Riad Deglow Elena, Lazo Torres Nayra Zurima, Gutiérrez Muñoz David, Bufalá Pérez María, Galparsoro Catalán Agustín, Zubizarreta-Macho Álvaro, Abella Sans Francesc, Hernández Montero Sofía
Department of Implant Surgery, Faculty of Health Sciences, Alfonso X el Sabio University, 28691 Madrid, Spain.
Department of Orthodontics, Faculty of Medicine and Dentistry, University of Salamanca, 37008 Salamanca, Spain.
J Clin Med. 2022 Feb 15;11(4):1012. doi: 10.3390/jcm11041012.
The aim of this study was to analyse and compare the position of single-rooted autotransplanted teeth using computer-aided SNT drilling and conventional freehand (FT) drilling, by comparing the planned and performed position at the coronal, apical and angular level.
Forty single-root upper teeth were selected and distributed into the following study groups: A. Autotransplanted tooth using the computer-aided static navigation technique (SNT) ( = 20) and B. Autotransplanted tooth using the conventional free-hand technique (FT) ( = 20). Afterwards, the teeth were embedded into two experimental models and 10 single-root upper teeth were randomly autotransplanted in each experimental model. The experimental models were submitted to a preoperative cone-beam computed tomography (CBCT) scan and a digital impression by a 3D intraoral scan, in addition to a postoperative CBCT scan, after the autotransplantation. Datasets from postoperative CBCT scans of the two study groups were uploaded to the 3D implant planning software, aligned with the autotransplantation planning, and the coronal, apical and angular deviations were measured. The results were analysed using Student's -test and Mann-Whitney non-parametric statistical analysis.
Coronal ( = 0.079) and angular ( = 0.208) statistical comparisons did not present statistically significant differences; however, statistically significant differences between the apical deviation of the SNT and FT study groups ( = 0.038) were also observed.
The computer-aided static navigation technique does not provide higher accuracy in the positioning of single-root autotransplanted teeth compared to the conventional free-hand technique.
本研究的目的是通过比较单根自体移植牙在冠部、根尖部和角度水平的计划位置与实际位置，分析并比较使用计算机辅助静态导航技术（SNT）钻孔和传统徒手（FT）钻孔时单根自体移植牙的位置。
选择40颗单根上颌牙，分为以下研究组：A. 使用计算机辅助静态导航技术（SNT）的自体移植牙（n = 20）和B. 使用传统徒手技术（FT）的自体移植牙（n = 20）。之后，将牙齿嵌入两个实验模型，每个实验模型中随机自体移植10颗单根上颌牙。实验模型在术前进行锥形束计算机断层扫描（CBCT）和三维口腔内扫描获取数字印模，自体移植后进行术后CBCT扫描。将两个研究组术后CBCT扫描的数据集上传至三维种植计划软件，与自体移植计划对齐，测量冠部、根尖部和角度偏差。结果采用学生t检验和曼-惠特尼非参数统计分析。
冠部（P = 0.079）和角度（P = 0.208）的统计比较未呈现统计学显著差异；然而，也观察到SNT和FT研究组根尖偏差之间存在统计学显著差异（P = 0.038）。
与传统徒手技术相比，计算机辅助静态导航技术在单根自体移植牙的定位中并未提供更高的准确性。
