Refractory points and how to approach Eichner Classification C1

Abstract

Refractory cases in removable partial denture (RPD) treatment are defined as “a group of cases in which patient satisfaction cannot be obtained even with normal denture design and fabrication.” The most refractory of these are Eichner classification C1 cases. Eichner classification C1 problems include dealing with remarkably deteriorated remaining teeth, residual ridges, and collapsed occlusion in the pretreatment; the correction of the mandibular position and reconstruction with increased vertical dimension during denture fabrication; and coping with breakage and rotational change of the RPD after delivery.

In this paper, the author reconsiders the problems in the treatment of Eichner classification C1 and outlines the classification and characteristics of each type. Also, the design guidelines for RPDs are proposed, and therapeutic precautions, effective implant support, and how to deal with rotational change of the RPD are explained.