Clinical resurfacing of feldspar and leucite glass ceramics using dental handpieces and burs

Abstract

This chapter summarises the resurfacing characteristics and material removal mechanisms of feldspar and leucite glass ceramics in simulated clinical resurfacing procedure by using air-turbine dental handpieces. It begins with description of feldspar and leucite glass ceramics as restorative and prosthetic materials in dentistry. A description of condition monitoring of simulated clinical resurfacing processes is provided, including in-process measurement of resurfacing forces, force ratios, torques and specific energy using force sensors and a highspeed data acquisition system. Information on surface roughness and surface morphology is also detailed. In particular, this chapter presents the studies on surface and subsurface damage mechanism using both finite element analysis (FEA) and experimental measurement. At the end of the chapter, potential future developments of dental ceramic resurfacing are given.