Bishbish Zeino Omran, Kim Yoon Jeong, Kan Joseph, Lozada Jaime
Advance Education in Periodontics, Loma Linda University, Redlands, California.
Periodontics department, Loma Linda University, Redlands, California.
J Oral Implantol. 2024 Dec 1;50(6):644-652. doi: 10.1563/aaid-joi-D-24-00026.
This study aimed to compare the angular, platform, and apical deviation of zygoma implants placed with the aid of a dynamic navigation (DN) device compared with the implants placed freehand. Eight cadaver heads were used for the study. Preoperative cone beam computerized tomography (CBCT) scans were made for the heads, and an implant-planning software was used to plan zygoma implants bilaterally in each scanned head. A total of 16 zygoma implants were placed using each surgical technique. Postimplant CBCT scans were merged with the preoperative plan to evaluate and compare the accuracy of the implants using each technique. Angular and linear deviations of the implants were measured and compared. The effect of implant length and position on the deviation was also investigated. The results showed a mean angular deviation of 2.44° ± 1.10° for implants placed using DN compared with 6.63° ± 4.81° for implants placed freehand. The mean apical deviation for implants placed using DN and for implants placed freehand was 2.14 ± 1.02 mm and 3.80 ± 2.49 mm, respectively. Finally, the mean platform deviation for implants placed using DN and for implants placed freehand was 1.66 ± 0.9 mm and 2.81 ± 2.1 mm, respectively. The analysis showed a significant difference between the two techniques in angular and apical deviation (p = .001 and .029, respectively). Zygoma implants placed with a DN device resulted in less apical and angular deviation than implants placed freehand.
本研究旨在比较借助动态导航（DN）设备植入的颧骨种植体与徒手植入的种植体在角度、平台和根尖的偏差。该研究使用了八个尸头。对这些头部进行术前锥形束计算机断层扫描（CBCT），并使用种植体规划软件在每个扫描的头部双侧规划颧骨种植体。每种手术技术共植入16枚颧骨种植体。将植入后的CBCT扫描与术前计划进行融合，以评估和比较每种技术植入种植体的准确性。测量并比较种植体的角度和线性偏差。还研究了种植体长度和位置对偏差的影响。结果显示，使用DN植入的种植体平均角度偏差为2.44°±1.10°，而徒手植入的种植体平均角度偏差为6.63°±4.81°。使用DN植入的种植体和徒手植入的种植体的平均根尖偏差分别为2.14±1.02mm和3.80±2.49mm。最后，使用DN植入的种植体和徒手植入的种植体的平均平台偏差分别为1.66±0.9mm和2.81±2.1mm。分析表明，两种技术在角度和根尖偏差方面存在显著差异（分别为p = 0.001和0.029）。使用DN设备植入的颧骨种植体比徒手植入的种植体产生的根尖和角度偏差更小。
