PDF(Pubmed)
Abstract：
OBJECTIVE: This non-interventional study investigates variations in the type and frequency of late complications linked to novel zygomatic implant designs, installed adhering to the Zygoma Anatomy-Guided Approach (ZAGA) concept, over an extended follow-up period of at least 3 years.
METHODS: Consecutive patients presenting indications for treatment with ZIs were treated according to ZAGA recommendations. Implants were immediately loaded. The ORIS success criteria for prosthetic offset, stability, sinus changes and soft-tissue status were used to evaluate the outcome.
RESULTS: Twenty patients were treated. Ten patients received two ZIs and regular implants; one received three ZIs plus regular implants, and nine received four ZIs. Fifty-nine ZIs were placed: thirty-six (61%) Straumann ZAGA-Flat implants and twenty-three (39%) Straumann ZAGA-Round implants. Four patients (20%) presented earlier sinus floor discontinuities. Fifteen patients (75%) had prior sinus opacities. Nineteen patients were followed for between 38 and 53 months (mean 46.5 months). One patient dropped out after 20 months. When comparing pre-surgical CBCT with post-surgical CBCT, 84.7% of the sites presented identical or less sinus opacity; nine locations (15%) showed decreased, and another nine increased (15%) post-surgical sinus opacity. Fifty-three ZIs (89.8%) maintained stable soft tissue. Six ZIs had recessions with no signs of infection. ZIs and prosthesis survival rate was 100%.
CONCLUSIONS: The study highlights the effectiveness of ZAGA-based zygomatic implant rehabilitations using Round and Flat designs. Despite patient number constraints, minimal changes in the frequency of late complications from the 1-year follow-up were observed. 100% implant and prosthesis survival rate over a mean follow-up of 46.5 months is reported.
METHODS: Consecutive patients presenting indications for treatment with ZIs were treated according to ZAGA recommendations. Implants were immediately loaded. The ORIS success criteria for prosthetic offset, stability, sinus changes and soft-tissue status were used to evaluate the outcome.
RESULTS: Twenty patients were treated. Ten patients received two ZIs and regular implants; one received three ZIs plus regular implants, and nine received four ZIs. Fifty-nine ZIs were placed: thirty-six (61%) Straumann ZAGA-Flat implants and twenty-three (39%) Straumann ZAGA-Round implants. Four patients (20%) presented earlier sinus floor discontinuities. Fifteen patients (75%) had prior sinus opacities. Nineteen patients were followed for between 38 and 53 months (mean 46.5 months). One patient dropped out after 20 months. When comparing pre-surgical CBCT with post-surgical CBCT, 84.7% of the sites presented identical or less sinus opacity; nine locations (15%) showed decreased, and another nine increased (15%) post-surgical sinus opacity. Fifty-three ZIs (89.8%) maintained stable soft tissue. Six ZIs had recessions with no signs of infection. ZIs and prosthesis survival rate was 100%.
CONCLUSIONS: The study highlights the effectiveness of ZAGA-based zygomatic implant rehabilitations using Round and Flat designs. Despite patient number constraints, minimal changes in the frequency of late complications from the 1-year follow-up were observed. 100% implant and prosthesis survival rate over a mean follow-up of 46.5 months is reported.
摘要：
目的：这项非干预性研究调查了与新型颧骨植入物设计相关的晚期并发症的类型和频率的变化，安装时遵循Zygoma解剖引导方法（ZAGA）的概念，在至少3年的延长随访期内。
方法：连续接受ZIs治疗指征的患者按照ZAGA建议进行治疗。立即装载植入物。假肢偏移的ORIS成功标准，稳定性,使用鼻窦改变和软组织状态来评估结果.
结果：20例患者接受治疗。十名患者接受了两个ZIs和常规植入物；一名患者接受了三个ZIs加上常规植入物，九个人收到了四个ZIs。放置了59个ZI：三十六个（61％）StraumannZAGA-Flat植入物和二十三个（39％）StraumannZAGA-Round植入物。四名患者（20％）出现较早的窦底不连续性。15例患者（75％）先前有鼻窦混浊。19例患者随访38至53个月（平均46.5个月）。一名患者在20个月后退出。当比较术前CBCT和术后CBCT时，84.7%的部位表现出相同或更少的窦性混浊；9个部位（15%）表现出下降，另外9例增加（15%）术后鼻窦混浊。53个ZIs(89.8%)维持软组织稳定。六个ZI出现衰退，没有感染迹象。ZIs和假体存活率为100%。
结论：该研究强调了使用圆形和扁平设计的ZAGA-based骨植入物修复的有效性。尽管病人数量有限，观察到1年随访中晚期并发症发生频率的变化最小.据报道，平均随访46.5个月，植入物和假体的存活率为100％。
方法：连续接受ZIs治疗指征的患者按照ZAGA建议进行治疗。立即装载植入物。假肢偏移的ORIS成功标准，稳定性,使用鼻窦改变和软组织状态来评估结果.
结果：20例患者接受治疗。十名患者接受了两个ZIs和常规植入物；一名患者接受了三个ZIs加上常规植入物，九个人收到了四个ZIs。放置了59个ZI：三十六个（61％）StraumannZAGA-Flat植入物和二十三个（39％）StraumannZAGA-Round植入物。四名患者（20％）出现较早的窦底不连续性。15例患者（75％）先前有鼻窦混浊。19例患者随访38至53个月（平均46.5个月）。一名患者在20个月后退出。当比较术前CBCT和术后CBCT时，84.7%的部位表现出相同或更少的窦性混浊；9个部位（15%）表现出下降，另外9例增加（15%）术后鼻窦混浊。53个ZIs(89.8%)维持软组织稳定。六个ZI出现衰退，没有感染迹象。ZIs和假体存活率为100%。
结论：该研究强调了使用圆形和扁平设计的ZAGA-based骨植入物修复的有效性。尽管病人数量有限，观察到1年随访中晚期并发症发生频率的变化最小.据报道，平均随访46.5个月，植入物和假体的存活率为100％。
