Nixon R L
Postgraduate Esthetic Continuum for Baylor College of Dentistry, Dallas, Texas, USA.
Pract Periodontics Aesthet Dent. 1996 Apr;8(3):227-35; quiz 237.
When the primary restorative objective is the reinstatement of vital natural tooth color, dark tetracycline-stained teeth still represent the ultimate challenge for ceramic laminate veneers. Masking severe stain with opaquing composite resins is a significant advancement; however, the procedure requires additional chairtime, is technique sensitive (to avoid excessive opacity), and involves removal of additional tooth structure. The learning objective of this article is to describe and compare two different methods for masking tetracycline-stained teeth. The article illustrates the natural tooth color derived from ceramic laminate veneers when bonded to opaque composite resins in the maxillary arch, and compares it to a new ceramic veneer formulation in the mandibular arch, which masks the stain, eliminates the need for subopaquing with composite resins, and resembles the qualities of natural tooth color.
当主要修复目标是恢复天然牙齿的活力颜色时，深色四环素染色牙对陶瓷贴面来说仍是最大挑战。用不透明复合树脂掩盖严重色斑是一项重大进展；然而，该操作需要额外的椅旁时间，对技术敏感（以避免过度不透明），且涉及额外牙体组织的磨除。本文的学习目标是描述和比较两种不同的掩盖四环素染色牙的方法。本文展示了上颌牙弓中与不透明复合树脂粘结时陶瓷贴面呈现的天然牙齿颜色，并将其与下颌牙弓中一种新的陶瓷贴面配方进行比较，该配方可掩盖色斑，无需使用复合树脂进行底层不透明处理，且类似天然牙齿颜色的特质。
