Keil Christiane, Buckova Michaela, Keil Sheila, Hartmann Louis, Schlupp Wilhelm, Zerjatke Thomas, Bartzela Theodosia, Lauer Günter
Department of Orthodontics, University Hospital Carl Gustav Carus, Technische Universität Dresden, Fetscherstr. 74, Haus 28, D-01307, Dresden, Germany.
Department of Oral Maxillofacial Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Clin Oral Investig. 2025 Jul 9;29(8):378. doi: 10.1007/s00784-025-06444-9.
This in vivo study evaluated the reliability of digital impressions from intraoral scans compared to digital scans of plaster casts of the edentulous maxilla of infants with cleft lip and palate (CLP).
To compare and evaluate the dimensional accuracy of digital and conventional impressions, 52 infants with CLP were selected. Conventional plaster and digital impressions were taken from each patient before surgical closure of the lips and/or palate. Plaster casts were digitized using the intraoral scanner. Eight linear distances were measured and 3D superimpositions were performed. Pearson's correlation, mean difference and root mean square were calculated to compare the two impression methods.
Regardless of the form of CLP, the IOS and the plaster casts correlated very well. The measured linear dimensions of the IOS were greater than those of the digitized plaster casts. Although the linear measurements showed differences of up to 0.89 mm, superimpositions showed that the two impression methods did not differ in a clinically relevant way.
No clinically relevant difference in accuracy was found between IOS and the plaster casts. When investigating the accuracy, 3D analysis should always be preferred to 2D analysis.
This study confirms that IOS is a reliable and clinical valuable alternative for infants with CLP. IOS eliminates risks associated with traditional methods, providing a safer and more efficient workflow for PSIO. Despite minor differences in dimensional accuracy, these variations are clinically negligible and do not impact treatment planning or appliance fabrication.
本体内研究评估了唇腭裂（CLP）婴儿无牙上颌石膏模型的数字扫描与口内扫描数字印模的可靠性。
为比较和评估数字印模与传统印模的尺寸精度，选取了52例唇腭裂婴儿。在唇和/或腭裂手术闭合前，对每位患者进行传统石膏印模和数字印模。使用口内扫描仪对石膏模型进行数字化处理。测量八个线性距离并进行三维叠加。计算Pearson相关性、平均差异和均方根，以比较两种印模方法。
无论唇腭裂的形式如何，口内扫描仪（IOS）和石膏模型的相关性都非常好。IOS测量的线性尺寸大于数字化石膏模型的尺寸。尽管线性测量显示差异高达0.89毫米，但叠加显示两种印模方法在临床相关方面没有差异。
IOS和石膏模型在准确性方面未发现临床相关差异。在研究准确性时，三维分析应始终优于二维分析。
本研究证实，IOS对唇腭裂婴儿来说是一种可靠且具有临床价值的替代方法。IOS消除了与传统方法相关的风险，为小儿口腔颌面外科（PSIO）提供了更安全、更高效的工作流程。尽管在尺寸精度上存在细微差异，但这些差异在临床上可忽略不计，不会影响治疗计划或矫治器制作。
