Molinero-Mourelle Pedro, Canals Silvia, Gómez-Polo Miguel, Solá-Ruiz Ma Fernanda, Del Río Highsmith Jaime, Viñuela Alicia Celemín
Int J Prosthodont. 2018 Jul/Aug;31(4):349-350. doi: 10.11607/ijp.5709.
To assess the marginal fit of provisional polylactic acid (PLA) crowns obtained via three-dimensional (3D) printing using a profile projector.
A stone cast was scanned, and 15 provisional dental crowns were designed and printed in PLA using a 0.2-mm nozzle and 135-degree build angle. The marginal fit was measured at six points on each crown using a profile projector.
Within the limitations of this study, the marginal fit of PLA provisional restorations was clinically acceptable, and the results were comparable to those observed with polymethyl methacrylate provisional restorations.
使用轮廓投影仪评估通过三维（3D）打印获得的临时聚乳酸（PLA）牙冠的边缘适合性。
对石膏模型进行扫描，使用0.2毫米喷嘴和135度堆积角度，设计并打印15个PLA临时牙冠。使用轮廓投影仪在每个牙冠的六个点测量边缘适合性。
在本研究的局限性内，PLA临时修复体的边缘适合性在临床上是可接受的，结果与聚甲基丙烯酸甲酯临时修复体观察到的结果相当。
