Belvedere P C
Swiss Dent. 1990 Jun;11(6):7-18.
This paper intends to introduce a technique for a one sitting fixed resin bridge with excellent aesthetics and longevity. Techniques using denture teeth or a crown portion of the patient's own teeth have already been presented by many authors. But they all have been unpredictable and their longevity could not be assured. The addition of resin fibre filament to create a flexible reinforcement at the pontic-abutment interface gives added strength to the acid etch bond between pontic and abutment. Reinforcing systems such as metal wires, woven screen, metal bars with retentive holes, glass fibres, silk and resin fibres have been used with varying results. The original composite reinforced bridge using resin fibres was done by the author with Kevlar 49 in February of 1981, replacing both upper central incisors using only the lateral incisors on a 22 year-old female. This four-unit-bridge is still in function (end of 1989) and has never been replaced or repaired. Since then improvements have been made and the following technique has evolved. 360 fibre reinforced "Belvedere bridges" have been placed to date with a success rate of 98%. One of the improvements is the use of another fibre, which has extremely high tensile strength: it is a polyethylene fibre, colourless and six times stronger than steel.
本文旨在介绍一种具有出色美观性和耐用性的一次性固定树脂桥技术。许多作者已经介绍了使用义齿牙或患者自身牙齿冠部的技术。但这些技术都不可预测，其耐用性也无法保证。在桥体与基牙界面添加树脂纤维丝以形成柔性增强结构，可增强桥体与基牙之间酸蚀粘结的强度。诸如金属丝、编织网、带固位孔的金属条、玻璃纤维、丝线和树脂纤维等增强系统的使用效果各不相同。作者于1981年2月用凯夫拉尔49纤维完成了首例使用树脂纤维增强的复合桥，为一名22岁女性仅利用侧切牙替换了两颗上颌中切牙。这座四单位桥至今（1989年底）仍在使用，从未被替换或修复过。从那时起，技术不断改进，发展出了以下技术。迄今为止，已成功放置了360颗纤维增强的“观景桥”，成功率为98%。其中一项改进是使用了另一种纤维，其具有极高的拉伸强度：它是一种聚乙烯纤维，无色且强度比钢高六倍。
