Dental School, University of Catanzaro, Catanzaro, Italy.
Int J Oral Maxillofac Surg. 2012 Jul;41(7):858-62. doi: 10.1016/j.ijom.2012.01.014. Epub 2012 Feb 28.
Direct laser metal forming (DLMF) is a new technique which allows solids with complex geometry to be produced by annealing metal powder microparticles in a focused laser beam, according to a computer-generated three-dimensional (3D) model. For dental implants, the fabrication process involves the laser-induced fusion of titanium microparticles, in order to build, layer by layer, the desired object. Modern computed tomography (CT) acquisition and 3D image conversion, combined with the DLMF process, allows the fabrication of custom-made, root-analogue implants (RAI), perfect copies of the radicular units that need replacing. This report demonstrates the successful clinical use of a custom-made, root-analogue DLMF implant. CT images of the residual non-restorable root of a right maxillary premolar were acquired and modified with specific software into a 3D model. From this model, a custom-made, root-analogue, DLMF implant was fabricated. Immediately after tooth extraction, the root-analogue implant was placed in the extraction socket and restored with a single crown. At the 1-year follow-up examination, the custom-made implant showed almost perfect functional and aesthetic integration. The possibility of fabricating custom-made, root-analogue DLMF implants opens new interesting perspectives for immediate placement of dental implants.
直接激光金属成型（DLMF）是一种新技术，它允许通过在聚焦激光束中退火金属粉末微颗粒来生产具有复杂几何形状的固体，根据计算机生成的三维（3D）模型。对于牙科植入物，制造过程涉及钛微颗粒的激光诱导融合，以便逐层构建所需的物体。现代计算机断层扫描（CT）采集和 3D 图像转换，结合 DLMF 工艺，允许制造定制的、根状类似物植入物（RAI），这些植入物是需要更换的根状单元的完美复制品。本报告展示了一种定制的、根状类似物 DLMF 植入物的成功临床应用。从右侧上颌前磨牙的不可修复的残留根部获取 CT 图像，并使用特定软件对其进行修改，以形成 3D 模型。从该模型中，制造出定制的、根状类似物的 DLMF 植入物。在拔牙后立即将根状类似物植入物放置在拔牙窝中，并通过单个冠修复。在 1 年的随访检查中，定制的植入物显示出几乎完美的功能和美学整合。制造定制的、根状类似物 DLMF 植入物的可能性为即刻植入牙科植入物开辟了新的有趣视角。
