Division of Clinical Education Development and Research, Department of Oral Functions, Kyushu Dental University.
Division of Biomaterials, Department of Oral Functions, Kyushu Dental University.
Dent Mater J. 2022 Jul 30;41(4):520-526. doi: 10.4012/dmj.2021-299. Epub 2022 Mar 10.
This study aimed to develop a novel polymer-infiltrated ceramic network (PICN) composite fabricated via a slip-casting method for a dental training model tooth with machinability compatible to human enamel. A PICN model tooth comprised of silica/acrylic-resin was fabricated via the slip-casting method. A commercial resin-based model tooth and human enamel were used as the control sample. The samples were evaluated based on Vickers hardness, inorganic contents, density, and machinability. The machinability was characterized by a grinding amount obtained from the grinding test using a device equipped with a dental micromotor handpiece with a diamond bur. The properties of the PICN model tooth yielded a silica content of 84.7% and a density of 1.99 g/cm, and its Vickers hardness (312) was comparable with that of enamel (348). The grinding amount was comparable with that of enamel. The castable PICN model tooth was compatible to enamel in terms of hardness and machinability.
本研究旨在开发一种通过流延铸造法制备的新型聚合物渗透陶瓷网络（PICN）复合材料，用于具有与人牙釉质可加工性相匹配的牙科培训模型牙。通过流延铸造法制备了包含硅石/丙烯树脂的 PICN 模型牙。商用树脂基模型牙和人牙釉质被用作对照样品。根据维氏硬度、无机含量、密度和可加工性对样品进行评估。通过使用配备有牙科微型电机手持件和金刚石钻头的设备进行研磨测试，以研磨量来表征可加工性。PICN 模型牙的性能产生了 84.7%的硅石含量和 1.99 g/cm 的密度，其维氏硬度（312）与人牙釉质（348）相当。研磨量与人牙釉质相当。可铸造的 PICN 模型牙在硬度和可加工性方面与人牙釉质相匹配。
