Chairside polishing of heat-cured acrylic resin: An SEM and EDA study

E F O'Donnell, D R Radford, G F Sinclair, R K F Clark

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Purpose: This study investigated the surfaces produced on two commonly used heat-cured acrylic resins by two chairside polishing systems compared to conventional lathe polishing. It used energy dispersive analysis (EDA) and scanning electron microscopy (SEM) to investigate the abrasive materials bonded in the silicone points that are marketed for chairside polishing of acrylic resin. Materials and Methods: Using the three polishing systems (conventional as control, Shofu acrylic polishing system [AcryPoint], and Kenda Queen silicone polisher), three operators polished specimens using a defined protocol. Specimens were subjected to SEM and confocal microscopy. EDA was undertaken on the silicone polishing points. Results: Conventional polishing produced the superior surface, followed by the surfaces produced by the Shofu system and then Kenda Queen. However, both chairside polishing systems produced smoother surfaces on acrylic resin than the surfaces produced by either steel or tungsten carbide burs. Both the Shofu acrylic polishing system and Kenda Queen silicone polisher contain beads of cerium, which is widely used in industry for polishing of glass. Conclusion: Silicone polishing points marketed for polishing of acrylic resin could be used to produce smooth surfaces that have been adjusted with burs where there is no access to a laboratory lathe.
Original languageEnglish
Pages (from-to)233 - 238
Number of pages6
JournalInternational Journal of Prosthodontics
Volume16
Issue number3
Publication statusPublished - May 2003

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