Resumen de Cleaning and retreatment protocol for a debonded ceramic restoration

Juan Luis Román Rodríguez, Jorge Alonso Pérez Barquero, August Bruguera Álvarez, Rubén Agustín Panadero, Antonio Fons Font

• Objectives: The aim of this article is to propose a resin cement cleaning protocol for use before recementing a debonded restoration.

  Study Design: Ceramic samples were fabricated from IPS d.sign® and IPS e.max Press® and were treated with hydrofluoric acid etching (HF), or HF+silane (S), or HF+S+adhesive or HF+S+A+resin cement. All samples were placed in a furnace at 650º for one minute in order to attempt to pyrolyze the composite. Each step was examined under scanning electron microscopy (SEM).

  Results: When the cleaning protocol had been performed, it left a clean and retentive surface.

  Conclusions: If the restoration is placed in a furnace at 650º for one minute, the composite cement will burn or pyrolyze and disappear, allowing conventional retreatment of the ceramic before rebonding.