Durán Ojeda Gerardo, Henríquez Gutiérrez Ismael, Tisi José Pablo, Báez Rosales Abelardo
Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, Chile.
Restorative Dentistry Department, University Andrés Bello, Viña del Mar, Chile.
Case Rep Dent. 2017;2017:9408591. doi: 10.1155/2017/9408591. Epub 2017 Nov 26.
Advances in the mechanical properties of composite resins have allowed for their use in posterior teeth. Conventional resins have several problems associated with polymerization shrinkage stress. The development of "bulk-fill" resins has allowed for their use in single increments up to depths of 4 mm, with very low polymerization shrinkage stress. Nevertheless, differences in anatomy and the desire for optimal esthetics present unique difficulties. This article describes a step-by-step technique using flowable bulk-fill resin as a substitute for dentin in a single increment, together with a high-reflective-index resin to restore enamel and decrease clinical time, obtaining anatomically and esthetically acceptable results without detriment to the mechanical properties required to restore the functionality of the posterior teeth.
复合树脂机械性能的进步使其能够用于后牙。传统树脂存在一些与聚合收缩应力相关的问题。“大块充填”树脂的发展使其能够单次增量使用至4毫米深度，且聚合收缩应力极低。然而，牙齿解剖结构的差异以及对最佳美学效果的追求带来了独特的困难。本文介绍了一种逐步技术，即使用可流动的大块充填树脂单次增量替代牙本质，同时使用高折射率树脂修复牙釉质并减少临床时间，在不损害恢复后牙功能所需机械性能的前提下，获得解剖学和美学上均可接受的效果。
