A novel technique for the direct fabrication of fixed interim restorations

https://doi.org/10.1016/S0022-3913(13)60044-XGet rights and content

This article describes an alternative technique for the fabrication of interim restorations. A thermoplastic, vacuum-formed template and translucent vinyl polysiloxane material are combined in the waxed diagnostic cast to fabricate a matrix in which the interim material can be placed. With this matrix, a variety of materials, such as dual-polymerized or light-polymerized resins, can be used in a predictable way. The major advantage of this technique is that it allows for the fabrication of accurate restorations with excellent reproduction of surface anatomy and for alterations of the tooth shape with light-polymerized materials.

Section snippets

Fabricating the matrix

  • 1.

    If the current shape of the teeth to be prepared is acceptable, make an impression including at least 1 adjacent tooth on each side and fabricate a cast with a Type IV dental stone (Resin Rock; Whip Mix, Louisville, Ky). In this situation, base the fabrication of the interim restoration on the existing partial fixed dental prosthesis in the maxillary left posterior region (Fig. 1). Alternatively, if new information must be transferred from the diagnostic waxing, moisten the diagnostic cast and

Discussion

This article describes a direct technique for fabricating interim restorations. The transparency of the matrix used enables better control of the restoration fabrication process and allows for the use of various interim materials.

The temperature rise caused by some restorative materials such as poly(methyl methacrylate) can be countered by using a matrix that absorbs the increased temperature. The thickness of the presented matrix increases its heat capacity compared to a vacuum-formed

Summary

A new technique for the fabrication of interim restorations with a translucent matrix is described. A thermoplastic, vacuum-formed template and a translucent vinyl polysiloxane material are combined in this technique, which allows the use of a wide variety of interim materials, including light-polymerized resins. The technique leads to the fabrication of accurate, durable, and esthetic interim restorations.

View full text
Copyright © 2013 The Editorial Council of the Journal of Prosthetic Dentistry. Published by Mosby, Inc. All rights reserved.