Clinical and radiographic outcomes of dynamic navigation-assisted and freehand zygomatic implant surgery: a retrospective study with an average follow-up of 5 years.
Houzuo Guo, Donghao Wei, Tiziano Testori, Ping Di, Xi Jiang, Ye Lin
{"title":"Clinical and radiographic outcomes of dynamic navigation-assisted and freehand zygomatic implant surgery: a retrospective study with an average follow-up of 5 years.","authors":"Houzuo Guo, Donghao Wei, Tiziano Testori, Ping Di, Xi Jiang, Ye Lin","doi":"10.1016/j.jcms.2025.08.017","DOIUrl":null,"url":null,"abstract":"<p><p>Little evidence was available regarding the long-term clinical outcomes of zygomatic implants placed with dynamic navigation assistance compared to freehand zygomatic implants placement. The study aimed to evaluate the clinical and radiographic outcomes of dynamic navigation-assisted and freehand zygomatic implant placement over an average observation period of 5 years. Zygomatic implants were placed in patients with dynamic navigation assistance or by freehand. Immediate provisionalization was completed within 24 h postoperatively. Permanent restorations were placed for all patients 6-12 months after surgery. Subsequently, annual follow-ups were conducted. Implant survival, mechanical and biological complications, and patient-reported outcomes (PROs) were recorded. Meanwhile, the area of bone-to-implant contact (A-BIC), the implant angle, the implant exit section, the distances to the infraorbital margin (DIO), and the distances to the infratemporal fossa (DIT) were measured on postoperative radiographic images. A total of 28 patients with 52 zygomatic implants completed an average follow-up period of 60.29 ± 11.16 months. The implant survival rates were 96.15 % in both groups. The incidence of paresthesia was significantly higher in the freehand group (11.54 %) compared to the dynamic navigation group (3.85 %). Statistically differences were found between the groups in A-BIC, implant angle, and DIO (p = 0.007, p = 0.011, and p = 0.032). In the freehand group, 3 zygomatic implants (11.54 %) exited to the infratemporal fossa, while no implants in the dynamic navigation group did. The PROs of the two groups showed comparable results. Zygomatic implants exhibited promising long-term survival rates. Limited by a retrospective study design, dynamic navigation-assisted surgery offered potential advantages including significantly reduced complications for patients and a greater bone-to-implant contact area.</p>","PeriodicalId":54851,"journal":{"name":"Journal of Cranio-Maxillofacial Surgery","volume":" ","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cranio-Maxillofacial Surgery","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.jcms.2025.08.017","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
引用次数: 0
Abstract
Little evidence was available regarding the long-term clinical outcomes of zygomatic implants placed with dynamic navigation assistance compared to freehand zygomatic implants placement. The study aimed to evaluate the clinical and radiographic outcomes of dynamic navigation-assisted and freehand zygomatic implant placement over an average observation period of 5 years. Zygomatic implants were placed in patients with dynamic navigation assistance or by freehand. Immediate provisionalization was completed within 24 h postoperatively. Permanent restorations were placed for all patients 6-12 months after surgery. Subsequently, annual follow-ups were conducted. Implant survival, mechanical and biological complications, and patient-reported outcomes (PROs) were recorded. Meanwhile, the area of bone-to-implant contact (A-BIC), the implant angle, the implant exit section, the distances to the infraorbital margin (DIO), and the distances to the infratemporal fossa (DIT) were measured on postoperative radiographic images. A total of 28 patients with 52 zygomatic implants completed an average follow-up period of 60.29 ± 11.16 months. The implant survival rates were 96.15 % in both groups. The incidence of paresthesia was significantly higher in the freehand group (11.54 %) compared to the dynamic navigation group (3.85 %). Statistically differences were found between the groups in A-BIC, implant angle, and DIO (p = 0.007, p = 0.011, and p = 0.032). In the freehand group, 3 zygomatic implants (11.54 %) exited to the infratemporal fossa, while no implants in the dynamic navigation group did. The PROs of the two groups showed comparable results. Zygomatic implants exhibited promising long-term survival rates. Limited by a retrospective study design, dynamic navigation-assisted surgery offered potential advantages including significantly reduced complications for patients and a greater bone-to-implant contact area.
期刊介绍:
The Journal of Cranio-Maxillofacial Surgery publishes articles covering all aspects of surgery of the head, face and jaw. Specific topics covered recently have included:
• Distraction osteogenesis
• Synthetic bone substitutes
• Fibroblast growth factors
• Fetal wound healing
• Skull base surgery
• Computer-assisted surgery
• Vascularized bone grafts