Article: Volume 43 Number 10 Page 989 - December 2016

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  Dent Update 2016; 43: 989-989

Technique Tips:  Technique Tips – Repairing Fractured Metal-Ceramic Restorations using Tribochemical Impregnation

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Abstract: The fracture of the ceramic from a metal-ceramic restoration may often lead to an emergency attendance, because of compromised appearance or because the fractured restoration had rough margins, which were traumatizing the soft tissues. Causes of such fractures include, trauma (occlusal or physical), unsupported ceramic (which could be extrapolated to poor laboratory design), and/or insufficient rigidity in the metal substructure of the crown. It could be expected that the latter would be a cause of an early fracture, while the other causes could occur at any time in the life of the crown. Previous methods of attempting repair of such restorations used so-called chemically-active resins, an example of which was 4-methacryloxyethyl trimellitate anhydride (4-META).1

Author notes: FJT Burke, DDS, MSc, MDS, MGDS, FDS (RCS Edin), FDS RCS (Eng), FFGDP (UK), FADM, Primary Dental Care Research Group, University of Birmingham School of Dentistry, 5 Mill Pool Way, Pebble Mill, Birmingham B5 7EG, UK.