Kim Yu-Jin, Kim Jungeun, Lee Jae-Rim, Kim Hee-Sun, Sim Hye-Young, Lee Ho, Han Yoon-Sic
Department of Periodontology, Seoul Metropolitan Government, Seoul National University Boramae Medical Center, Seoul, South Korea.
Integrated Innovation Institute, Carnegie Mellon University, Pittsburgh, PA, USA.
J Dent Sci. 2024 Oct;19(4):2256-2261. doi: 10.1016/j.jds.2024.02.024. Epub 2024 Mar 1.
BACKGROUND/PURPOSE: In clinical settings, there may be a need for a guide device that is simple and enhances the positioning accuracy of prosthetics. This study aimed to compare the accuracy of implant positioning using two methods: implant placement with a simple guide device (SGD) and freehand surgery.
A total of 103 patients were randomly assigned to the control or study group. In the control group, implant placement was performed using the freehand technique. In the study group, implant placement was conducted with an SGD. Implant positioning accuracy was assessed by measuring how much the central position, fixture angulation, and fixture position differed from the ideal implant position based on periapical radiographs and cone-beam computed tomography images. In patients with double implants, parallelism between the two fixtures was also measured.
There were 124 subjects, with 84 having single implants (42 in the control group and 42 in the study group) and 40 having double implants (20 in the control group and 20 in the study group). Utilization of the SGD for both single and double implant placement improved the accuracy of the central position, fixture angulation, and fixture position ( < 0.05). Additionally, in double implantation cases, it significantly enhanced parallelism between the two fixtures ( < 0.001).
These findings suggest that use of an SGD leads to more accurate implant placement compared with freehand surgery taking into account the final prosthetic restoration.
背景/目的：在临床环境中，可能需要一种简单且能提高假体定位准确性的导向装置。本研究旨在比较两种方法植入种植体的准确性：使用简单导向装置（SGD）植入种植体和徒手手术。
总共103例患者被随机分配至对照组或研究组。对照组采用徒手技术植入种植体。研究组使用SGD植入种植体。通过基于根尖片和锥形束计算机断层扫描图像测量中心位置、种植体角度和种植体位置与理想种植体位置的差异，评估种植体定位准确性。对于植入两颗种植体的患者，还测量了两颗种植体之间的平行度。
共有124名受试者，其中84人植入单颗种植体（对照组42人，研究组42人），40人植入两颗种植体（对照组20人，研究组20人）。在单颗和两颗种植体植入中使用SGD均提高了中心位置、种植体角度和种植体位置的准确性（P<0.05）。此外，在植入两颗种植体的情况下，它显著提高了两颗种植体之间的平行度（P<0.001）。
这些研究结果表明，与考虑最终修复体的徒手手术相比，使用SGD能实现更准确的种植体植入。
