Acurácia da Cirurgia Guiada na Instalação de Implantes Dentários em Alvéolos de Pós-extração: Estudo in vitro

Abstract

The present in vitro study evaluated the accuracy of guided surgery techniques in artificial post-extraction sockets in the anterior maxilla region by comparing the linear deviations of guided surgery with digitally planned surgery. A special CT-scannable mannequin was used for digital planning after being scanned and CT scanned. With the surgical guide, the implant was installed using the guided Epikut® system in the anterior maxilla region, following the installation protocol with the sequence of lance drills and specific reduction spoons that were pre-planned to allow for proper preparation for implant installation. The position of the last drill was scanned in position, as well as the position of the implant after installation via the scan body. Positional deviations were analyzed at three points: Point 01 - the height of the implant's prosthetic crown; Point 02 - the coronal point of the implant; Point 03 - the apical point of the implant. The linear deviation was assessed between the digital plan and the scan body position (MexSB), the digital plan and the position of the final drill (MexFR), and the scan body position and the final drill (SBxFR). It was found that there were no differences between the implant regions in the MexFr (p=0.475) and SBxFr (p=0.983) evaluations. However, in the MexSB analysis, a difference was found between regions 1 and 3 (p=0.024). No statistically significant differences were found in the comparisons between the digital planning and the final actual position, indicating consistency in the accuracy of the technique across various regions of the maxillary arch.