Comparison of artificial tooth position in dentures fabricated by heat curing and additive manufacturing
Comparison of artificial tooth position in dentures fabricated by heat curing and additive manufacturing
复制标题
热固化与增材制造假牙中人造牙位置的比较
DOI：
10.1111/adj.12817
复制
发表时间：
2021
影响因子：
2.1
通讯作者：
Yamashita S
中科院分区：
文献类型：
--
作者：
Tasaka A;Okano H;Odaka K;Matsunaga S;K. Goto T;Abe S;Yamashita S
研究背景本研究的目的是比较增材制造（AM）和热固化制作的义齿中牙齿排列的位移。排好牙后，对蜡制义齿进行三维扫描。使用热固化聚合物树脂制造热固化义齿。根据从蜡义齿数据中减去模型数据获得的数据，用紫外线固化丙烯酸树脂制造AM义齿。通过将热固化和AM义齿叠加在蜡义齿的牙齿区域数据上并测量牙齿排列的位移来验证精度。ResultsIn上颌义齿中，热固化义齿和AM义齿的牙齿位移量分别为-0.08至+0.06 mm和-0.25至+0.06 mm。两种义齿之间观察到显著差异。在下颌义齿中，热固化义齿和AM义齿的牙齿位移量分别为-0.09至+0.07 mm和-0.03至+0.07 mm。两种义齿之间无显着差异。结论AM制作的上颌义齿的人工牙显示出更大的位移相比，热固化。
BackgroundThe purpose of this study was to compare the displacement of tooth arrangement in dentures fabricated by additive manufacturing (AM) and heat curing.MethodsThree‐dimensional (3D) scanning was performed for edentulous jaw models. After the teeth were arranged, 3D scanning for the wax denture was performed. Heat‐cured dentures were fabricated with heat‐cure polymer resin. Based on data obtained by subtracting the model data from wax denture data, AM dentures were fabricated from ultraviolet‐cured acrylic resin. Accuracy was verified by superimposing heat‐cured and AM dentures on the tooth region data from the wax dentures and measuring displacement of the tooth arrangement.ResultsIn the maxillary dentures, the amount of tooth displacement for the heat‐cured dentures and for the AM dentures ranged from −0.08 to +0.06 mm and from −0.25 to +0.06 mm respectively. A significant difference was observed between two dentures. In the mandibular dentures, the amount of tooth displacement for the heat‐cured dentures and for the AM dentures ranged from −0.09 to +0.07 mm and from −0.03 to +0.07 mm respectively. No significant difference was observed between two dentures.ConclusionsThe artificial teeth of the maxillary dentures fabricated by AM showed a greater displacement compared to those by heat curing.