Livaditis Gus J
Baltimore College of Dental Surgery, Dental School, University of Maryland, Baltimore, Md, USA.
J Prosthet Dent. 2002 Sep;88(3):245-51. doi: 10.1067/mpr.2002.128124.
The technique described in this report is an expansion of a previously reported intraoral procedure for directly developing a matrix for the fabrication of composite cores. The expanded method allows a matrix to be created indirectly after the involved teeth are trimmed or restored on a cast into slightly oversized crown preparations before the treatment visit. The cast may serve for both the matrix and the interim fixed restoration, enabling fabrication by the dental laboratory. A semirigid (occlusal registration) elastomeric material is used to form the matrix. The matrix is used to apply the composite and shape the cores after the abutment teeth have been prepared, pins or posts have been placed, and adhesive procedures have been implemented. The elastomeric matrix can be modified for use as the impression matrix. The described technique allows the simultaneous formation of multiple composite cores. An alternative method in which light-polymerized core composite is used with a vacuum-formed, dual-laminate transparent matrix is described and compared with the semirigid elastomeric matrix.
本报告中描述的技术是对先前报道的一种口内程序的扩展，该程序用于直接制作复合桩核修复体的成型片。扩展后的方法允许在治疗前将患牙在模型上修整或修复成略大于正常尺寸的全冠预备体后，间接制作成型片。该模型可用于成型片和临时固定修复体，从而由牙科实验室进行制作。使用一种半刚性（咬合记录）弹性材料来形成成型片。在基牙预备、放置桩钉或桩以及完成粘接程序后，使用成型片来涂抹复合树脂并塑造桩核。弹性成型片可经修改用作印模成型片。所描述的技术允许同时制作多个复合桩核。还描述了一种替代方法，即将光固化桩核复合树脂与真空成型的双层透明成型片一起使用，并与半刚性弹性成型片进行比较。
