施斌 Liang Liang;Yan Lei;Gao Zhan;Shi Bin(Department of Implantology,Stomatological Hospital of Dongguan,Dongguan 523000,China)

机构地区：[1]东莞健力口腔医院种植科,东莞523000

出　　处：《中华口腔医学研究杂志(电子版)》2025年第1期49-55,共7页Chinese Journal of Stomatological Research(Electronic Edition)

基　　金：东莞市社会发展科技项目(20231800903642)。

摘　　要：目的研究刃状螺纹种植体在单颗前磨牙区即刻负重与延期负重的临床效果。方法本研究设计为前瞻性随机对照研究,选取了2023年3—8月间30例单颗前磨牙缺失的患者,利用软件随机数分组法,分别将15例患者纳入到即刻负重组与延期负重组。即刻负重组以50 N·cm以上的扭矩植入种植体,临时修复体在种植体植入后5 d内安装。延期负重组则在种植体植入3个月后安装正式修复体。共计植入30枚种植体,评价指标为种植成功率、种植体稳定系数、边缘骨吸收、种植体周软组织指标及并发症,在种植体植入前、3个月后及1年后记录以上指标并使用两样本的t检验进行组间数据分析。结果在1年的随访期内,无患者退出研究,无种植体失败。即刻负重组的平均种植体稳定系数值为(83.4±1.6),延期负重组为(82.7±2.1),差异无统计学意义(t=1.551,P=0.143)。即刻负重组的边缘骨吸收为(0.67±0.39)mm,略高于延期负重组(0.42±0.38)mm,差异无统计学意义(t=1.760,P=0.089)。4例延期负重组的患者在1年后出现邻接丧失,其余种植体周软组织指标与并发症结果两组相似。即刻负重组与延期负重组的牙龈指数分别为(0.35±0.32)和(0.33±0.49),差异无统计学意义(t=1.228,P=0.268);即刻负重组与延期负重组的菌斑指数分别为(0.42±0.30)和(0.33±0.35),差异无统计学意义(t=1.463,P=0.154);即刻负重组与延期负重组的探诊深度分别为(2.49±0.64)和(2.43±0.53)mm,差异无统计学意义(t=1.362,P=0.183)。结论刃状螺纹种植体在单颗前磨牙即刻负重中的临床结果理想,与延期负重结果相似。数字化技术及刃状螺纹种植体的应用有利于简化即刻负重流程。Objective To compare the clinical outcomes of immediate and conventional loaded blade-threaded implants placed in premolar sites.Methods This study was designed as a prospective randomized clinical trial.A total of 30 patients with premolars missing and treated with 30 blade-threaded implants from March to August in 2023 were divided into immediate or conventional loading group randomizedly.The immediate loading group was restored provisionally within five days after implant placement with an insertion torque more than 50 N·cm,and the conventional loading group was restored three months later.The implant success rate,implant stability quotien,marginal bone loss,peri-implant soft tissue and complications were recorded and evaluated at three different timepoints,i.e.,implant placement,three months later and one year later.Two-sample t-test was used to analyze the inter-group data.Results During the one-year follow up period,no patient dropped out and no implant failed.The mean implant stability quotien(ISQ)values were(83.4±1.6)and(82.7±2.1)for immediate and conventional loading group,repectively,and there was no significant difference(t=1.551,P=0.143).The mean marginal bone loss was(0.67±0.39)mm in the immediate loading group,which was slightly higher than that of the conventional loading group(0.42±0.38)mm without statistical difference(t=1.760,P=0.089).Peri-implant soft tissue and complications were similar except for the proximal contact loss between the two groups.Gigival index of the immediate and conventional group was(0.35±0.32)and(0.33±0.49),respectively,without significant difference(t=1.228,P=0.268).Plaque index of the two groups was(0.42±0.30)and(0.33±0.35),without significant difference(t=1.463,P=0.154).Probing depth of the two groups was(2.49±0.64)and(2.43±0.53)mm,without significant difference(t=1.362,P=0.183).Proximal contact loss was observed in four patients in the conventional loading group.Conclusions Within the limitations of this study,the present data seemed to support the hypothesi

关 键 词：牙种植体 即刻负重 延期负重 单颗后牙 

分 类 号：R783.6[医药卫生—口腔医学]