Visiting Clinical Specialist Teacher, Department of Primary Dental Care, King's College London; Private Practice, Dawood & Tanner, London.
Foundation Dentist, Nelson Road Dental Practice, Gillingham.
Prim Dent J. 2021 Mar;10(1):96-100. doi: 10.1177/2050168420980993.
Fabricating a crown for a tooth that serves as an abutment for an existing removable partial denture (RPD) provides a restorative challenge. Typically, the compromised tooth requiring an extra-coronal restoration is initially restored. It is followed by the construction of a new RPD that accurately fits the restored abutment. An increasingly common scenario is that the existing RPD is deemed clinically acceptable and, therefore, does not require replacing. This results in the clinical dilemma of fabricating a crown for an abutment tooth, while also considering how the contours of this restoration will fit with the RPD's clasps and rests. This can be achieved through the use of various techniques subdivided into indirect, direct and combined indirect-direct. This article describes an indirect-direct technique used in conjunction with the functionally generated path technique to achieve accurately a stable record of the patient's occlusion in the fabrication of a new crown to an existing RPD.
为作为现有可摘局部义齿（RPD）基牙的牙齿制作冠体是一项具有挑战性的修复任务。通常，需要额外牙冠修复的受损牙齿会先进行修复，然后再制作与修复基牙精确匹配的新 RPD。一种越来越常见的情况是，现有的 RPD 在临床上被认为是可以接受的，因此不需要更换。这就产生了一个临床难题，即需要为基牙制作牙冠，同时还要考虑这个修复体的轮廓如何与 RPD 的卡环和支托相适配。这可以通过各种技术来实现，这些技术分为间接法、直接法和间接-直接联合法。本文介绍了一种间接-直接技术，结合功能生成路径技术，在为现有 RPD 上的新牙冠制作中，精确地获得了患者咬合的稳定记录。
