Abstract
Unacceptable occlusal wear has been report- ed for resin-modified glass ionomer cements (RMGICs) placed in permanent molar teeth. Three different surface treatments of a RMGIC were evaluated over periods of up to 2 years for their effects on restoration wear behaviour: (a) sealing with a thin layer of low viscosity unfilled resin (sealed restoration), (b) sealing with a thicker layer of a lightly-filled pit and fissure sealant (sealant restoration), and (c) co-curing the RMGIC with a posterior resin composite (co-cured restoration). After 2 years the cumulative median (quartiles) wear was for (a) 100 (50–150) µm, (b) 25 (0–50) µm, and (c) 25 (25–38) µm. Although method (b) effectively reduced the surface wear of the RMGIC, this treatment required frequent re-sealing, involving 52% of the restorations. Sealing the surface of a RMGIC placed in permanent molars was not a satisfactory method for reducing occlusal wear. However, co-curing the RMGIC with a posterior resin composite reduced occlusal wear significantly (P<0.0001), without the need for frequent re-applications of a pit and fissure sealant to the RMGIC.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 23 May 2000 / Accepted: 26 September 2000
Rights and permissions
About this article
Cite this article
Wu, C., Smales, R. Occlusal wear of a resin-modified glass ionomer cement following three surface treatments. Clinical Oral Investigations 5, 26–30 (2001). https://doi.org/10.1007/s007840000092
Issue Date:
DOI: https://doi.org/10.1007/s007840000092