University of Lille, 42 rue Paul Duez, 59000 Lille, France; Maxillofacial surgery and stomatology department of Lille Univeristy Hospital, hôpital Roger Salengro, rue Emile-Laine, 59037 Lille cedex, France; Maxillofacial surgery and stomatology department, clinique Saint-Luc, CHU de Bruxelles, avenue Hippocrate 10, 1200 Woluwe-Saint-Lambert, Belgium.
University of Lille, 42 rue Paul Duez, 59000 Lille, France; Maxillofacial surgery and stomatology department of Lille Univeristy Hospital, hôpital Roger Salengro, rue Emile-Laine, 59037 Lille cedex, France.
J Stomatol Oral Maxillofac Surg. 2020 Jun;121(3):219-225. doi: 10.1016/j.jormas.2019.10.011. Epub 2019 Oct 30.
3D printed models are often very similar in shape and can be inadvertently switched if the related patient is not identified correctly. Here, we present a free and simple method to imprint letters and numbers in a 3D model. CT scan data were used to create an STL file of a patient's mandible. We then used Blender software to modify it with numbers and letters. We chose to imprint a series of four letters and numbers on our 3D models. We chose representative letters and numbers of the Latin alphabet. Six models were printed with an Up plus 2 - easy 120 3D printer with different character sizes and shape to evaluate the readability. All models were printed without any failures. Regarding readability, 2 mistakes were made among ten readers. The favourite extrusion depth was 3 mm, and the largest model was preferred. Identification can be done at different times and by different means, but identifying the 3D model during its creation is safer. Moreover these identified 3D models could be saved in the digital patient medical file. The identification location should take into consideration the future indication of the 3D printed medical model. We recommend that 3D identification should be done using at least 7.5mm high, with a depth of 3mm. Our method allows easy, fast and free 3D text. This 3D text identification printing method may be a first step towards the legal use of 3D printed models made within the hospital.
3D 打印模型的形状通常非常相似，如果相关患者没有被正确识别，可能会被无意中混淆。在这里，我们提出了一种免费且简单的方法，可以在 3D 模型上打印字母和数字。我们使用 CT 扫描数据创建了患者下颌骨的 STL 文件。然后，我们使用 Blender 软件对其进行修改，添加了数字和字母。我们选择在我们的 3D 模型上打印一系列四个字母和数字。我们选择了拉丁字母中有代表性的字母和数字。使用 Up plus 2 - easy 120 3D 打印机打印了 6 个具有不同字符大小和形状的模型，以评估可读性。所有模型均成功打印，无任何失败。在可读性方面，在 10 名读者中出现了 2 次错误。读者最喜欢的挤出深度为 3mm，最大的模型是首选。可以在不同时间和通过不同方式进行识别，但在创建 3D 模型时进行识别更安全。此外，这些经过识别的 3D 模型可以保存在数字患者医疗档案中。识别位置应考虑到未来对 3D 打印医疗模型的指示。我们建议使用至少 7.5mm 高、3mm 深的 3D 标识。我们的方法允许轻松、快速和免费地进行 3D 文本打印。这种 3D 文本标识打印方法可能是医院内使用 3D 打印模型的合法使用的第一步。
