PMID: 16521384Mar 9, 2006Paper

Amalgam matrix for class II and class V preparations connected at the proximal box

The Journal of the American Dental Association
John S Mamoun, Mairaj K Ahmed

Abstract

The authors present a technique for placing and reinforcing an amalgam matrix around combined Class II and Class V preparations that connect at the proximal box. First, the dentist fills the Class V aspect of the preparation, using a temporary resin-based composite wall at the line angle to support amalgam condensation. The dentist then removes the wall and places a matrix band around the tooth, internally reinforcing the band with smaller pieces of matrix band and resin-saturated cotton balls that are light-polymerized and externally reinforcing the band with fast-polymerizing vinyl polysiloxane. Finally, the dentist condenses the line angle amalgam through the proximal box and condenses the proximal box and occlusal aspects. For connected Class II and Class V preparations, this matrix technique permits controlled amalgam condensation, even at the line angle aspect, where it is difficult to condense amalgam without voids or microleakage. This technique allows dentists to provide a stable, inexpensive direct restoration for teeth with connected Class II and Class V preparations, providing an alternative for patients who do not wish to have crowns placed.

Citations

Aug 19, 2007·Operative Dentistry·Richard H White, Marc J Geissberger

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