Department of Prosthodontics, SGT University, Gurugram, Haryana, India.
Niger Postgrad Med J. 2020 Oct-Dec;27(4):391-393. doi: 10.4103/npmj.npmj_184_20.
Lone standing abutments or pier abutments have usually been restored with a conventional fixed partial denture (FPD) using a rigid connector between the pontics and the retainers. However, such fixed and rigid restorations have been associated with a higher rate of debonding, microleakage, caries, etc., The aim of the modern day prosthodontics is the preservation of what remains as given by M.M Devan. As a result, a non rigid connector (NRC) may be the connector of choice in situations of pier abutment. A NRC acts as a stress breaker so that the anterior and posterior segments can move independent of each other. This case report presents a simple method of rehabilitating a patient with a pier abutment in the upper right posterior region of the mouth. Rehabilitation was done by FPD with an inverted key-keyway type NRC. Follow up was done up to 11 months.
孤立基牙或桥基牙通常通过在桥体和固位体之间使用刚性连接体来修复常规的固定局部义齿(FPD)。然而,这种固定且刚性的修复体与更高的脱胶率、微渗漏、龋齿等相关。现代修复学的目标是按照 M.M Devan 的建议保留尽可能多的天然牙。因此,在桥基牙的情况下,非刚性连接体(NRC)可能是首选的连接体。NRC 起到了缓解压力的作用,使得前、后牙段可以独立运动。本病例报告介绍了一种在上颌右侧后牙区桥基牙患者中进行修复的简单方法。通过采用倒钥匙-钥匙槽型 NRC 的 FPD 进行修复。随访时间长达 11 个月。